^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) International Business Machines Corp., 2000-2004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * jfs_imap.c: inode allocation map manager
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Serialization:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Each AG has a simple lock which is used to control the serialization of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * the AG level lists. This lock should be taken first whenever an AG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * level list will be modified or accessed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * Each IAG is locked by obtaining the buffer for the IAG page.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * There is also a inode lock for the inode map inode. A read lock needs to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * be taken whenever an IAG is read from the map or the global level
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * information is read. A write lock needs to be taken whenever the global
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * level information is modified or an atomic operation needs to be used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * If more than one IAG is read at one time, the read lock may not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * be given up until all of the IAG's are read. Otherwise, a deadlock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * may occur when trying to obtain the read lock while another thread
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * holding the read lock is waiting on the IAG already being held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * The control page of the inode map is read into memory by diMount().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * Thereafter it should only be modified in memory and then it will be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * written out when the filesystem is unmounted by diUnmount().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/buffer_head.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/pagemap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/quotaops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include "jfs_incore.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include "jfs_inode.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include "jfs_filsys.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include "jfs_dinode.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include "jfs_dmap.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include "jfs_imap.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include "jfs_metapage.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include "jfs_superblock.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include "jfs_debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * imap locks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) /* iag free list lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define IAGFREE_LOCK_INIT(imap) mutex_init(&imap->im_freelock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define IAGFREE_LOCK(imap) mutex_lock(&imap->im_freelock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define IAGFREE_UNLOCK(imap) mutex_unlock(&imap->im_freelock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* per ag iag list locks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define AG_LOCK_INIT(imap,index) mutex_init(&(imap->im_aglock[index]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define AG_LOCK(imap,agno) mutex_lock(&imap->im_aglock[agno])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define AG_UNLOCK(imap,agno) mutex_unlock(&imap->im_aglock[agno])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * forward references
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static int diAllocAG(struct inomap *, int, bool, struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static int diAllocAny(struct inomap *, int, bool, struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static int diAllocBit(struct inomap *, struct iag *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static int diAllocExt(struct inomap *, int, struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static int diAllocIno(struct inomap *, int, struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static int diFindFree(u32, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static int diNewExt(struct inomap *, struct iag *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static int diNewIAG(struct inomap *, int *, int, struct metapage **);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) static void duplicateIXtree(struct super_block *, s64, int, s64 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) static int diIAGRead(struct inomap * imap, int, struct metapage **);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) static int copy_from_dinode(struct dinode *, struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static void copy_to_dinode(struct dinode *, struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * NAME: diMount()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * FUNCTION: initialize the incore inode map control structures for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * a fileset or aggregate init time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * the inode map's control structure (dinomap) is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * brought in from disk and placed in virtual memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * ipimap - pointer to inode map inode for the aggregate or fileset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * 0 - success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * -ENOMEM - insufficient free virtual memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * -EIO - i/o error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) int diMount(struct inode *ipimap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct inomap *imap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct metapage *mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) int index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct dinomap_disk *dinom_le;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * allocate/initialize the in-memory inode map control structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) /* allocate the in-memory inode map control structure. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) imap = kmalloc(sizeof(struct inomap), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (imap == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) jfs_err("diMount: kmalloc returned NULL!");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) /* read the on-disk inode map control structure. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) mp = read_metapage(ipimap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) IMAPBLKNO << JFS_SBI(ipimap->i_sb)->l2nbperpage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) PSIZE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (mp == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) kfree(imap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) /* copy the on-disk version to the in-memory version. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) dinom_le = (struct dinomap_disk *) mp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) imap->im_freeiag = le32_to_cpu(dinom_le->in_freeiag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) imap->im_nextiag = le32_to_cpu(dinom_le->in_nextiag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) atomic_set(&imap->im_numinos, le32_to_cpu(dinom_le->in_numinos));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) atomic_set(&imap->im_numfree, le32_to_cpu(dinom_le->in_numfree));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) imap->im_nbperiext = le32_to_cpu(dinom_le->in_nbperiext);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) imap->im_l2nbperiext = le32_to_cpu(dinom_le->in_l2nbperiext);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) for (index = 0; index < MAXAG; index++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) imap->im_agctl[index].inofree =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) le32_to_cpu(dinom_le->in_agctl[index].inofree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) imap->im_agctl[index].extfree =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) le32_to_cpu(dinom_le->in_agctl[index].extfree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) imap->im_agctl[index].numinos =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) le32_to_cpu(dinom_le->in_agctl[index].numinos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) imap->im_agctl[index].numfree =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) le32_to_cpu(dinom_le->in_agctl[index].numfree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) /* release the buffer. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * allocate/initialize inode allocation map locks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) /* allocate and init iag free list lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) IAGFREE_LOCK_INIT(imap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) /* allocate and init ag list locks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) for (index = 0; index < MAXAG; index++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) AG_LOCK_INIT(imap, index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) /* bind the inode map inode and inode map control structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * to each other.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) imap->im_ipimap = ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) JFS_IP(ipimap)->i_imap = imap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * NAME: diUnmount()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * FUNCTION: write to disk the incore inode map control structures for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * a fileset or aggregate at unmount time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * ipimap - pointer to inode map inode for the aggregate or fileset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * 0 - success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * -ENOMEM - insufficient free virtual memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * -EIO - i/o error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) int diUnmount(struct inode *ipimap, int mounterror)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) struct inomap *imap = JFS_IP(ipimap)->i_imap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * update the on-disk inode map control structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if (!(mounterror || isReadOnly(ipimap)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) diSync(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * Invalidate the page cache buffers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) truncate_inode_pages(ipimap->i_mapping, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * free in-memory control structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) kfree(imap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * diSync()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) int diSync(struct inode *ipimap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) struct dinomap_disk *dinom_le;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) struct inomap *imp = JFS_IP(ipimap)->i_imap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct metapage *mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) int index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) * write imap global conrol page
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) /* read the on-disk inode map control structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) mp = get_metapage(ipimap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) IMAPBLKNO << JFS_SBI(ipimap->i_sb)->l2nbperpage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) PSIZE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (mp == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) jfs_err("diSync: get_metapage failed!");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) /* copy the in-memory version to the on-disk version */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) dinom_le = (struct dinomap_disk *) mp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) dinom_le->in_freeiag = cpu_to_le32(imp->im_freeiag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) dinom_le->in_nextiag = cpu_to_le32(imp->im_nextiag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) dinom_le->in_numinos = cpu_to_le32(atomic_read(&imp->im_numinos));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) dinom_le->in_numfree = cpu_to_le32(atomic_read(&imp->im_numfree));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) dinom_le->in_nbperiext = cpu_to_le32(imp->im_nbperiext);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) dinom_le->in_l2nbperiext = cpu_to_le32(imp->im_l2nbperiext);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) for (index = 0; index < MAXAG; index++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) dinom_le->in_agctl[index].inofree =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) cpu_to_le32(imp->im_agctl[index].inofree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) dinom_le->in_agctl[index].extfree =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) cpu_to_le32(imp->im_agctl[index].extfree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) dinom_le->in_agctl[index].numinos =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) cpu_to_le32(imp->im_agctl[index].numinos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) dinom_le->in_agctl[index].numfree =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) cpu_to_le32(imp->im_agctl[index].numfree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) /* write out the control structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) write_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * write out dirty pages of imap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) filemap_write_and_wait(ipimap->i_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) diWriteSpecial(ipimap, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) * NAME: diRead()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) * FUNCTION: initialize an incore inode from disk.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * on entry, the specifed incore inode should itself
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) * specify the disk inode number corresponding to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * incore inode (i.e. i_number should be initialized).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) * this routine handles incore inode initialization for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) * both "special" and "regular" inodes. special inodes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * are those required early in the mount process and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) * require special handling since much of the file system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) * is not yet initialized. these "special" inodes are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) * identified by a NULL inode map inode pointer and are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) * actually initialized by a call to diReadSpecial().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) * for regular inodes, the iag describing the disk inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) * is read from disk to determine the inode extent address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * for the disk inode. with the inode extent address in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) * hand, the page of the extent that contains the disk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) * inode is read and the disk inode is copied to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) * incore inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) * ip - pointer to incore inode to be initialized from disk.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) * 0 - success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * -EIO - i/o error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) * -ENOMEM - insufficient memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) int diRead(struct inode *ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) struct jfs_sb_info *sbi = JFS_SBI(ip->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) int iagno, ino, extno, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) struct inode *ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) struct dinode *dp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) struct iag *iagp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) struct metapage *mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) s64 blkno, agstart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) struct inomap *imap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) int block_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) int inodes_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) unsigned long pageno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) int rel_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) jfs_info("diRead: ino = %ld", ip->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) ipimap = sbi->ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) JFS_IP(ip)->ipimap = ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) /* determine the iag number for this inode (number) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) iagno = INOTOIAG(ip->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) /* read the iag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) imap = JFS_IP(ipimap)->i_imap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) IREAD_LOCK(ipimap, RDWRLOCK_IMAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) rc = diIAGRead(imap, iagno, &mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) jfs_err("diRead: diIAGRead returned %d", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) iagp = (struct iag *) mp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) /* determine inode extent that holds the disk inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) ino = ip->i_ino & (INOSPERIAG - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) extno = ino >> L2INOSPEREXT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) if ((lengthPXD(&iagp->inoext[extno]) != imap->im_nbperiext) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) (addressPXD(&iagp->inoext[extno]) == 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) return -ESTALE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) /* get disk block number of the page within the inode extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) * that holds the disk inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) blkno = INOPBLK(&iagp->inoext[extno], ino, sbi->l2nbperpage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) /* get the ag for the iag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) agstart = le64_to_cpu(iagp->agstart);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) rel_inode = (ino & (INOSPERPAGE - 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) pageno = blkno >> sbi->l2nbperpage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) if ((block_offset = ((u32) blkno & (sbi->nbperpage - 1)))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) * OS/2 didn't always align inode extents on page boundaries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) inodes_left =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) (sbi->nbperpage - block_offset) << sbi->l2niperblk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) if (rel_inode < inodes_left)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) rel_inode += block_offset << sbi->l2niperblk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) pageno += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) rel_inode -= inodes_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) /* read the page of disk inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) mp = read_metapage(ipimap, pageno << sbi->l2nbperpage, PSIZE, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) if (!mp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) jfs_err("diRead: read_metapage failed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) /* locate the disk inode requested */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) dp = (struct dinode *) mp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) dp += rel_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) if (ip->i_ino != le32_to_cpu(dp->di_number)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) jfs_error(ip->i_sb, "i_ino != di_number\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) } else if (le32_to_cpu(dp->di_nlink) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) rc = -ESTALE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) /* copy the disk inode to the in-memory inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) rc = copy_from_dinode(dp, ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) /* set the ag for the inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) JFS_IP(ip)->agstart = agstart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) JFS_IP(ip)->active_ag = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) * NAME: diReadSpecial()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) * FUNCTION: initialize a 'special' inode from disk.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) * this routines handles aggregate level inodes. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) * inode cache cannot differentiate between the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) * aggregate inodes and the filesystem inodes, so we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) * handle these here. We don't actually use the aggregate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) * inode map, since these inodes are at a fixed location
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) * and in some cases the aggregate inode map isn't initialized
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) * yet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) * sb - filesystem superblock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) * inum - aggregate inode number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) * secondary - 1 if secondary aggregate inode table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) * new inode - success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) * NULL - i/o error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) struct inode *diReadSpecial(struct super_block *sb, ino_t inum, int secondary)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) struct jfs_sb_info *sbi = JFS_SBI(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) uint address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) struct dinode *dp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) struct inode *ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) struct metapage *mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) ip = new_inode(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) if (ip == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) jfs_err("diReadSpecial: new_inode returned NULL!");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) return ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) if (secondary) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) address = addressPXD(&sbi->ait2) >> sbi->l2nbperpage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) JFS_IP(ip)->ipimap = sbi->ipaimap2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) address = AITBL_OFF >> L2PSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) JFS_IP(ip)->ipimap = sbi->ipaimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) ASSERT(inum < INOSPEREXT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) ip->i_ino = inum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) address += inum >> 3; /* 8 inodes per 4K page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) /* read the page of fixed disk inode (AIT) in raw mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) mp = read_metapage(ip, address << sbi->l2nbperpage, PSIZE, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if (mp == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) set_nlink(ip, 1); /* Don't want iput() deleting it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) iput(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) return (NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) /* get the pointer to the disk inode of interest */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) dp = (struct dinode *) (mp->data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) dp += inum % 8; /* 8 inodes per 4K page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) /* copy on-disk inode to in-memory inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) if ((copy_from_dinode(dp, ip)) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) /* handle bad return by returning NULL for ip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) set_nlink(ip, 1); /* Don't want iput() deleting it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) iput(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) /* release the page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) return (NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) ip->i_mapping->a_ops = &jfs_metapage_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) mapping_set_gfp_mask(ip->i_mapping, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) /* Allocations to metadata inodes should not affect quotas */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) ip->i_flags |= S_NOQUOTA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) if ((inum == FILESYSTEM_I) && (JFS_IP(ip)->ipimap == sbi->ipaimap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) sbi->gengen = le32_to_cpu(dp->di_gengen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) sbi->inostamp = le32_to_cpu(dp->di_inostamp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) /* release the page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) inode_fake_hash(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) return (ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) * NAME: diWriteSpecial()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) * FUNCTION: Write the special inode to disk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) * ip - special inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) * secondary - 1 if secondary aggregate inode table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) * RETURN VALUES: none
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) void diWriteSpecial(struct inode *ip, int secondary)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) struct jfs_sb_info *sbi = JFS_SBI(ip->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) uint address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) struct dinode *dp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) ino_t inum = ip->i_ino;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) struct metapage *mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) if (secondary)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) address = addressPXD(&sbi->ait2) >> sbi->l2nbperpage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) address = AITBL_OFF >> L2PSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) ASSERT(inum < INOSPEREXT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) address += inum >> 3; /* 8 inodes per 4K page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) /* read the page of fixed disk inode (AIT) in raw mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) mp = read_metapage(ip, address << sbi->l2nbperpage, PSIZE, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) if (mp == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) jfs_err("diWriteSpecial: failed to read aggregate inode extent!");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) /* get the pointer to the disk inode of interest */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) dp = (struct dinode *) (mp->data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) dp += inum % 8; /* 8 inodes per 4K page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) /* copy on-disk inode to in-memory inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) copy_to_dinode(dp, ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) memcpy(&dp->di_xtroot, &JFS_IP(ip)->i_xtroot, 288);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) if (inum == FILESYSTEM_I)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) dp->di_gengen = cpu_to_le32(sbi->gengen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) /* write the page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) write_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) * NAME: diFreeSpecial()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) * FUNCTION: Free allocated space for special inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) void diFreeSpecial(struct inode *ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) if (ip == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) jfs_err("diFreeSpecial called with NULL ip!");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) filemap_write_and_wait(ip->i_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) truncate_inode_pages(ip->i_mapping, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) iput(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) * NAME: diWrite()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) * FUNCTION: write the on-disk inode portion of the in-memory inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) * to its corresponding on-disk inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) * on entry, the specifed incore inode should itself
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) * specify the disk inode number corresponding to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) * incore inode (i.e. i_number should be initialized).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) * the inode contains the inode extent address for the disk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) * inode. with the inode extent address in hand, the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) * page of the extent that contains the disk inode is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) * read and the disk inode portion of the incore inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) * is copied to the disk inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) * tid - transacation id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) * ip - pointer to incore inode to be written to the inode extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) * 0 - success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) * -EIO - i/o error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) int diWrite(tid_t tid, struct inode *ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) struct jfs_sb_info *sbi = JFS_SBI(ip->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) struct jfs_inode_info *jfs_ip = JFS_IP(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) s32 ino;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) struct dinode *dp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) s64 blkno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) int block_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) int inodes_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) struct metapage *mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) unsigned long pageno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) int rel_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) int dioffset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) struct inode *ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) uint type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) lid_t lid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) struct tlock *ditlck, *tlck;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) struct linelock *dilinelock, *ilinelock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) struct lv *lv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) int n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) ipimap = jfs_ip->ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) ino = ip->i_ino & (INOSPERIAG - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) if (!addressPXD(&(jfs_ip->ixpxd)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) (lengthPXD(&(jfs_ip->ixpxd)) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) JFS_IP(ipimap)->i_imap->im_nbperiext)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) jfs_error(ip->i_sb, "ixpxd invalid\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) * read the page of disk inode containing the specified inode:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) /* compute the block address of the page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) blkno = INOPBLK(&(jfs_ip->ixpxd), ino, sbi->l2nbperpage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) rel_inode = (ino & (INOSPERPAGE - 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) pageno = blkno >> sbi->l2nbperpage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) if ((block_offset = ((u32) blkno & (sbi->nbperpage - 1)))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * OS/2 didn't always align inode extents on page boundaries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) inodes_left =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) (sbi->nbperpage - block_offset) << sbi->l2niperblk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) if (rel_inode < inodes_left)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) rel_inode += block_offset << sbi->l2niperblk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) pageno += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) rel_inode -= inodes_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) /* read the page of disk inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) retry:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) mp = read_metapage(ipimap, pageno << sbi->l2nbperpage, PSIZE, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) if (!mp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) /* get the pointer to the disk inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) dp = (struct dinode *) mp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) dp += rel_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) dioffset = (ino & (INOSPERPAGE - 1)) << L2DISIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) * acquire transaction lock on the on-disk inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) * N.B. tlock is acquired on ipimap not ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) if ((ditlck =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) txLock(tid, ipimap, mp, tlckINODE | tlckENTRY)) == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) goto retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) dilinelock = (struct linelock *) & ditlck->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) * copy btree root from in-memory inode to on-disk inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) * (tlock is taken from inline B+-tree root in in-memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) * inode when the B+-tree root is updated, which is pointed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) * by jfs_ip->blid as well as being on tx tlock list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) * further processing of btree root is based on the copy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) * in in-memory inode, where txLog() will log from, and,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) * for xtree root, txUpdateMap() will update map and reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) * XAD_NEW bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) if (S_ISDIR(ip->i_mode) && (lid = jfs_ip->xtlid)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) * This is the special xtree inside the directory for storing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) * the directory table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) xtpage_t *p, *xp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) xad_t *xad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) jfs_ip->xtlid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) tlck = lid_to_tlock(lid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) assert(tlck->type & tlckXTREE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) tlck->type |= tlckBTROOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) tlck->mp = mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) ilinelock = (struct linelock *) & tlck->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) * copy xtree root from inode to dinode:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) p = &jfs_ip->i_xtroot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) xp = (xtpage_t *) &dp->di_dirtable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) lv = ilinelock->lv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) for (n = 0; n < ilinelock->index; n++, lv++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) memcpy(&xp->xad[lv->offset], &p->xad[lv->offset],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) lv->length << L2XTSLOTSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) /* reset on-disk (metadata page) xtree XAD_NEW bit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) xad = &xp->xad[XTENTRYSTART];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) for (n = XTENTRYSTART;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) n < le16_to_cpu(xp->header.nextindex); n++, xad++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) if (xad->flag & (XAD_NEW | XAD_EXTENDED))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) xad->flag &= ~(XAD_NEW | XAD_EXTENDED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) if ((lid = jfs_ip->blid) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) goto inlineData;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) jfs_ip->blid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) tlck = lid_to_tlock(lid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) type = tlck->type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) tlck->type |= tlckBTROOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) tlck->mp = mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) ilinelock = (struct linelock *) & tlck->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) * regular file: 16 byte (XAD slot) granularity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) if (type & tlckXTREE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) xtpage_t *p, *xp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) xad_t *xad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) * copy xtree root from inode to dinode:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) p = &jfs_ip->i_xtroot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) xp = &dp->di_xtroot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) lv = ilinelock->lv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) for (n = 0; n < ilinelock->index; n++, lv++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) memcpy(&xp->xad[lv->offset], &p->xad[lv->offset],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) lv->length << L2XTSLOTSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) /* reset on-disk (metadata page) xtree XAD_NEW bit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) xad = &xp->xad[XTENTRYSTART];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) for (n = XTENTRYSTART;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) n < le16_to_cpu(xp->header.nextindex); n++, xad++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) if (xad->flag & (XAD_NEW | XAD_EXTENDED))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) xad->flag &= ~(XAD_NEW | XAD_EXTENDED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) * directory: 32 byte (directory entry slot) granularity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) else if (type & tlckDTREE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) dtpage_t *p, *xp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) * copy dtree root from inode to dinode:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) p = (dtpage_t *) &jfs_ip->i_dtroot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) xp = (dtpage_t *) & dp->di_dtroot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) lv = ilinelock->lv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) for (n = 0; n < ilinelock->index; n++, lv++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) memcpy(&xp->slot[lv->offset], &p->slot[lv->offset],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) lv->length << L2DTSLOTSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) jfs_err("diWrite: UFO tlock");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) inlineData:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) * copy inline symlink from in-memory inode to on-disk inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) if (S_ISLNK(ip->i_mode) && ip->i_size < IDATASIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) lv = & dilinelock->lv[dilinelock->index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) lv->offset = (dioffset + 2 * 128) >> L2INODESLOTSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) lv->length = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) memcpy(&dp->di_fastsymlink, jfs_ip->i_inline, IDATASIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) dilinelock->index++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) * copy inline data from in-memory inode to on-disk inode:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) * 128 byte slot granularity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) if (test_cflag(COMMIT_Inlineea, ip)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) lv = & dilinelock->lv[dilinelock->index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) lv->offset = (dioffset + 3 * 128) >> L2INODESLOTSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) lv->length = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) memcpy(&dp->di_inlineea, jfs_ip->i_inline_ea, INODESLOTSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) dilinelock->index++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) clear_cflag(COMMIT_Inlineea, ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) * lock/copy inode base: 128 byte slot granularity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) lv = & dilinelock->lv[dilinelock->index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) lv->offset = dioffset >> L2INODESLOTSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) copy_to_dinode(dp, ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) if (test_and_clear_cflag(COMMIT_Dirtable, ip)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) lv->length = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) memcpy(&dp->di_dirtable, &jfs_ip->i_dirtable, 96);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) lv->length = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) dilinelock->index++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) /* release the buffer holding the updated on-disk inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) * the buffer will be later written by commit processing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) write_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) * NAME: diFree(ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) * FUNCTION: free a specified inode from the inode working map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) * for a fileset or aggregate.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) * if the inode to be freed represents the first (only)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) * free inode within the iag, the iag will be placed on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) * the ag free inode list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) * freeing the inode will cause the inode extent to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) * freed if the inode is the only allocated inode within
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) * the extent. in this case all the disk resource backing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) * up the inode extent will be freed. in addition, the iag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) * will be placed on the ag extent free list if the extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) * is the first free extent in the iag. if freeing the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) * extent also means that no free inodes will exist for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) * the iag, the iag will also be removed from the ag free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) * inode list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) * the iag describing the inode will be freed if the extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) * is to be freed and it is the only backed extent within
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) * the iag. in this case, the iag will be removed from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) * ag free extent list and ag free inode list and placed on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) * the inode map's free iag list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) * a careful update approach is used to provide consistency
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) * in the face of updates to multiple buffers. under this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) * approach, all required buffers are obtained before making
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) * any updates and are held until all updates are complete.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) * ip - inode to be freed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) * 0 - success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) * -EIO - i/o error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) int diFree(struct inode *ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) ino_t inum = ip->i_ino;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) struct iag *iagp, *aiagp, *biagp, *ciagp, *diagp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) struct metapage *mp, *amp, *bmp, *cmp, *dmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) int iagno, ino, extno, bitno, sword, agno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) int back, fwd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) u32 bitmap, mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) struct inode *ipimap = JFS_SBI(ip->i_sb)->ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) struct inomap *imap = JFS_IP(ipimap)->i_imap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) pxd_t freepxd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) tid_t tid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) struct inode *iplist[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) struct tlock *tlck;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) struct pxd_lock *pxdlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) * This is just to suppress compiler warnings. The same logic that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) * references these variables is used to initialize them.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) aiagp = biagp = ciagp = diagp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) /* get the iag number containing the inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) iagno = INOTOIAG(inum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) /* make sure that the iag is contained within
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) * the map.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) if (iagno >= imap->im_nextiag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) print_hex_dump(KERN_ERR, "imap: ", DUMP_PREFIX_ADDRESS, 16, 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) imap, 32, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) jfs_error(ip->i_sb, "inum = %d, iagno = %d, nextiag = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) (uint) inum, iagno, imap->im_nextiag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) /* get the allocation group for this ino.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) agno = BLKTOAG(JFS_IP(ip)->agstart, JFS_SBI(ip->i_sb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) /* Lock the AG specific inode map information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) AG_LOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) /* Obtain read lock in imap inode. Don't release it until we have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) * read all of the IAG's that we are going to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) IREAD_LOCK(ipimap, RDWRLOCK_IMAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) /* read the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) if ((rc = diIAGRead(imap, iagno, &mp))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) AG_UNLOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) iagp = (struct iag *) mp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) /* get the inode number and extent number of the inode within
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) * the iag and the inode number within the extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) ino = inum & (INOSPERIAG - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) extno = ino >> L2INOSPEREXT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) bitno = ino & (INOSPEREXT - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) mask = HIGHORDER >> bitno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) if (!(le32_to_cpu(iagp->wmap[extno]) & mask)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) jfs_error(ip->i_sb, "wmap shows inode already free\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) if (!addressPXD(&iagp->inoext[extno])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) AG_UNLOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) jfs_error(ip->i_sb, "invalid inoext\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) /* compute the bitmap for the extent reflecting the freed inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) bitmap = le32_to_cpu(iagp->wmap[extno]) & ~mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) if (imap->im_agctl[agno].numfree > imap->im_agctl[agno].numinos) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) AG_UNLOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) jfs_error(ip->i_sb, "numfree > numinos\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) * inode extent still has some inodes or below low water mark:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) * keep the inode extent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) if (bitmap ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) imap->im_agctl[agno].numfree < 96 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) (imap->im_agctl[agno].numfree < 288 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) (((imap->im_agctl[agno].numfree * 100) /
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) imap->im_agctl[agno].numinos) <= 25))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) /* if the iag currently has no free inodes (i.e.,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) * the inode being freed is the first free inode of iag),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) * insert the iag at head of the inode free list for the ag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) if (iagp->nfreeinos == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) /* check if there are any iags on the ag inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) * free list. if so, read the first one so that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) * we can link the current iag onto the list at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) * the head.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) if ((fwd = imap->im_agctl[agno].inofree) >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) /* read the iag that currently is the head
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) * of the list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) if ((rc = diIAGRead(imap, fwd, &))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) AG_UNLOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) aiagp = (struct iag *) amp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) /* make current head point back to the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) aiagp->inofreeback = cpu_to_le32(iagno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) write_metapage(amp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) /* iag points forward to current head and iag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) * becomes the new head of the list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) iagp->inofreefwd =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) cpu_to_le32(imap->im_agctl[agno].inofree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) iagp->inofreeback = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) imap->im_agctl[agno].inofree = iagno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) /* update the free inode summary map for the extent if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) * freeing the inode means the extent will now have free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) * inodes (i.e., the inode being freed is the first free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) * inode of extent),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) if (iagp->wmap[extno] == cpu_to_le32(ONES)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) sword = extno >> L2EXTSPERSUM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) bitno = extno & (EXTSPERSUM - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) iagp->inosmap[sword] &=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) cpu_to_le32(~(HIGHORDER >> bitno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) /* update the bitmap.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) iagp->wmap[extno] = cpu_to_le32(bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) /* update the free inode counts at the iag, ag and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) * map level.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) le32_add_cpu(&iagp->nfreeinos, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) imap->im_agctl[agno].numfree += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) atomic_inc(&imap->im_numfree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) /* release the AG inode map lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) AG_UNLOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) /* write the iag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) write_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) * inode extent has become free and above low water mark:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) * free the inode extent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) * prepare to update iag list(s) (careful update step 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) amp = bmp = cmp = dmp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) fwd = back = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) /* check if the iag currently has no free extents. if so,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) * it will be placed on the head of the ag extent free list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) if (iagp->nfreeexts == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) /* check if the ag extent free list has any iags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) * if so, read the iag at the head of the list now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) * this (head) iag will be updated later to reflect
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) * the addition of the current iag at the head of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) * the list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) if ((fwd = imap->im_agctl[agno].extfree) >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) if ((rc = diIAGRead(imap, fwd, &)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) goto error_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) aiagp = (struct iag *) amp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) /* iag has free extents. check if the addition of a free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) * extent will cause all extents to be free within this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) * iag. if so, the iag will be removed from the ag extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) * free list and placed on the inode map's free iag list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) if (iagp->nfreeexts == cpu_to_le32(EXTSPERIAG - 1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) /* in preparation for removing the iag from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) * ag extent free list, read the iags preceding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) * and following the iag on the ag extent free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) * list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) if ((fwd = le32_to_cpu(iagp->extfreefwd)) >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) if ((rc = diIAGRead(imap, fwd, &)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) goto error_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) aiagp = (struct iag *) amp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) if ((back = le32_to_cpu(iagp->extfreeback)) >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) if ((rc = diIAGRead(imap, back, &bmp)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) goto error_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) biagp = (struct iag *) bmp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) /* remove the iag from the ag inode free list if freeing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) * this extent cause the iag to have no free inodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) if (iagp->nfreeinos == cpu_to_le32(INOSPEREXT - 1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) int inofreeback = le32_to_cpu(iagp->inofreeback);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) int inofreefwd = le32_to_cpu(iagp->inofreefwd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) /* in preparation for removing the iag from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) * ag inode free list, read the iags preceding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) * and following the iag on the ag inode free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) * list. before reading these iags, we must make
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) * sure that we already don't have them in hand
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) * from up above, since re-reading an iag (buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) * we are currently holding would cause a deadlock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) if (inofreefwd >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) if (inofreefwd == fwd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) ciagp = (struct iag *) amp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) else if (inofreefwd == back)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) ciagp = (struct iag *) bmp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) if ((rc =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) diIAGRead(imap, inofreefwd, &cmp)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) goto error_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) ciagp = (struct iag *) cmp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) assert(ciagp != NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) if (inofreeback >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) if (inofreeback == fwd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) diagp = (struct iag *) amp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) else if (inofreeback == back)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) diagp = (struct iag *) bmp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) if ((rc =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) diIAGRead(imap, inofreeback, &dmp)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) goto error_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) diagp = (struct iag *) dmp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) assert(diagp != NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) * invalidate any page of the inode extent freed from buffer cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) freepxd = iagp->inoext[extno];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) invalidate_pxd_metapages(ip, freepxd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) * update iag list(s) (careful update step 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) /* add the iag to the ag extent free list if this is the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) * first free extent for the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) if (iagp->nfreeexts == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) if (fwd >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) aiagp->extfreeback = cpu_to_le32(iagno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) iagp->extfreefwd =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) cpu_to_le32(imap->im_agctl[agno].extfree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) iagp->extfreeback = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) imap->im_agctl[agno].extfree = iagno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) /* remove the iag from the ag extent list if all extents
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) * are now free and place it on the inode map iag free list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) if (iagp->nfreeexts == cpu_to_le32(EXTSPERIAG - 1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) if (fwd >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) aiagp->extfreeback = iagp->extfreeback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) if (back >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) biagp->extfreefwd = iagp->extfreefwd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) imap->im_agctl[agno].extfree =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) le32_to_cpu(iagp->extfreefwd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) iagp->extfreefwd = iagp->extfreeback = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) IAGFREE_LOCK(imap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) iagp->iagfree = cpu_to_le32(imap->im_freeiag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) imap->im_freeiag = iagno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) IAGFREE_UNLOCK(imap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) /* remove the iag from the ag inode free list if freeing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) * this extent causes the iag to have no free inodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) if (iagp->nfreeinos == cpu_to_le32(INOSPEREXT - 1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) if ((int) le32_to_cpu(iagp->inofreefwd) >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) ciagp->inofreeback = iagp->inofreeback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) if ((int) le32_to_cpu(iagp->inofreeback) >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) diagp->inofreefwd = iagp->inofreefwd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) imap->im_agctl[agno].inofree =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) le32_to_cpu(iagp->inofreefwd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) iagp->inofreefwd = iagp->inofreeback = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) /* update the inode extent address and working map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) * to reflect the free extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) * the permanent map should have been updated already
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) * for the inode being freed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) if (iagp->pmap[extno] != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) jfs_error(ip->i_sb, "the pmap does not show inode free\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) iagp->wmap[extno] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) PXDlength(&iagp->inoext[extno], 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) PXDaddress(&iagp->inoext[extno], 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) /* update the free extent and free inode summary maps
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) * to reflect the freed extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) * the inode summary map is marked to indicate no inodes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) * available for the freed extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) sword = extno >> L2EXTSPERSUM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) bitno = extno & (EXTSPERSUM - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) mask = HIGHORDER >> bitno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) iagp->inosmap[sword] |= cpu_to_le32(mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) iagp->extsmap[sword] &= cpu_to_le32(~mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) /* update the number of free inodes and number of free extents
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) * for the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) le32_add_cpu(&iagp->nfreeinos, -(INOSPEREXT - 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) le32_add_cpu(&iagp->nfreeexts, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) /* update the number of free inodes and backed inodes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) * at the ag and inode map level.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) imap->im_agctl[agno].numfree -= (INOSPEREXT - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) imap->im_agctl[agno].numinos -= INOSPEREXT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) atomic_sub(INOSPEREXT - 1, &imap->im_numfree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) atomic_sub(INOSPEREXT, &imap->im_numinos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) if (amp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) write_metapage(amp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) if (bmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) write_metapage(bmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) if (cmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) write_metapage(cmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) if (dmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) write_metapage(dmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) * start transaction to update block allocation map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) * for the inode extent freed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) * N.B. AG_LOCK is released and iag will be released below, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) * other thread may allocate inode from/reusing the ixad freed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) * BUT with new/different backing inode extent from the extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) * to be freed by the transaction;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) tid = txBegin(ipimap->i_sb, COMMIT_FORCE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) mutex_lock(&JFS_IP(ipimap)->commit_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) /* acquire tlock of the iag page of the freed ixad
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) * to force the page NOHOMEOK (even though no data is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) * logged from the iag page) until NOREDOPAGE|FREEXTENT log
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) * for the free of the extent is committed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) * write FREEXTENT|NOREDOPAGE log record
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) * N.B. linelock is overlaid as freed extent descriptor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) tlck = txLock(tid, ipimap, mp, tlckINODE | tlckFREE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) pxdlock = (struct pxd_lock *) & tlck->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) pxdlock->flag = mlckFREEPXD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) pxdlock->pxd = freepxd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) pxdlock->index = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) write_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) iplist[0] = ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) * logredo needs the IAG number and IAG extent index in order
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) * to ensure that the IMap is consistent. The least disruptive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) * way to pass these values through to the transaction manager
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) * is in the iplist array.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) * It's not pretty, but it works.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) iplist[1] = (struct inode *) (size_t)iagno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) iplist[2] = (struct inode *) (size_t)extno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) rc = txCommit(tid, 1, &iplist[0], COMMIT_FORCE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) txEnd(tid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) mutex_unlock(&JFS_IP(ipimap)->commit_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) /* unlock the AG inode map information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) AG_UNLOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) error_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) if (amp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) release_metapage(amp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) if (bmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) release_metapage(bmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) if (cmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) release_metapage(cmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) if (dmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) release_metapage(dmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) AG_UNLOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) * There are several places in the diAlloc* routines where we initialize
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) * the inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) diInitInode(struct inode *ip, int iagno, int ino, int extno, struct iag * iagp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) struct jfs_inode_info *jfs_ip = JFS_IP(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) ip->i_ino = (iagno << L2INOSPERIAG) + ino;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) jfs_ip->ixpxd = iagp->inoext[extno];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) jfs_ip->agstart = le64_to_cpu(iagp->agstart);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) jfs_ip->active_ag = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) * NAME: diAlloc(pip,dir,ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) * FUNCTION: allocate a disk inode from the inode working map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) * for a fileset or aggregate.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) * pip - pointer to incore inode for the parent inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) * dir - 'true' if the new disk inode is for a directory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) * ip - pointer to a new inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) * 0 - success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) * -ENOSPC - insufficient disk resources.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) * -EIO - i/o error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) int diAlloc(struct inode *pip, bool dir, struct inode *ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) int rc, ino, iagno, addext, extno, bitno, sword;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) int nwords, rem, i, agno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) u32 mask, inosmap, extsmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) struct inode *ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) struct metapage *mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) ino_t inum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) struct iag *iagp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) struct inomap *imap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) /* get the pointers to the inode map inode and the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) * corresponding imap control structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) ipimap = JFS_SBI(pip->i_sb)->ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) imap = JFS_IP(ipimap)->i_imap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) JFS_IP(ip)->ipimap = ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) JFS_IP(ip)->fileset = FILESYSTEM_I;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) /* for a directory, the allocation policy is to start
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) * at the ag level using the preferred ag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) if (dir) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) agno = dbNextAG(JFS_SBI(pip->i_sb)->ipbmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) AG_LOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) goto tryag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) /* for files, the policy starts off by trying to allocate from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) * the same iag containing the parent disk inode:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) * try to allocate the new disk inode close to the parent disk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) * inode, using parent disk inode number + 1 as the allocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) * hint. (we use a left-to-right policy to attempt to avoid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) * moving backward on the disk.) compute the hint within the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) * file system and the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) /* get the ag number of this iag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) agno = BLKTOAG(JFS_IP(pip)->agstart, JFS_SBI(pip->i_sb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) if (atomic_read(&JFS_SBI(pip->i_sb)->bmap->db_active[agno])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) * There is an open file actively growing. We want to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) * allocate new inodes from a different ag to avoid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) * fragmentation problems.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) agno = dbNextAG(JFS_SBI(pip->i_sb)->ipbmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) AG_LOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) goto tryag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) inum = pip->i_ino + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) ino = inum & (INOSPERIAG - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) /* back off the hint if it is outside of the iag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) if (ino == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) inum = pip->i_ino;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) /* lock the AG inode map information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) AG_LOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) /* Get read lock on imap inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) IREAD_LOCK(ipimap, RDWRLOCK_IMAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) /* get the iag number and read the iag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) iagno = INOTOIAG(inum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) if ((rc = diIAGRead(imap, iagno, &mp))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) AG_UNLOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) iagp = (struct iag *) mp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) /* determine if new inode extent is allowed to be added to the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) * new inode extent can be added to the iag if the ag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) * has less than 32 free disk inodes and the iag has free extents.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) addext = (imap->im_agctl[agno].numfree < 32 && iagp->nfreeexts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) * try to allocate from the IAG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) /* check if the inode may be allocated from the iag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) * (i.e. the inode has free inodes or new extent can be added).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) if (iagp->nfreeinos || addext) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) /* determine the extent number of the hint.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) extno = ino >> L2INOSPEREXT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) /* check if the extent containing the hint has backed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) * inodes. if so, try to allocate within this extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) if (addressPXD(&iagp->inoext[extno])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) bitno = ino & (INOSPEREXT - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) if ((bitno =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) diFindFree(le32_to_cpu(iagp->wmap[extno]),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) bitno))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) < INOSPEREXT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) ino = (extno << L2INOSPEREXT) + bitno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) /* a free inode (bit) was found within this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) * extent, so allocate it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) rc = diAllocBit(imap, iagp, ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) assert(rc == -EIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) /* set the results of the allocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) * and write the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) diInitInode(ip, iagno, ino, extno,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) iagp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) mark_metapage_dirty(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) /* free the AG lock and return.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) AG_UNLOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) if (!addext)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) extno =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) (extno ==
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) EXTSPERIAG - 1) ? 0 : extno + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) * no free inodes within the extent containing the hint.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) * try to allocate from the backed extents following
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) * hint or, if appropriate (i.e. addext is true), allocate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) * an extent of free inodes at or following the extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) * containing the hint.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) * the free inode and free extent summary maps are used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) * here, so determine the starting summary map position
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) * and the number of words we'll have to examine. again,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) * the approach is to allocate following the hint, so we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) * might have to initially ignore prior bits of the summary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) * map that represent extents prior to the extent containing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) * the hint and later revisit these bits.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) bitno = extno & (EXTSPERSUM - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) nwords = (bitno == 0) ? SMAPSZ : SMAPSZ + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) sword = extno >> L2EXTSPERSUM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) /* mask any prior bits for the starting words of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) * summary map.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) mask = (bitno == 0) ? 0 : (ONES << (EXTSPERSUM - bitno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) inosmap = le32_to_cpu(iagp->inosmap[sword]) | mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) extsmap = le32_to_cpu(iagp->extsmap[sword]) | mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) /* scan the free inode and free extent summary maps for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) * free resources.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) for (i = 0; i < nwords; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) /* check if this word of the free inode summary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) * map describes an extent with free inodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) if (~inosmap) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) /* an extent with free inodes has been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) * found. determine the extent number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) * and the inode number within the extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) rem = diFindFree(inosmap, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) extno = (sword << L2EXTSPERSUM) + rem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) rem = diFindFree(le32_to_cpu(iagp->wmap[extno]),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) if (rem >= INOSPEREXT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) AG_UNLOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) jfs_error(ip->i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) "can't find free bit in wmap\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) /* determine the inode number within the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) * iag and allocate the inode from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) * map.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) ino = (extno << L2INOSPEREXT) + rem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) rc = diAllocBit(imap, iagp, ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) assert(rc == -EIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) /* set the results of the allocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) * and write the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) diInitInode(ip, iagno, ino, extno,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) iagp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) mark_metapage_dirty(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) /* free the AG lock and return.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) AG_UNLOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) /* check if we may allocate an extent of free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) * inodes and whether this word of the free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) * extents summary map describes a free extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) if (addext && ~extsmap) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) /* a free extent has been found. determine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) * the extent number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) rem = diFindFree(extsmap, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) extno = (sword << L2EXTSPERSUM) + rem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) /* allocate an extent of free inodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) if ((rc = diNewExt(imap, iagp, extno))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) /* if there is no disk space for a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) * new extent, try to allocate the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) * disk inode from somewhere else.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) if (rc == -ENOSPC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) assert(rc == -EIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) /* set the results of the allocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) * and write the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) diInitInode(ip, iagno,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) extno << L2INOSPEREXT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) extno, iagp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) mark_metapage_dirty(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) /* free the imap inode & the AG lock & return.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) AG_UNLOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) /* move on to the next set of summary map words.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) sword = (sword == SMAPSZ - 1) ? 0 : sword + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) inosmap = le32_to_cpu(iagp->inosmap[sword]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) extsmap = le32_to_cpu(iagp->extsmap[sword]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) /* unlock imap inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) /* nothing doing in this iag, so release it. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) tryag:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) * try to allocate anywhere within the same AG as the parent inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) rc = diAllocAG(imap, agno, dir, ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) AG_UNLOCK(imap, agno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) if (rc != -ENOSPC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) * try to allocate in any AG.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) return (diAllocAny(imap, agno, dir, ip));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) * NAME: diAllocAG(imap,agno,dir,ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) * FUNCTION: allocate a disk inode from the allocation group.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) * this routine first determines if a new extent of free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) * inodes should be added for the allocation group, with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) * the current request satisfied from this extent. if this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) * is the case, an attempt will be made to do just that. if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) * this attempt fails or it has been determined that a new
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) * extent should not be added, an attempt is made to satisfy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) * the request by allocating an existing (backed) free inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) * from the allocation group.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) * PRE CONDITION: Already have the AG lock for this AG.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) * imap - pointer to inode map control structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) * agno - allocation group to allocate from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) * dir - 'true' if the new disk inode is for a directory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) * ip - pointer to the new inode to be filled in on successful return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) * with the disk inode number allocated, its extent address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) * and the start of the ag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) * 0 - success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) * -ENOSPC - insufficient disk resources.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) * -EIO - i/o error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) diAllocAG(struct inomap * imap, int agno, bool dir, struct inode *ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) int rc, addext, numfree, numinos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) /* get the number of free and the number of backed disk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) * inodes currently within the ag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) numfree = imap->im_agctl[agno].numfree;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) numinos = imap->im_agctl[agno].numinos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) if (numfree > numinos) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) jfs_error(ip->i_sb, "numfree > numinos\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) /* determine if we should allocate a new extent of free inodes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) * within the ag: for directory inodes, add a new extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) * if there are a small number of free inodes or number of free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) * inodes is a small percentage of the number of backed inodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) if (dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) addext = (numfree < 64 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) (numfree < 256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) && ((numfree * 100) / numinos) <= 20));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) addext = (numfree == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) * try to allocate a new extent of free inodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) if (addext) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) /* if free space is not available for this new extent, try
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) * below to allocate a free and existing (already backed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) * inode from the ag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) if ((rc = diAllocExt(imap, agno, ip)) != -ENOSPC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) * try to allocate an existing free inode from the ag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) return (diAllocIno(imap, agno, ip));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) * NAME: diAllocAny(imap,agno,dir,iap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) * FUNCTION: allocate a disk inode from any other allocation group.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) * this routine is called when an allocation attempt within
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) * the primary allocation group has failed. if attempts to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) * allocate an inode from any allocation group other than the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) * specified primary group.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) * imap - pointer to inode map control structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) * agno - primary allocation group (to avoid).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) * dir - 'true' if the new disk inode is for a directory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) * ip - pointer to a new inode to be filled in on successful return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) * with the disk inode number allocated, its extent address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) * and the start of the ag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) * 0 - success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) * -ENOSPC - insufficient disk resources.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) * -EIO - i/o error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) diAllocAny(struct inomap * imap, int agno, bool dir, struct inode *ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) int ag, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) int maxag = JFS_SBI(imap->im_ipimap->i_sb)->bmap->db_maxag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) /* try to allocate from the ags following agno up to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) * the maximum ag number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) for (ag = agno + 1; ag <= maxag; ag++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) AG_LOCK(imap, ag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) rc = diAllocAG(imap, ag, dir, ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) AG_UNLOCK(imap, ag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) if (rc != -ENOSPC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) /* try to allocate from the ags in front of agno.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) for (ag = 0; ag < agno; ag++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) AG_LOCK(imap, ag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) rc = diAllocAG(imap, ag, dir, ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) AG_UNLOCK(imap, ag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) if (rc != -ENOSPC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) /* no free disk inodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) return -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) * NAME: diAllocIno(imap,agno,ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) * FUNCTION: allocate a disk inode from the allocation group's free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) * inode list, returning an error if this free list is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) * empty (i.e. no iags on the list).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) * allocation occurs from the first iag on the list using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) * the iag's free inode summary map to find the leftmost
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) * free inode in the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) * PRE CONDITION: Already have AG lock for this AG.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) * imap - pointer to inode map control structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) * agno - allocation group.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) * ip - pointer to new inode to be filled in on successful return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) * with the disk inode number allocated, its extent address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) * and the start of the ag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) * 0 - success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) * -ENOSPC - insufficient disk resources.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) * -EIO - i/o error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) static int diAllocIno(struct inomap * imap, int agno, struct inode *ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) int iagno, ino, rc, rem, extno, sword;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) struct metapage *mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) struct iag *iagp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) /* check if there are iags on the ag's free inode list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) if ((iagno = imap->im_agctl[agno].inofree) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) return -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) /* obtain read lock on imap inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) IREAD_LOCK(imap->im_ipimap, RDWRLOCK_IMAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) /* read the iag at the head of the list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) if ((rc = diIAGRead(imap, iagno, &mp))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) IREAD_UNLOCK(imap->im_ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) iagp = (struct iag *) mp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) /* better be free inodes in this iag if it is on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) * list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) if (!iagp->nfreeinos) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) IREAD_UNLOCK(imap->im_ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) jfs_error(ip->i_sb, "nfreeinos = 0, but iag on freelist\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) /* scan the free inode summary map to find an extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) * with free inodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) for (sword = 0;; sword++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) if (sword >= SMAPSZ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) IREAD_UNLOCK(imap->im_ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) jfs_error(ip->i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) "free inode not found in summary map\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) if (~iagp->inosmap[sword])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) /* found a extent with free inodes. determine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) * the extent number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) rem = diFindFree(le32_to_cpu(iagp->inosmap[sword]), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) if (rem >= EXTSPERSUM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) IREAD_UNLOCK(imap->im_ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818) jfs_error(ip->i_sb, "no free extent found\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) extno = (sword << L2EXTSPERSUM) + rem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) /* find the first free inode in the extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) rem = diFindFree(le32_to_cpu(iagp->wmap[extno]), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) if (rem >= INOSPEREXT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) IREAD_UNLOCK(imap->im_ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) jfs_error(ip->i_sb, "free inode not found\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) /* compute the inode number within the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) ino = (extno << L2INOSPEREXT) + rem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) /* allocate the inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) rc = diAllocBit(imap, iagp, ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) IREAD_UNLOCK(imap->im_ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) /* set the results of the allocation and write the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) diInitInode(ip, iagno, ino, extno, iagp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) write_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) * NAME: diAllocExt(imap,agno,ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) * FUNCTION: add a new extent of free inodes to an iag, allocating
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) * an inode from this extent to satisfy the current allocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) * request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) * this routine first tries to find an existing iag with free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863) * extents through the ag free extent list. if list is not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) * empty, the head of the list will be selected as the home
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) * of the new extent of free inodes. otherwise (the list is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) * empty), a new iag will be allocated for the ag to contain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) * the extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) * once an iag has been selected, the free extent summary map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) * is used to locate a free extent within the iag and diNewExt()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) * is called to initialize the extent, with initialization
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) * including the allocation of the first inode of the extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) * for the purpose of satisfying this request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876) * imap - pointer to inode map control structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) * agno - allocation group number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) * ip - pointer to new inode to be filled in on successful return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) * with the disk inode number allocated, its extent address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) * and the start of the ag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883) * 0 - success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) * -ENOSPC - insufficient disk resources.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) * -EIO - i/o error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) static int diAllocExt(struct inomap * imap, int agno, struct inode *ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) int rem, iagno, sword, extno, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890) struct metapage *mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) struct iag *iagp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) /* check if the ag has any iags with free extents. if not,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894) * allocate a new iag for the ag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) if ((iagno = imap->im_agctl[agno].extfree) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) /* If successful, diNewIAG will obtain the read lock on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) * imap inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) if ((rc = diNewIAG(imap, &iagno, agno, &mp))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) iagp = (struct iag *) mp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) /* set the ag number if this a brand new iag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) iagp->agstart =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) cpu_to_le64(AGTOBLK(agno, imap->im_ipimap));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) /* read the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) IREAD_LOCK(imap->im_ipimap, RDWRLOCK_IMAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) if ((rc = diIAGRead(imap, iagno, &mp))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) IREAD_UNLOCK(imap->im_ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) jfs_error(ip->i_sb, "error reading iag\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) iagp = (struct iag *) mp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) /* using the free extent summary map, find a free extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) for (sword = 0;; sword++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) if (sword >= SMAPSZ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) IREAD_UNLOCK(imap->im_ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) jfs_error(ip->i_sb, "free ext summary map not found\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) if (~iagp->extsmap[sword])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) /* determine the extent number of the free extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) rem = diFindFree(le32_to_cpu(iagp->extsmap[sword]), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) if (rem >= EXTSPERSUM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939) IREAD_UNLOCK(imap->im_ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) jfs_error(ip->i_sb, "free extent not found\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) extno = (sword << L2EXTSPERSUM) + rem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) /* initialize the new extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) rc = diNewExt(imap, iagp, extno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) IREAD_UNLOCK(imap->im_ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) /* something bad happened. if a new iag was allocated,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951) * place it back on the inode map's iag free list, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) * clear the ag number information.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) if (iagp->nfreeexts == cpu_to_le32(EXTSPERIAG)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) IAGFREE_LOCK(imap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) iagp->iagfree = cpu_to_le32(imap->im_freeiag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) imap->im_freeiag = iagno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) IAGFREE_UNLOCK(imap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960) write_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) /* set the results of the allocation and write the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966) diInitInode(ip, iagno, extno << L2INOSPEREXT, extno, iagp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) write_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) * NAME: diAllocBit(imap,iagp,ino)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977) * FUNCTION: allocate a backed inode from an iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) * this routine performs the mechanics of allocating a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) * specified inode from a backed extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982) * if the inode to be allocated represents the last free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983) * inode within the iag, the iag will be removed from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) * ag free inode list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986) * a careful update approach is used to provide consistency
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) * in the face of updates to multiple buffers. under this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988) * approach, all required buffers are obtained before making
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989) * any updates and are held all are updates are complete.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) * PRE CONDITION: Already have buffer lock on iagp. Already have AG lock on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) * this AG. Must have read lock on imap inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) * imap - pointer to inode map control structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996) * iagp - pointer to iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) * ino - inode number to be allocated within the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) * 0 - success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) * -ENOSPC - insufficient disk resources.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) * -EIO - i/o error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004) static int diAllocBit(struct inomap * imap, struct iag * iagp, int ino)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006) int extno, bitno, agno, sword, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007) struct metapage *amp = NULL, *bmp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) struct iag *aiagp = NULL, *biagp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009) u32 mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) /* check if this is the last free inode within the iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012) * if so, it will have to be removed from the ag free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013) * inode list, so get the iags preceding and following
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014) * it on the list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) if (iagp->nfreeinos == cpu_to_le32(1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) if ((int) le32_to_cpu(iagp->inofreefwd) >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) if ((rc =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) diIAGRead(imap, le32_to_cpu(iagp->inofreefwd),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) &)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) aiagp = (struct iag *) amp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) if ((int) le32_to_cpu(iagp->inofreeback) >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) if ((rc =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) diIAGRead(imap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) le32_to_cpu(iagp->inofreeback),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) &bmp))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030) if (amp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) release_metapage(amp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) biagp = (struct iag *) bmp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) /* get the ag number, extent number, inode number within
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039) * the extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) agno = BLKTOAG(le64_to_cpu(iagp->agstart), JFS_SBI(imap->im_ipimap->i_sb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042) extno = ino >> L2INOSPEREXT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) bitno = ino & (INOSPEREXT - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045) /* compute the mask for setting the map.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) mask = HIGHORDER >> bitno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) /* the inode should be free and backed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) if (((le32_to_cpu(iagp->pmap[extno]) & mask) != 0) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) ((le32_to_cpu(iagp->wmap[extno]) & mask) != 0) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053) (addressPXD(&iagp->inoext[extno]) == 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) if (amp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055) release_metapage(amp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056) if (bmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) release_metapage(bmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059) jfs_error(imap->im_ipimap->i_sb, "iag inconsistent\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) /* mark the inode as allocated in the working map.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) iagp->wmap[extno] |= cpu_to_le32(mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) /* check if all inodes within the extent are now
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068) * allocated. if so, update the free inode summary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) * map to reflect this.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071) if (iagp->wmap[extno] == cpu_to_le32(ONES)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) sword = extno >> L2EXTSPERSUM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073) bitno = extno & (EXTSPERSUM - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074) iagp->inosmap[sword] |= cpu_to_le32(HIGHORDER >> bitno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) /* if this was the last free inode in the iag, remove the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078) * iag from the ag free inode list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) if (iagp->nfreeinos == cpu_to_le32(1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081) if (amp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) aiagp->inofreeback = iagp->inofreeback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) write_metapage(amp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086) if (bmp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) biagp->inofreefwd = iagp->inofreefwd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088) write_metapage(bmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) imap->im_agctl[agno].inofree =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) le32_to_cpu(iagp->inofreefwd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) iagp->inofreefwd = iagp->inofreeback = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096) /* update the free inode count at the iag, ag, inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097) * map levels.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099) le32_add_cpu(&iagp->nfreeinos, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100) imap->im_agctl[agno].numfree -= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101) atomic_dec(&imap->im_numfree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108) * NAME: diNewExt(imap,iagp,extno)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110) * FUNCTION: initialize a new extent of inodes for an iag, allocating
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111) * the first inode of the extent for use for the current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) * allocation request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114) * disk resources are allocated for the new extent of inodes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115) * and the inodes themselves are initialized to reflect their
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) * existence within the extent (i.e. their inode numbers and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117) * inode extent addresses are set) and their initial state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118) * (mode and link count are set to zero).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120) * if the iag is new, it is not yet on an ag extent free list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121) * but will now be placed on this list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2122) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2123) * if the allocation of the new extent causes the iag to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2124) * have no free extent, the iag will be removed from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2125) * ag extent free list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2126) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2127) * if the iag has no free backed inodes, it will be placed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2128) * on the ag free inode list, since the addition of the new
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2129) * extent will now cause it to have free inodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2130) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2131) * a careful update approach is used to provide consistency
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2132) * (i.e. list consistency) in the face of updates to multiple
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2133) * buffers. under this approach, all required buffers are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2134) * obtained before making any updates and are held until all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2135) * updates are complete.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2136) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2137) * PRE CONDITION: Already have buffer lock on iagp. Already have AG lock on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2138) * this AG. Must have read lock on imap inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2139) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2140) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2141) * imap - pointer to inode map control structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2142) * iagp - pointer to iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2143) * extno - extent number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2144) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2145) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2146) * 0 - success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2147) * -ENOSPC - insufficient disk resources.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2148) * -EIO - i/o error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2149) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2150) static int diNewExt(struct inomap * imap, struct iag * iagp, int extno)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2152) int agno, iagno, fwd, back, freei = 0, sword, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2153) struct iag *aiagp = NULL, *biagp = NULL, *ciagp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2154) struct metapage *amp, *bmp, *cmp, *dmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2155) struct inode *ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2156) s64 blkno, hint;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2157) int i, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2158) u32 mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2159) ino_t ino;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2160) struct dinode *dp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2161) struct jfs_sb_info *sbi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2163) /* better have free extents.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2164) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2165) if (!iagp->nfreeexts) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2166) jfs_error(imap->im_ipimap->i_sb, "no free extents\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2167) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2168) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2170) /* get the inode map inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2171) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2172) ipimap = imap->im_ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2173) sbi = JFS_SBI(ipimap->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2175) amp = bmp = cmp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2177) /* get the ag and iag numbers for this iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2178) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2179) agno = BLKTOAG(le64_to_cpu(iagp->agstart), sbi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2180) iagno = le32_to_cpu(iagp->iagnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2182) /* check if this is the last free extent within the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2183) * iag. if so, the iag must be removed from the ag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2184) * free extent list, so get the iags preceding and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2185) * following the iag on this list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2186) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2187) if (iagp->nfreeexts == cpu_to_le32(1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2188) if ((fwd = le32_to_cpu(iagp->extfreefwd)) >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2189) if ((rc = diIAGRead(imap, fwd, &)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2190) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2191) aiagp = (struct iag *) amp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2194) if ((back = le32_to_cpu(iagp->extfreeback)) >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2195) if ((rc = diIAGRead(imap, back, &bmp)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2196) goto error_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2197) biagp = (struct iag *) bmp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2199) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2200) /* the iag has free extents. if all extents are free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2201) * (as is the case for a newly allocated iag), the iag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2202) * must be added to the ag free extent list, so get
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2203) * the iag at the head of the list in preparation for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2204) * adding this iag to this list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2205) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2206) fwd = back = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2207) if (iagp->nfreeexts == cpu_to_le32(EXTSPERIAG)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2208) if ((fwd = imap->im_agctl[agno].extfree) >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2209) if ((rc = diIAGRead(imap, fwd, &)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2210) goto error_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2211) aiagp = (struct iag *) amp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2213) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2216) /* check if the iag has no free inodes. if so, the iag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2217) * will have to be added to the ag free inode list, so get
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2218) * the iag at the head of the list in preparation for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2219) * adding this iag to this list. in doing this, we must
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2220) * check if we already have the iag at the head of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2221) * the list in hand.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2222) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2223) if (iagp->nfreeinos == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2224) freei = imap->im_agctl[agno].inofree;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2226) if (freei >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2227) if (freei == fwd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2228) ciagp = aiagp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2229) } else if (freei == back) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2230) ciagp = biagp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2231) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2232) if ((rc = diIAGRead(imap, freei, &cmp)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2233) goto error_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2234) ciagp = (struct iag *) cmp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2236) if (ciagp == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2237) jfs_error(imap->im_ipimap->i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2238) "ciagp == NULL\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2239) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2240) goto error_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2245) /* allocate disk space for the inode extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2246) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2247) if ((extno == 0) || (addressPXD(&iagp->inoext[extno - 1]) == 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2248) hint = ((s64) agno << sbi->bmap->db_agl2size) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2249) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2250) hint = addressPXD(&iagp->inoext[extno - 1]) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2251) lengthPXD(&iagp->inoext[extno - 1]) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2253) if ((rc = dbAlloc(ipimap, hint, (s64) imap->im_nbperiext, &blkno)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2254) goto error_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2256) /* compute the inode number of the first inode within the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2257) * extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2258) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2259) ino = (iagno << L2INOSPERIAG) + (extno << L2INOSPEREXT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2261) /* initialize the inodes within the newly allocated extent a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2262) * page at a time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2263) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2264) for (i = 0; i < imap->im_nbperiext; i += sbi->nbperpage) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2265) /* get a buffer for this page of disk inodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2266) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2267) dmp = get_metapage(ipimap, blkno + i, PSIZE, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2268) if (dmp == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2269) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2270) goto error_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2272) dp = (struct dinode *) dmp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2274) /* initialize the inode number, mode, link count and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2275) * inode extent address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2276) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2277) for (j = 0; j < INOSPERPAGE; j++, dp++, ino++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2278) dp->di_inostamp = cpu_to_le32(sbi->inostamp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2279) dp->di_number = cpu_to_le32(ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2280) dp->di_fileset = cpu_to_le32(FILESYSTEM_I);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2281) dp->di_mode = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2282) dp->di_nlink = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2283) PXDaddress(&(dp->di_ixpxd), blkno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2284) PXDlength(&(dp->di_ixpxd), imap->im_nbperiext);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2286) write_metapage(dmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2289) /* if this is the last free extent within the iag, remove the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2290) * iag from the ag free extent list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2291) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2292) if (iagp->nfreeexts == cpu_to_le32(1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2293) if (fwd >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2294) aiagp->extfreeback = iagp->extfreeback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2296) if (back >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2297) biagp->extfreefwd = iagp->extfreefwd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2298) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2299) imap->im_agctl[agno].extfree =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2300) le32_to_cpu(iagp->extfreefwd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2302) iagp->extfreefwd = iagp->extfreeback = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2303) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2304) /* if the iag has all free extents (newly allocated iag),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2305) * add the iag to the ag free extent list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2306) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2307) if (iagp->nfreeexts == cpu_to_le32(EXTSPERIAG)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2308) if (fwd >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2309) aiagp->extfreeback = cpu_to_le32(iagno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2311) iagp->extfreefwd = cpu_to_le32(fwd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2312) iagp->extfreeback = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2313) imap->im_agctl[agno].extfree = iagno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2315) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2317) /* if the iag has no free inodes, add the iag to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2318) * ag free inode list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2319) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2320) if (iagp->nfreeinos == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2321) if (freei >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2322) ciagp->inofreeback = cpu_to_le32(iagno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2324) iagp->inofreefwd =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2325) cpu_to_le32(imap->im_agctl[agno].inofree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2326) iagp->inofreeback = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2327) imap->im_agctl[agno].inofree = iagno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2328) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2330) /* initialize the extent descriptor of the extent. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2331) PXDlength(&iagp->inoext[extno], imap->im_nbperiext);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2332) PXDaddress(&iagp->inoext[extno], blkno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2334) /* initialize the working and persistent map of the extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2335) * the working map will be initialized such that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2336) * it indicates the first inode of the extent is allocated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2337) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2338) iagp->wmap[extno] = cpu_to_le32(HIGHORDER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2339) iagp->pmap[extno] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2341) /* update the free inode and free extent summary maps
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2342) * for the extent to indicate the extent has free inodes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2343) * and no longer represents a free extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2344) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2345) sword = extno >> L2EXTSPERSUM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2346) mask = HIGHORDER >> (extno & (EXTSPERSUM - 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2347) iagp->extsmap[sword] |= cpu_to_le32(mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2348) iagp->inosmap[sword] &= cpu_to_le32(~mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2350) /* update the free inode and free extent counts for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2351) * iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2352) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2353) le32_add_cpu(&iagp->nfreeinos, (INOSPEREXT - 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2354) le32_add_cpu(&iagp->nfreeexts, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2356) /* update the free and backed inode counts for the ag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2357) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2358) imap->im_agctl[agno].numfree += (INOSPEREXT - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2359) imap->im_agctl[agno].numinos += INOSPEREXT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2361) /* update the free and backed inode counts for the inode map.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2362) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2363) atomic_add(INOSPEREXT - 1, &imap->im_numfree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2364) atomic_add(INOSPEREXT, &imap->im_numinos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2366) /* write the iags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2367) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2368) if (amp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2369) write_metapage(amp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2370) if (bmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2371) write_metapage(bmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2372) if (cmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2373) write_metapage(cmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2375) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2377) error_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2379) /* release the iags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2380) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2381) if (amp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2382) release_metapage(amp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2383) if (bmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2384) release_metapage(bmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2385) if (cmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2386) release_metapage(cmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2388) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2389) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2392) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2393) * NAME: diNewIAG(imap,iagnop,agno)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2394) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2395) * FUNCTION: allocate a new iag for an allocation group.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2396) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2397) * first tries to allocate the iag from the inode map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2398) * iagfree list:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2399) * if the list has free iags, the head of the list is removed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2400) * and returned to satisfy the request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2401) * if the inode map's iag free list is empty, the inode map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2402) * is extended to hold a new iag. this new iag is initialized
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2403) * and returned to satisfy the request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2404) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2405) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2406) * imap - pointer to inode map control structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2407) * iagnop - pointer to an iag number set with the number of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2408) * newly allocated iag upon successful return.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2409) * agno - allocation group number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2410) * bpp - Buffer pointer to be filled in with new IAG's buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2411) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2412) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2413) * 0 - success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2414) * -ENOSPC - insufficient disk resources.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2415) * -EIO - i/o error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2416) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2417) * serialization:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2418) * AG lock held on entry/exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2419) * write lock on the map is held inside;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2420) * read lock on the map is held on successful completion;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2421) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2422) * note: new iag transaction:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2423) * . synchronously write iag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2424) * . write log of xtree and inode of imap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2425) * . commit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2426) * . synchronous write of xtree (right to left, bottom to top);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2427) * . at start of logredo(): init in-memory imap with one additional iag page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2428) * . at end of logredo(): re-read imap inode to determine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2429) * new imap size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2430) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2431) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2432) diNewIAG(struct inomap * imap, int *iagnop, int agno, struct metapage ** mpp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2433) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2434) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2435) int iagno, i, xlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2436) struct inode *ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2437) struct super_block *sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2438) struct jfs_sb_info *sbi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2439) struct metapage *mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2440) struct iag *iagp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2441) s64 xaddr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2442) s64 blkno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2443) tid_t tid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2444) struct inode *iplist[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2446) /* pick up pointers to the inode map and mount inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2447) ipimap = imap->im_ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2448) sb = ipimap->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2449) sbi = JFS_SBI(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2451) /* acquire the free iag lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2452) IAGFREE_LOCK(imap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2454) /* if there are any iags on the inode map free iag list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2455) * allocate the iag from the head of the list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2456) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2457) if (imap->im_freeiag >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2458) /* pick up the iag number at the head of the list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2459) iagno = imap->im_freeiag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2461) /* determine the logical block number of the iag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2462) blkno = IAGTOLBLK(iagno, sbi->l2nbperpage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2463) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2464) /* no free iags. the inode map will have to be extented
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2465) * to include a new iag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2466) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2468) /* acquire inode map lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2469) IWRITE_LOCK(ipimap, RDWRLOCK_IMAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2471) if (ipimap->i_size >> L2PSIZE != imap->im_nextiag + 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2472) IWRITE_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2473) IAGFREE_UNLOCK(imap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2474) jfs_error(imap->im_ipimap->i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2475) "ipimap->i_size is wrong\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2476) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2480) /* get the next available iag number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2481) iagno = imap->im_nextiag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2483) /* make sure that we have not exceeded the maximum inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2484) * number limit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2485) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2486) if (iagno > (MAXIAGS - 1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2487) /* release the inode map lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2488) IWRITE_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2490) rc = -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2491) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2492) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2494) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2495) * synchronously append new iag page.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2496) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2497) /* determine the logical address of iag page to append */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2498) blkno = IAGTOLBLK(iagno, sbi->l2nbperpage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2500) /* Allocate extent for new iag page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2501) xlen = sbi->nbperpage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2502) if ((rc = dbAlloc(ipimap, 0, (s64) xlen, &xaddr))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2503) /* release the inode map lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2504) IWRITE_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2506) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2509) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2510) * start transaction of update of the inode map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2511) * addressing structure pointing to the new iag page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2512) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2513) tid = txBegin(sb, COMMIT_FORCE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2514) mutex_lock(&JFS_IP(ipimap)->commit_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2516) /* update the inode map addressing structure to point to it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2517) if ((rc =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2518) xtInsert(tid, ipimap, 0, blkno, xlen, &xaddr, 0))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2519) txEnd(tid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2520) mutex_unlock(&JFS_IP(ipimap)->commit_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2521) /* Free the blocks allocated for the iag since it was
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2522) * not successfully added to the inode map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2523) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2524) dbFree(ipimap, xaddr, (s64) xlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2526) /* release the inode map lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2527) IWRITE_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2529) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2530) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2532) /* update the inode map's inode to reflect the extension */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2533) ipimap->i_size += PSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2534) inode_add_bytes(ipimap, PSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2536) /* assign a buffer for the page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2537) mp = get_metapage(ipimap, blkno, PSIZE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2538) if (!mp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2539) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2540) * This is very unlikely since we just created the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2541) * extent, but let's try to handle it correctly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2542) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2543) xtTruncate(tid, ipimap, ipimap->i_size - PSIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2544) COMMIT_PWMAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2546) txAbort(tid, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2547) txEnd(tid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2548) mutex_unlock(&JFS_IP(ipimap)->commit_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2550) /* release the inode map lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2551) IWRITE_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2553) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2554) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2556) iagp = (struct iag *) mp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2558) /* init the iag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2559) memset(iagp, 0, sizeof(struct iag));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2560) iagp->iagnum = cpu_to_le32(iagno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2561) iagp->inofreefwd = iagp->inofreeback = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2562) iagp->extfreefwd = iagp->extfreeback = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2563) iagp->iagfree = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2564) iagp->nfreeinos = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2565) iagp->nfreeexts = cpu_to_le32(EXTSPERIAG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2567) /* initialize the free inode summary map (free extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2568) * summary map initialization handled by bzero).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2569) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2570) for (i = 0; i < SMAPSZ; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2571) iagp->inosmap[i] = cpu_to_le32(ONES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2573) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2574) * Write and sync the metapage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2575) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2576) flush_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2578) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2579) * txCommit(COMMIT_FORCE) will synchronously write address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2580) * index pages and inode after commit in careful update order
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2581) * of address index pages (right to left, bottom up);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2582) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2583) iplist[0] = ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2584) rc = txCommit(tid, 1, &iplist[0], COMMIT_FORCE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2586) txEnd(tid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2587) mutex_unlock(&JFS_IP(ipimap)->commit_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2589) duplicateIXtree(sb, blkno, xlen, &xaddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2591) /* update the next available iag number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2592) imap->im_nextiag += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2594) /* Add the iag to the iag free list so we don't lose the iag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2595) * if a failure happens now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2596) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2597) imap->im_freeiag = iagno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2599) /* Until we have logredo working, we want the imap inode &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2600) * control page to be up to date.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2601) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2602) diSync(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2604) /* release the inode map lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2605) IWRITE_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2606) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2608) /* obtain read lock on map */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2609) IREAD_LOCK(ipimap, RDWRLOCK_IMAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2611) /* read the iag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2612) if ((rc = diIAGRead(imap, iagno, &mp))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2613) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2614) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2615) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2616) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2617) iagp = (struct iag *) mp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2619) /* remove the iag from the iag free list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2620) imap->im_freeiag = le32_to_cpu(iagp->iagfree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2621) iagp->iagfree = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2623) /* set the return iag number and buffer pointer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2624) *iagnop = iagno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2625) *mpp = mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2627) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2628) /* release the iag free lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2629) IAGFREE_UNLOCK(imap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2631) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2632) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2634) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2635) * NAME: diIAGRead()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2636) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2637) * FUNCTION: get the buffer for the specified iag within a fileset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2638) * or aggregate inode map.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2639) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2640) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2641) * imap - pointer to inode map control structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2642) * iagno - iag number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2643) * bpp - point to buffer pointer to be filled in on successful
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2644) * exit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2645) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2646) * SERIALIZATION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2647) * must have read lock on imap inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2648) * (When called by diExtendFS, the filesystem is quiesced, therefore
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2649) * the read lock is unnecessary.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2650) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2651) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2652) * 0 - success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2653) * -EIO - i/o error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2654) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2655) static int diIAGRead(struct inomap * imap, int iagno, struct metapage ** mpp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2656) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2657) struct inode *ipimap = imap->im_ipimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2658) s64 blkno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2660) /* compute the logical block number of the iag. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2661) blkno = IAGTOLBLK(iagno, JFS_SBI(ipimap->i_sb)->l2nbperpage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2663) /* read the iag. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2664) *mpp = read_metapage(ipimap, blkno, PSIZE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2665) if (*mpp == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2666) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2667) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2669) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2670) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2672) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2673) * NAME: diFindFree()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2674) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2675) * FUNCTION: find the first free bit in a word starting at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2676) * the specified bit position.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2677) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2678) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2679) * word - word to be examined.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2680) * start - starting bit position.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2681) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2682) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2683) * bit position of first free bit in the word or 32 if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2684) * no free bits were found.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2685) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2686) static int diFindFree(u32 word, int start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2687) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2688) int bitno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2689) assert(start < 32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2690) /* scan the word for the first free bit. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2691) for (word <<= start, bitno = start; bitno < 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2692) bitno++, word <<= 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2693) if ((word & HIGHORDER) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2694) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2695) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2696) return (bitno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2697) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2699) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2700) * NAME: diUpdatePMap()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2701) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2702) * FUNCTION: Update the persistent map in an IAG for the allocation or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2703) * freeing of the specified inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2704) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2705) * PRE CONDITIONS: Working map has already been updated for allocate.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2706) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2707) * PARAMETERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2708) * ipimap - Incore inode map inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2709) * inum - Number of inode to mark in permanent map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2710) * is_free - If 'true' indicates inode should be marked freed, otherwise
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2711) * indicates inode should be marked allocated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2712) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2713) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2714) * 0 for success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2715) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2716) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2717) diUpdatePMap(struct inode *ipimap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2718) unsigned long inum, bool is_free, struct tblock * tblk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2719) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2720) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2721) struct iag *iagp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2722) struct metapage *mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2723) int iagno, ino, extno, bitno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2724) struct inomap *imap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2725) u32 mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2726) struct jfs_log *log;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2727) int lsn, difft, diffp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2728) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2730) imap = JFS_IP(ipimap)->i_imap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2731) /* get the iag number containing the inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2732) iagno = INOTOIAG(inum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2733) /* make sure that the iag is contained within the map */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2734) if (iagno >= imap->im_nextiag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2735) jfs_error(ipimap->i_sb, "the iag is outside the map\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2736) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2737) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2738) /* read the iag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2739) IREAD_LOCK(ipimap, RDWRLOCK_IMAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2740) rc = diIAGRead(imap, iagno, &mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2741) IREAD_UNLOCK(ipimap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2742) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2743) return (rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2744) metapage_wait_for_io(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2745) iagp = (struct iag *) mp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2746) /* get the inode number and extent number of the inode within
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2747) * the iag and the inode number within the extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2748) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2749) ino = inum & (INOSPERIAG - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2750) extno = ino >> L2INOSPEREXT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2751) bitno = ino & (INOSPEREXT - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2752) mask = HIGHORDER >> bitno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2753) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2754) * mark the inode free in persistent map:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2755) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2756) if (is_free) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2757) /* The inode should have been allocated both in working
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2758) * map and in persistent map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2759) * the inode will be freed from working map at the release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2760) * of last reference release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2761) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2762) if (!(le32_to_cpu(iagp->wmap[extno]) & mask)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2763) jfs_error(ipimap->i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2764) "inode %ld not marked as allocated in wmap!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2765) inum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2766) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2767) if (!(le32_to_cpu(iagp->pmap[extno]) & mask)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2768) jfs_error(ipimap->i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2769) "inode %ld not marked as allocated in pmap!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2770) inum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2771) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2772) /* update the bitmap for the extent of the freed inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2773) iagp->pmap[extno] &= cpu_to_le32(~mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2774) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2775) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2776) * mark the inode allocated in persistent map:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2777) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2778) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2779) /* The inode should be already allocated in the working map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2780) * and should be free in persistent map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2781) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2782) if (!(le32_to_cpu(iagp->wmap[extno]) & mask)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2783) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2784) jfs_error(ipimap->i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2785) "the inode is not allocated in the working map\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2786) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2787) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2788) if ((le32_to_cpu(iagp->pmap[extno]) & mask) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2789) release_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2790) jfs_error(ipimap->i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2791) "the inode is not free in the persistent map\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2792) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2793) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2794) /* update the bitmap for the extent of the allocated inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2795) iagp->pmap[extno] |= cpu_to_le32(mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2796) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2797) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2798) * update iag lsn
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2799) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2800) lsn = tblk->lsn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2801) log = JFS_SBI(tblk->sb)->log;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2802) LOGSYNC_LOCK(log, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2803) if (mp->lsn != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2804) /* inherit older/smaller lsn */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2805) logdiff(difft, lsn, log);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2806) logdiff(diffp, mp->lsn, log);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2807) if (difft < diffp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2808) mp->lsn = lsn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2809) /* move mp after tblock in logsync list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2810) list_move(&mp->synclist, &tblk->synclist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2811) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2812) /* inherit younger/larger clsn */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2813) assert(mp->clsn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2814) logdiff(difft, tblk->clsn, log);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2815) logdiff(diffp, mp->clsn, log);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2816) if (difft > diffp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2817) mp->clsn = tblk->clsn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2818) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2819) mp->log = log;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2820) mp->lsn = lsn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2821) /* insert mp after tblock in logsync list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2822) log->count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2823) list_add(&mp->synclist, &tblk->synclist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2824) mp->clsn = tblk->clsn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2825) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2826) LOGSYNC_UNLOCK(log, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2827) write_metapage(mp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2828) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2829) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2831) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2832) * diExtendFS()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2833) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2834) * function: update imap for extendfs();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2835) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2836) * note: AG size has been increased s.t. each k old contiguous AGs are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2837) * coalesced into a new AG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2838) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2839) int diExtendFS(struct inode *ipimap, struct inode *ipbmap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2840) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2841) int rc, rcx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2842) struct inomap *imap = JFS_IP(ipimap)->i_imap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2843) struct iag *iagp = NULL, *hiagp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2844) struct bmap *mp = JFS_SBI(ipbmap->i_sb)->bmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2845) struct metapage *bp, *hbp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2846) int i, n, head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2847) int numinos, xnuminos = 0, xnumfree = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2848) s64 agstart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2850) jfs_info("diExtendFS: nextiag:%d numinos:%d numfree:%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2851) imap->im_nextiag, atomic_read(&imap->im_numinos),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2852) atomic_read(&imap->im_numfree));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2854) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2855) * reconstruct imap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2856) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2857) * coalesce contiguous k (newAGSize/oldAGSize) AGs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2858) * i.e., (AGi, ..., AGj) where i = k*n and j = k*(n+1) - 1 to AGn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2859) * note: new AG size = old AG size * (2**x).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2860) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2862) /* init per AG control information im_agctl[] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2863) for (i = 0; i < MAXAG; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2864) imap->im_agctl[i].inofree = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2865) imap->im_agctl[i].extfree = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2866) imap->im_agctl[i].numinos = 0; /* number of backed inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2867) imap->im_agctl[i].numfree = 0; /* number of free backed inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2868) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2869)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2870) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2871) * process each iag page of the map.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2872) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2873) * rebuild AG Free Inode List, AG Free Inode Extent List;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2874) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2875) for (i = 0; i < imap->im_nextiag; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2876) if ((rc = diIAGRead(imap, i, &bp))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2877) rcx = rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2878) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2879) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2880) iagp = (struct iag *) bp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2881) if (le32_to_cpu(iagp->iagnum) != i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2882) release_metapage(bp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2883) jfs_error(ipimap->i_sb, "unexpected value of iagnum\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2884) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2885) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2887) /* leave free iag in the free iag list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2888) if (iagp->nfreeexts == cpu_to_le32(EXTSPERIAG)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2889) release_metapage(bp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2890) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2891) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2893) agstart = le64_to_cpu(iagp->agstart);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2894) n = agstart >> mp->db_agl2size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2895) iagp->agstart = cpu_to_le64((s64)n << mp->db_agl2size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2896)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2897) /* compute backed inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2898) numinos = (EXTSPERIAG - le32_to_cpu(iagp->nfreeexts))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2899) << L2INOSPEREXT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2900) if (numinos > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2901) /* merge AG backed inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2902) imap->im_agctl[n].numinos += numinos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2903) xnuminos += numinos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2904) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2905)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2906) /* if any backed free inodes, insert at AG free inode list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2907) if ((int) le32_to_cpu(iagp->nfreeinos) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2908) if ((head = imap->im_agctl[n].inofree) == -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2909) iagp->inofreefwd = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2910) iagp->inofreeback = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2911) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2912) if ((rc = diIAGRead(imap, head, &hbp))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2913) rcx = rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2914) goto nextiag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2915) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2916) hiagp = (struct iag *) hbp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2917) hiagp->inofreeback = iagp->iagnum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2918) iagp->inofreefwd = cpu_to_le32(head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2919) iagp->inofreeback = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2920) write_metapage(hbp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2921) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2922)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2923) imap->im_agctl[n].inofree =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2924) le32_to_cpu(iagp->iagnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2925)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2926) /* merge AG backed free inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2927) imap->im_agctl[n].numfree +=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2928) le32_to_cpu(iagp->nfreeinos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2929) xnumfree += le32_to_cpu(iagp->nfreeinos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2930) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2932) /* if any free extents, insert at AG free extent list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2933) if (le32_to_cpu(iagp->nfreeexts) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2934) if ((head = imap->im_agctl[n].extfree) == -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2935) iagp->extfreefwd = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2936) iagp->extfreeback = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2937) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2938) if ((rc = diIAGRead(imap, head, &hbp))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2939) rcx = rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2940) goto nextiag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2941) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2942) hiagp = (struct iag *) hbp->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2943) hiagp->extfreeback = iagp->iagnum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2944) iagp->extfreefwd = cpu_to_le32(head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2945) iagp->extfreeback = cpu_to_le32(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2946) write_metapage(hbp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2947) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2949) imap->im_agctl[n].extfree =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2950) le32_to_cpu(iagp->iagnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2951) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2952)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2953) nextiag:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2954) write_metapage(bp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2955) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2956)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2957) if (xnuminos != atomic_read(&imap->im_numinos) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2958) xnumfree != atomic_read(&imap->im_numfree)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2959) jfs_error(ipimap->i_sb, "numinos or numfree incorrect\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2960) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2961) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2962)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2963) return rcx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2964) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2965)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2966)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2967) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2968) * duplicateIXtree()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2969) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2970) * serialization: IWRITE_LOCK held on entry/exit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2971) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2972) * note: shadow page with regular inode (rel.2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2973) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2974) static void duplicateIXtree(struct super_block *sb, s64 blkno,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2975) int xlen, s64 *xaddr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2976) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2977) struct jfs_superblock *j_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2978) struct buffer_head *bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2979) struct inode *ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2980) tid_t tid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2982) /* if AIT2 ipmap2 is bad, do not try to update it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2983) if (JFS_SBI(sb)->mntflag & JFS_BAD_SAIT) /* s_flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2984) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2985) ip = diReadSpecial(sb, FILESYSTEM_I, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2986) if (ip == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2987) JFS_SBI(sb)->mntflag |= JFS_BAD_SAIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2988) if (readSuper(sb, &bh))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2989) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2990) j_sb = (struct jfs_superblock *)bh->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2991) j_sb->s_flag |= cpu_to_le32(JFS_BAD_SAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2992)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2993) mark_buffer_dirty(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2994) sync_dirty_buffer(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2995) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2996) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2997) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2998)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2999) /* start transaction */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3000) tid = txBegin(sb, COMMIT_FORCE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3001) /* update the inode map addressing structure to point to it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3002) if (xtInsert(tid, ip, 0, blkno, xlen, xaddr, 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3003) JFS_SBI(sb)->mntflag |= JFS_BAD_SAIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3004) txAbort(tid, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3005) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3007) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3008) /* update the inode map's inode to reflect the extension */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3009) ip->i_size += PSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3010) inode_add_bytes(ip, PSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3011) txCommit(tid, 1, &ip, COMMIT_FORCE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3012) cleanup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3013) txEnd(tid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3014) diFreeSpecial(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3015) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3016)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3017) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3018) * NAME: copy_from_dinode()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3019) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3020) * FUNCTION: Copies inode info from disk inode to in-memory inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3021) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3022) * RETURN VALUES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3023) * 0 - success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3024) * -ENOMEM - insufficient memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3025) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3026) static int copy_from_dinode(struct dinode * dip, struct inode *ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3027) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3028) struct jfs_inode_info *jfs_ip = JFS_IP(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3029) struct jfs_sb_info *sbi = JFS_SBI(ip->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3030)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3031) jfs_ip->fileset = le32_to_cpu(dip->di_fileset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3032) jfs_ip->mode2 = le32_to_cpu(dip->di_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3033) jfs_set_inode_flags(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3034)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3035) ip->i_mode = le32_to_cpu(dip->di_mode) & 0xffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3036) if (sbi->umask != -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3037) ip->i_mode = (ip->i_mode & ~0777) | (0777 & ~sbi->umask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3038) /* For directories, add x permission if r is allowed by umask */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3039) if (S_ISDIR(ip->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3040) if (ip->i_mode & 0400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3041) ip->i_mode |= 0100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3042) if (ip->i_mode & 0040)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3043) ip->i_mode |= 0010;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3044) if (ip->i_mode & 0004)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3045) ip->i_mode |= 0001;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3046) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3047) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3048) set_nlink(ip, le32_to_cpu(dip->di_nlink));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3049)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3050) jfs_ip->saved_uid = make_kuid(&init_user_ns, le32_to_cpu(dip->di_uid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3051) if (!uid_valid(sbi->uid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3052) ip->i_uid = jfs_ip->saved_uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3053) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3054) ip->i_uid = sbi->uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3055) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3056)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3057) jfs_ip->saved_gid = make_kgid(&init_user_ns, le32_to_cpu(dip->di_gid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3058) if (!gid_valid(sbi->gid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3059) ip->i_gid = jfs_ip->saved_gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3060) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3061) ip->i_gid = sbi->gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3062) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3063)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3064) ip->i_size = le64_to_cpu(dip->di_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3065) ip->i_atime.tv_sec = le32_to_cpu(dip->di_atime.tv_sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3066) ip->i_atime.tv_nsec = le32_to_cpu(dip->di_atime.tv_nsec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3067) ip->i_mtime.tv_sec = le32_to_cpu(dip->di_mtime.tv_sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3068) ip->i_mtime.tv_nsec = le32_to_cpu(dip->di_mtime.tv_nsec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3069) ip->i_ctime.tv_sec = le32_to_cpu(dip->di_ctime.tv_sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3070) ip->i_ctime.tv_nsec = le32_to_cpu(dip->di_ctime.tv_nsec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3071) ip->i_blocks = LBLK2PBLK(ip->i_sb, le64_to_cpu(dip->di_nblocks));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3072) ip->i_generation = le32_to_cpu(dip->di_gen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3073)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3074) jfs_ip->ixpxd = dip->di_ixpxd; /* in-memory pxd's are little-endian */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3075) jfs_ip->acl = dip->di_acl; /* as are dxd's */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3076) jfs_ip->ea = dip->di_ea;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3077) jfs_ip->next_index = le32_to_cpu(dip->di_next_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3078) jfs_ip->otime = le32_to_cpu(dip->di_otime.tv_sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3079) jfs_ip->acltype = le32_to_cpu(dip->di_acltype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3080)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3081) if (S_ISCHR(ip->i_mode) || S_ISBLK(ip->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3082) jfs_ip->dev = le32_to_cpu(dip->di_rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3083) ip->i_rdev = new_decode_dev(jfs_ip->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3084) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3085)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3086) if (S_ISDIR(ip->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3087) memcpy(&jfs_ip->i_dirtable, &dip->di_dirtable, 384);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3088) } else if (S_ISREG(ip->i_mode) || S_ISLNK(ip->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3089) memcpy(&jfs_ip->i_xtroot, &dip->di_xtroot, 288);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3090) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3091) memcpy(&jfs_ip->i_inline_ea, &dip->di_inlineea, 128);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3092)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3093) /* Zero the in-memory-only stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3094) jfs_ip->cflag = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3095) jfs_ip->btindex = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3096) jfs_ip->btorder = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3097) jfs_ip->bxflag = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3098) jfs_ip->blid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3099) jfs_ip->atlhead = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3100) jfs_ip->atltail = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3101) jfs_ip->xtlid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3102) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3105) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3106) * NAME: copy_to_dinode()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3107) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3108) * FUNCTION: Copies inode info from in-memory inode to disk inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3109) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3110) static void copy_to_dinode(struct dinode * dip, struct inode *ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3112) struct jfs_inode_info *jfs_ip = JFS_IP(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3113) struct jfs_sb_info *sbi = JFS_SBI(ip->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3115) dip->di_fileset = cpu_to_le32(jfs_ip->fileset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3116) dip->di_inostamp = cpu_to_le32(sbi->inostamp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3117) dip->di_number = cpu_to_le32(ip->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3118) dip->di_gen = cpu_to_le32(ip->i_generation);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3119) dip->di_size = cpu_to_le64(ip->i_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3120) dip->di_nblocks = cpu_to_le64(PBLK2LBLK(ip->i_sb, ip->i_blocks));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3121) dip->di_nlink = cpu_to_le32(ip->i_nlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3122) if (!uid_valid(sbi->uid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3123) dip->di_uid = cpu_to_le32(i_uid_read(ip));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3124) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3125) dip->di_uid =cpu_to_le32(from_kuid(&init_user_ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3126) jfs_ip->saved_uid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3127) if (!gid_valid(sbi->gid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3128) dip->di_gid = cpu_to_le32(i_gid_read(ip));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3129) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3130) dip->di_gid = cpu_to_le32(from_kgid(&init_user_ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3131) jfs_ip->saved_gid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3132) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3133) * mode2 is only needed for storing the higher order bits.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3134) * Trust i_mode for the lower order ones
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3135) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3136) if (sbi->umask == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3137) dip->di_mode = cpu_to_le32((jfs_ip->mode2 & 0xffff0000) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3138) ip->i_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3139) else /* Leave the original permissions alone */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3140) dip->di_mode = cpu_to_le32(jfs_ip->mode2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3142) dip->di_atime.tv_sec = cpu_to_le32(ip->i_atime.tv_sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3143) dip->di_atime.tv_nsec = cpu_to_le32(ip->i_atime.tv_nsec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3144) dip->di_ctime.tv_sec = cpu_to_le32(ip->i_ctime.tv_sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3145) dip->di_ctime.tv_nsec = cpu_to_le32(ip->i_ctime.tv_nsec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3146) dip->di_mtime.tv_sec = cpu_to_le32(ip->i_mtime.tv_sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3147) dip->di_mtime.tv_nsec = cpu_to_le32(ip->i_mtime.tv_nsec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3148) dip->di_ixpxd = jfs_ip->ixpxd; /* in-memory pxd's are little-endian */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3149) dip->di_acl = jfs_ip->acl; /* as are dxd's */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3150) dip->di_ea = jfs_ip->ea;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3151) dip->di_next_index = cpu_to_le32(jfs_ip->next_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3152) dip->di_otime.tv_sec = cpu_to_le32(jfs_ip->otime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3153) dip->di_otime.tv_nsec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3154) dip->di_acltype = cpu_to_le32(jfs_ip->acltype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3155) if (S_ISCHR(ip->i_mode) || S_ISBLK(ip->i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3156) dip->di_rdev = cpu_to_le32(jfs_ip->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3157) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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