^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., 2000-2002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #ifndef _H_JFS_IMAP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #define _H_JFS_IMAP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include "jfs_txnmgr.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * jfs_imap.h: disk inode manager
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define EXTSPERIAG 128 /* number of disk inode extent per iag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define IMAPBLKNO 0 /* lblkno of dinomap within inode map */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define SMAPSZ 4 /* number of words per summary map */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define EXTSPERSUM 32 /* number of extents per summary map entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define L2EXTSPERSUM 5 /* l2 number of extents per summary map */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define PGSPERIEXT 4 /* number of 4K pages per dinode extent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define MAXIAGS ((1<<20)-1) /* maximum number of iags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define MAXAG 128 /* maximum number of allocation groups */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define AMAPSIZE 512 /* bytes in the IAG allocation maps */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define SMAPSIZE 16 /* bytes in the IAG summary maps */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /* convert inode number to iag number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define INOTOIAG(ino) ((ino) >> L2INOSPERIAG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /* convert iag number to logical block number of the iag page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define IAGTOLBLK(iagno,l2nbperpg) (((iagno) + 1) << (l2nbperpg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /* get the starting block number of the 4K page of an inode extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * that contains ino.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define INOPBLK(pxd,ino,l2nbperpg) (addressPXD((pxd)) + \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) ((((ino) & (INOSPEREXT-1)) >> L2INOSPERPAGE) << (l2nbperpg)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * inode allocation map:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * inode allocation map consists of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * . the inode map control page and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * . inode allocation group pages (per 4096 inodes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * which are addressed by standard JFS xtree.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * inode allocation group page (per 4096 inodes of an AG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct iag {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) __le64 agstart; /* 8: starting block of ag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) __le32 iagnum; /* 4: inode allocation group number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) __le32 inofreefwd; /* 4: ag inode free list forward */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) __le32 inofreeback; /* 4: ag inode free list back */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) __le32 extfreefwd; /* 4: ag inode extent free list forward */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) __le32 extfreeback; /* 4: ag inode extent free list back */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) __le32 iagfree; /* 4: iag free list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /* summary map: 1 bit per inode extent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) __le32 inosmap[SMAPSZ]; /* 16: sum map of mapwords w/ free inodes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * note: this indicates free and backed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * inodes, if the extent is not backed the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * value will be 1. if the extent is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * backed but all inodes are being used the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * value will be 1. if the extent is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * backed but at least one of the inodes is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * free the value will be 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) __le32 extsmap[SMAPSZ]; /* 16: sum map of mapwords w/ free extents */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) __le32 nfreeinos; /* 4: number of free inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) __le32 nfreeexts; /* 4: number of free extents */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /* (72) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) u8 pad[1976]; /* 1976: pad to 2048 bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /* allocation bit map: 1 bit per inode (0 - free, 1 - allocated) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) __le32 wmap[EXTSPERIAG]; /* 512: working allocation map */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) __le32 pmap[EXTSPERIAG]; /* 512: persistent allocation map */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) pxd_t inoext[EXTSPERIAG]; /* 1024: inode extent addresses */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }; /* (4096) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * per AG control information (in inode map control page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct iagctl_disk {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) __le32 inofree; /* 4: free inode list anchor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) __le32 extfree; /* 4: free extent list anchor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) __le32 numinos; /* 4: number of backed inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) __le32 numfree; /* 4: number of free inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }; /* (16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) struct iagctl {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) int inofree; /* free inode list anchor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) int extfree; /* free extent list anchor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) int numinos; /* number of backed inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) int numfree; /* number of free inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * per fileset/aggregate inode map control page
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct dinomap_disk {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) __le32 in_freeiag; /* 4: free iag list anchor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) __le32 in_nextiag; /* 4: next free iag number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) __le32 in_numinos; /* 4: num of backed inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) __le32 in_numfree; /* 4: num of free backed inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) __le32 in_nbperiext; /* 4: num of blocks per inode extent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) __le32 in_l2nbperiext; /* 4: l2 of in_nbperiext */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) __le32 in_diskblock; /* 4: for standalone test driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) __le32 in_maxag; /* 4: for standalone test driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) u8 pad[2016]; /* 2016: pad to 2048 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct iagctl_disk in_agctl[MAXAG]; /* 2048: AG control information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }; /* (4096) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct dinomap {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) int in_freeiag; /* free iag list anchor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) int in_nextiag; /* next free iag number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) int in_numinos; /* num of backed inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) int in_numfree; /* num of free backed inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) int in_nbperiext; /* num of blocks per inode extent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) int in_l2nbperiext; /* l2 of in_nbperiext */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) int in_diskblock; /* for standalone test driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) int in_maxag; /* for standalone test driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct iagctl in_agctl[MAXAG]; /* AG control information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * In-core inode map control page
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct inomap {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct dinomap im_imap; /* 4096: inode allocation control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct inode *im_ipimap; /* 4: ptr to inode for imap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct mutex im_freelock; /* 4: iag free list lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct mutex im_aglock[MAXAG]; /* 512: per AG locks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) u32 *im_DBGdimap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) atomic_t im_numinos; /* num of backed inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) atomic_t im_numfree; /* num of free backed inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) #define im_freeiag im_imap.in_freeiag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) #define im_nextiag im_imap.in_nextiag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) #define im_agctl im_imap.in_agctl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) #define im_nbperiext im_imap.in_nbperiext
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) #define im_l2nbperiext im_imap.in_l2nbperiext
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) /* for standalone testdriver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) #define im_diskblock im_imap.in_diskblock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) #define im_maxag im_imap.in_maxag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) extern int diFree(struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) extern int diAlloc(struct inode *, bool, struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) extern int diSync(struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) /* external references */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) extern int diUpdatePMap(struct inode *ipimap, unsigned long inum,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) bool is_free, struct tblock * tblk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) extern int diExtendFS(struct inode *ipimap, struct inode *ipbmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) extern int diMount(struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) extern int diUnmount(struct inode *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) extern int diRead(struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) extern struct inode *diReadSpecial(struct super_block *, ino_t, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) extern void diWriteSpecial(struct inode *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) extern void diFreeSpecial(struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) extern int diWrite(tid_t tid, struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) #endif /* _H_JFS_IMAP */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags