^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (c) 2000-2006 Silicon Graphics, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (c) 2012 Red Hat, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * All Rights Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include "xfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include "xfs_fs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include "xfs_shared.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "xfs_format.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "xfs_log_format.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "xfs_trans_resv.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "xfs_bit.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "xfs_mount.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include "xfs_defer.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "xfs_inode.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "xfs_btree.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "xfs_trans.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "xfs_alloc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "xfs_bmap.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "xfs_bmap_util.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "xfs_bmap_btree.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "xfs_rtalloc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "xfs_error.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "xfs_quota.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include "xfs_trans_space.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include "xfs_trace.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include "xfs_icache.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include "xfs_iomap.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include "xfs_reflink.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /* Kernel only BMAP related definitions and functions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * Convert the given file system block to a disk block. We have to treat it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * differently based on whether the file is a real time file or not, because the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * bmap code does.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) xfs_daddr_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) if (XFS_IS_REALTIME_INODE(ip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return XFS_FSB_TO_BB(ip->i_mount, fsb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) return XFS_FSB_TO_DADDR(ip->i_mount, fsb);
^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * Routine to zero an extent on disk allocated to the specific inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * The VFS functions take a linearised filesystem block offset, so we have to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * convert the sparse xfs fsb to the right format first.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * VFS types are real funky, too.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) xfs_zero_extent(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) xfs_fsblock_t start_fsb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) xfs_off_t count_fsb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct xfs_mount *mp = ip->i_mount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct xfs_buftarg *target = xfs_inode_buftarg(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) xfs_daddr_t sector = xfs_fsb_to_db(ip, start_fsb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) sector_t block = XFS_BB_TO_FSBT(mp, sector);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return blkdev_issue_zeroout(target->bt_bdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) block << (mp->m_super->s_blocksize_bits - 9),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) count_fsb << (mp->m_super->s_blocksize_bits - 9),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) GFP_NOFS, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #ifdef CONFIG_XFS_RT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) xfs_bmap_rtalloc(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct xfs_bmalloca *ap) /* bmap alloc argument struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) int error; /* error return value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) xfs_mount_t *mp; /* mount point structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) xfs_extlen_t prod = 0; /* product factor for allocators */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) xfs_extlen_t mod = 0; /* product factor for allocators */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) xfs_extlen_t ralen = 0; /* realtime allocation length */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) xfs_extlen_t align; /* minimum allocation alignment */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) xfs_rtblock_t rtb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) mp = ap->ip->i_mount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) align = xfs_get_extsz_hint(ap->ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) prod = align / mp->m_sb.sb_rextsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) error = xfs_bmap_extsize_align(mp, &ap->got, &ap->prev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) align, 1, ap->eof, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) ap->conv, &ap->offset, &ap->length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) ASSERT(ap->length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) ASSERT(ap->length % mp->m_sb.sb_rextsize == 0);
^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) * If the offset & length are not perfectly aligned
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * then kill prod, it will just get us in trouble.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) div_u64_rem(ap->offset, align, &mod);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) if (mod || ap->length % align)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) prod = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * Set ralen to be the actual requested length in rtextents.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) ralen = ap->length / mp->m_sb.sb_rextsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * If the old value was close enough to MAXEXTLEN that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * we rounded up to it, cut it back so it's valid again.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * Note that if it's a really large request (bigger than
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * MAXEXTLEN), we don't hear about that number, and can't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * adjust the starting point to match it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (ralen * mp->m_sb.sb_rextsize >= MAXEXTLEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) ralen = MAXEXTLEN / mp->m_sb.sb_rextsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * Lock out modifications to both the RT bitmap and summary inodes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) xfs_ilock(mp->m_rbmip, XFS_ILOCK_EXCL|XFS_ILOCK_RTBITMAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) xfs_trans_ijoin(ap->tp, mp->m_rbmip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) xfs_ilock(mp->m_rsumip, XFS_ILOCK_EXCL|XFS_ILOCK_RTSUM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) xfs_trans_ijoin(ap->tp, mp->m_rsumip, XFS_ILOCK_EXCL);
^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) * If it's an allocation to an empty file at offset 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * pick an extent that will space things out in the rt area.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (ap->eof && ap->offset == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) xfs_rtblock_t rtx; /* realtime extent no */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) error = xfs_rtpick_extent(mp, ap->tp, ralen, &rtx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) ap->blkno = rtx * mp->m_sb.sb_rextsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) ap->blkno = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) xfs_bmap_adjacent(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * Realtime allocation, done through xfs_rtallocate_extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) do_div(ap->blkno, mp->m_sb.sb_rextsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) rtb = ap->blkno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) ap->length = ralen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) error = xfs_rtallocate_extent(ap->tp, ap->blkno, 1, ap->length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) &ralen, ap->wasdel, prod, &rtb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) ap->blkno = rtb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) if (ap->blkno != NULLFSBLOCK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) ap->blkno *= mp->m_sb.sb_rextsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) ralen *= mp->m_sb.sb_rextsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) ap->length = ralen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) ap->ip->i_d.di_nblocks += ralen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) if (ap->wasdel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) ap->ip->i_delayed_blks -= ralen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * Adjust the disk quota also. This was reserved
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * earlier.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) xfs_trans_mod_dquot_byino(ap->tp, ap->ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) ap->wasdel ? XFS_TRANS_DQ_DELRTBCOUNT :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) XFS_TRANS_DQ_RTBCOUNT, (long) ralen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) ap->length = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) #endif /* CONFIG_XFS_RT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * Extent tree block counting routines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * Count leaf blocks given a range of extent records. Delayed allocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * extents are not counted towards the totals.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) xfs_extnum_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) xfs_bmap_count_leaves(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) struct xfs_ifork *ifp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) xfs_filblks_t *count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) struct xfs_iext_cursor icur;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) struct xfs_bmbt_irec got;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) xfs_extnum_t numrecs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) for_each_xfs_iext(ifp, &icur, &got) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (!isnullstartblock(got.br_startblock)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) *count += got.br_blockcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) numrecs++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) return numrecs;
^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) * Count fsblocks of the given fork. Delayed allocation extents are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * not counted towards the totals.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) xfs_bmap_count_blocks(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) struct xfs_trans *tp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) int whichfork,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) xfs_extnum_t *nextents,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) xfs_filblks_t *count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) struct xfs_mount *mp = ip->i_mount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct xfs_btree_cur *cur;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) xfs_extlen_t btblocks = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) *nextents = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) *count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (!ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) switch (ifp->if_format) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) case XFS_DINODE_FMT_BTREE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) if (!(ifp->if_flags & XFS_IFEXTENTS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) error = xfs_iread_extents(tp, ip, whichfork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) error = xfs_btree_count_blocks(cur, &btblocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) xfs_btree_del_cursor(cur, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) * xfs_btree_count_blocks includes the root block contained in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) * the inode fork in @btblocks, so subtract one because we're
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * only interested in allocated disk blocks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) *count += btblocks - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) /* fall through */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) case XFS_DINODE_FMT_EXTENTS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) *nextents = xfs_bmap_count_leaves(ifp, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) xfs_getbmap_report_one(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) struct getbmapx *bmv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) struct kgetbmap *out,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) int64_t bmv_end,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) struct xfs_bmbt_irec *got)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) struct kgetbmap *p = out + bmv->bmv_entries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) bool shared = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) error = xfs_reflink_trim_around_shared(ip, got, &shared);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) if (isnullstartblock(got->br_startblock) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) got->br_startblock == DELAYSTARTBLOCK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) * Delalloc extents that start beyond EOF can occur due to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) * speculative EOF allocation when the delalloc extent is larger
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * than the largest freespace extent at conversion time. These
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) * extents cannot be converted by data writeback, so can exist
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) * here even if we are not supposed to be finding delalloc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) * extents.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) if (got->br_startoff < XFS_B_TO_FSB(ip->i_mount, XFS_ISIZE(ip)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) ASSERT((bmv->bmv_iflags & BMV_IF_DELALLOC) != 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) p->bmv_oflags |= BMV_OF_DELALLOC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) p->bmv_block = -2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) p->bmv_block = xfs_fsb_to_db(ip, got->br_startblock);
^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) if (got->br_state == XFS_EXT_UNWRITTEN &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) (bmv->bmv_iflags & BMV_IF_PREALLOC))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) p->bmv_oflags |= BMV_OF_PREALLOC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) if (shared)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) p->bmv_oflags |= BMV_OF_SHARED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) p->bmv_offset = XFS_FSB_TO_BB(ip->i_mount, got->br_startoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) p->bmv_length = XFS_FSB_TO_BB(ip->i_mount, got->br_blockcount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) bmv->bmv_offset = p->bmv_offset + p->bmv_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) bmv->bmv_length = max(0LL, bmv_end - bmv->bmv_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) bmv->bmv_entries++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) xfs_getbmap_report_hole(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) struct getbmapx *bmv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) struct kgetbmap *out,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) int64_t bmv_end,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) xfs_fileoff_t bno,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) xfs_fileoff_t end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) struct kgetbmap *p = out + bmv->bmv_entries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (bmv->bmv_iflags & BMV_IF_NO_HOLES)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) p->bmv_block = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) p->bmv_offset = XFS_FSB_TO_BB(ip->i_mount, bno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) p->bmv_length = XFS_FSB_TO_BB(ip->i_mount, end - bno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) bmv->bmv_offset = p->bmv_offset + p->bmv_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) bmv->bmv_length = max(0LL, bmv_end - bmv->bmv_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) bmv->bmv_entries++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) static inline bool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) xfs_getbmap_full(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) struct getbmapx *bmv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) return bmv->bmv_length == 0 || bmv->bmv_entries >= bmv->bmv_count - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) static bool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) xfs_getbmap_next_rec(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) struct xfs_bmbt_irec *rec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) xfs_fileoff_t total_end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) xfs_fileoff_t end = rec->br_startoff + rec->br_blockcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) if (end == total_end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) rec->br_startoff += rec->br_blockcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (!isnullstartblock(rec->br_startblock) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) rec->br_startblock != DELAYSTARTBLOCK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) rec->br_startblock += rec->br_blockcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) rec->br_blockcount = total_end - end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) * Get inode's extents as described in bmv, and format for output.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) * Calls formatter to fill the user's buffer until all extents
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) * are mapped, until the passed-in bmv->bmv_count slots have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) * been filled, or until the formatter short-circuits the loop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) * if it is tracking filled-in extents on its own.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) int /* error code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) xfs_getbmap(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) struct getbmapx *bmv, /* user bmap structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) struct kgetbmap *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) struct xfs_mount *mp = ip->i_mount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) int iflags = bmv->bmv_iflags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) int whichfork, lock, error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) int64_t bmv_end, max_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) xfs_fileoff_t bno, first_bno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) struct xfs_ifork *ifp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) struct xfs_bmbt_irec got, rec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) xfs_filblks_t len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) struct xfs_iext_cursor icur;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) if (bmv->bmv_iflags & ~BMV_IF_VALID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) #ifndef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) /* Only allow CoW fork queries if we're debugging. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if (iflags & BMV_IF_COWFORK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) if ((iflags & BMV_IF_ATTRFORK) && (iflags & BMV_IF_COWFORK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if (bmv->bmv_length < -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) bmv->bmv_entries = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) if (bmv->bmv_length == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) if (iflags & BMV_IF_ATTRFORK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) whichfork = XFS_ATTR_FORK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) else if (iflags & BMV_IF_COWFORK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) whichfork = XFS_COW_FORK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) whichfork = XFS_DATA_FORK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) ifp = XFS_IFORK_PTR(ip, whichfork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) xfs_ilock(ip, XFS_IOLOCK_SHARED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) switch (whichfork) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) case XFS_ATTR_FORK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (!XFS_IFORK_Q(ip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) goto out_unlock_iolock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) max_len = 1LL << 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) lock = xfs_ilock_attr_map_shared(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) case XFS_COW_FORK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) /* No CoW fork? Just return */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) if (!ifp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) goto out_unlock_iolock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) if (xfs_get_cowextsz_hint(ip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) max_len = mp->m_super->s_maxbytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) max_len = XFS_ISIZE(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) lock = XFS_ILOCK_SHARED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) xfs_ilock(ip, lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) case XFS_DATA_FORK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) if (!(iflags & BMV_IF_DELALLOC) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) (ip->i_delayed_blks || XFS_ISIZE(ip) > ip->i_d.di_size)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) error = filemap_write_and_wait(VFS_I(ip)->i_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) goto out_unlock_iolock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) * Even after flushing the inode, there can still be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) * delalloc blocks on the inode beyond EOF due to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) * speculative preallocation. These are not removed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) * until the release function is called or the inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) * is inactivated. Hence we cannot assert here that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) * ip->i_delayed_blks == 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) if (xfs_get_extsz_hint(ip) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) (ip->i_d.di_flags &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) (XFS_DIFLAG_PREALLOC | XFS_DIFLAG_APPEND)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) max_len = mp->m_super->s_maxbytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) max_len = XFS_ISIZE(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) lock = xfs_ilock_data_map_shared(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) break;
^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) switch (ifp->if_format) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) case XFS_DINODE_FMT_EXTENTS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) case XFS_DINODE_FMT_BTREE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) case XFS_DINODE_FMT_LOCAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) /* Local format inode forks report no extents. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) goto out_unlock_ilock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) error = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) goto out_unlock_ilock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) if (bmv->bmv_length == -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) max_len = XFS_FSB_TO_BB(mp, XFS_B_TO_FSB(mp, max_len));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) bmv->bmv_length = max(0LL, max_len - bmv->bmv_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) bmv_end = bmv->bmv_offset + bmv->bmv_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) first_bno = bno = XFS_BB_TO_FSBT(mp, bmv->bmv_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) len = XFS_BB_TO_FSB(mp, bmv->bmv_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) if (!(ifp->if_flags & XFS_IFEXTENTS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) error = xfs_iread_extents(NULL, ip, whichfork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) goto out_unlock_ilock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) if (!xfs_iext_lookup_extent(ip, ifp, bno, &icur, &got)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) * Report a whole-file hole if the delalloc flag is set to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) * stay compatible with the old implementation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) if (iflags & BMV_IF_DELALLOC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) xfs_getbmap_report_hole(ip, bmv, out, bmv_end, bno,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) XFS_B_TO_FSB(mp, XFS_ISIZE(ip)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) goto out_unlock_ilock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) while (!xfs_getbmap_full(bmv)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) xfs_trim_extent(&got, first_bno, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) * Report an entry for a hole if this extent doesn't directly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) * follow the previous one.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) if (got.br_startoff > bno) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) xfs_getbmap_report_hole(ip, bmv, out, bmv_end, bno,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) got.br_startoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) if (xfs_getbmap_full(bmv))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) * In order to report shared extents accurately, we report each
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) * distinct shared / unshared part of a single bmbt record with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) * an individual getbmapx record.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) bno = got.br_startoff + got.br_blockcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) rec = got;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) error = xfs_getbmap_report_one(ip, bmv, out, bmv_end,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) &rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) if (error || xfs_getbmap_full(bmv))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) goto out_unlock_ilock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) } while (xfs_getbmap_next_rec(&rec, bno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) if (!xfs_iext_next_extent(ifp, &icur, &got)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) xfs_fileoff_t end = XFS_B_TO_FSB(mp, XFS_ISIZE(ip));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) out[bmv->bmv_entries - 1].bmv_oflags |= BMV_OF_LAST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) if (whichfork != XFS_ATTR_FORK && bno < end &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) !xfs_getbmap_full(bmv)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) xfs_getbmap_report_hole(ip, bmv, out, bmv_end,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) bno, end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) if (bno >= first_bno + len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) out_unlock_ilock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) xfs_iunlock(ip, lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) out_unlock_iolock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) xfs_iunlock(ip, XFS_IOLOCK_SHARED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) * Dead simple method of punching delalyed allocation blocks from a range in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) * the inode. This will always punch out both the start and end blocks, even
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) * if the ranges only partially overlap them, so it is up to the caller to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) * ensure that partial blocks are not passed in.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) xfs_bmap_punch_delalloc_range(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) xfs_fileoff_t start_fsb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) xfs_fileoff_t length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) struct xfs_ifork *ifp = &ip->i_df;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) xfs_fileoff_t end_fsb = start_fsb + length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) struct xfs_bmbt_irec got, del;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) struct xfs_iext_cursor icur;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) int error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) ASSERT(ifp->if_flags & XFS_IFEXTENTS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) xfs_ilock(ip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) if (!xfs_iext_lookup_extent_before(ip, ifp, &end_fsb, &icur, &got))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) while (got.br_startoff + got.br_blockcount > start_fsb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) del = got;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) xfs_trim_extent(&del, start_fsb, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) * A delete can push the cursor forward. Step back to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) * previous extent on non-delalloc or extents outside the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) * target range.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) if (!del.br_blockcount ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) !isnullstartblock(del.br_startblock)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) if (!xfs_iext_prev_extent(ifp, &icur, &got))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) error = xfs_bmap_del_extent_delay(ip, XFS_DATA_FORK, &icur,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) &got, &del);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) if (error || !xfs_iext_get_extent(ifp, &icur, &got))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) xfs_iunlock(ip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) * Test whether it is appropriate to check an inode for and free post EOF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) * blocks. The 'force' parameter determines whether we should also consider
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) * regular files that are marked preallocated or append-only.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) bool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) xfs_can_free_eofblocks(struct xfs_inode *ip, bool force)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) /* prealloc/delalloc exists only on regular files */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) if (!S_ISREG(VFS_I(ip)->i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) * Zero sized files with no cached pages and delalloc blocks will not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) * have speculative prealloc/delalloc blocks to remove.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) if (VFS_I(ip)->i_size == 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) VFS_I(ip)->i_mapping->nrpages == 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) ip->i_delayed_blks == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) /* If we haven't read in the extent list, then don't do it now. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) if (!(ip->i_df.if_flags & XFS_IFEXTENTS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) * Do not free real preallocated or append-only files unless the file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) * has delalloc blocks and we are forced to remove them.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) if (ip->i_d.di_flags & (XFS_DIFLAG_PREALLOC | XFS_DIFLAG_APPEND))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) if (!force || ip->i_delayed_blks == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) * This is called to free any blocks beyond eof. The caller must hold
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) * IOLOCK_EXCL unless we are in the inode reclaim path and have the only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) * reference to the inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) xfs_free_eofblocks(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) struct xfs_inode *ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) struct xfs_trans *tp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) xfs_fileoff_t end_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) xfs_fileoff_t last_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) xfs_filblks_t map_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) int nimaps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) struct xfs_bmbt_irec imap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) struct xfs_mount *mp = ip->i_mount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) * Figure out if there are any blocks beyond the end
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) * of the file. If not, then there is nothing to do.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_ISIZE(ip));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) last_fsb = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) if (last_fsb <= end_fsb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) map_len = last_fsb - end_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) nimaps = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) xfs_ilock(ip, XFS_ILOCK_SHARED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) error = xfs_bmapi_read(ip, end_fsb, map_len, &imap, &nimaps, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) xfs_iunlock(ip, XFS_ILOCK_SHARED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) * If there are blocks after the end of file, truncate the file to its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) * current size to free them up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) if (!error && (nimaps != 0) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) (imap.br_startblock != HOLESTARTBLOCK ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) ip->i_delayed_blks)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) * Attach the dquots to the inode up front.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) error = xfs_qm_dqattach(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) /* wait on dio to ensure i_size has settled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) inode_dio_wait(VFS_I(ip));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) error = xfs_trans_alloc(mp, &M_RES(mp)->tr_itruncate, 0, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) &tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) ASSERT(XFS_FORCED_SHUTDOWN(mp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) xfs_ilock(ip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) xfs_trans_ijoin(tp, ip, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) * Do not update the on-disk file size. If we update the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) * on-disk file size and then the system crashes before the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) * contents of the file are flushed to disk then the files
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) * may be full of holes (ie NULL files bug).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) error = xfs_itruncate_extents_flags(&tp, ip, XFS_DATA_FORK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) XFS_ISIZE(ip), XFS_BMAPI_NODISCARD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) * If we get an error at this point we simply don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) * bother truncating the file.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) xfs_trans_cancel(tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) error = xfs_trans_commit(tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) xfs_inode_clear_eofblocks_tag(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) xfs_iunlock(ip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) xfs_alloc_file_space(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) xfs_off_t offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) xfs_off_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) int alloc_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) xfs_mount_t *mp = ip->i_mount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) xfs_off_t count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) xfs_filblks_t allocated_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) xfs_filblks_t allocatesize_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) xfs_extlen_t extsz, temp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) xfs_fileoff_t startoffset_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) xfs_fileoff_t endoffset_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) int nimaps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) int quota_flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) int rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) xfs_trans_t *tp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) xfs_bmbt_irec_t imaps[1], *imapp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) uint qblocks, resblks, resrtextents;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) trace_xfs_alloc_file_space(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) if (XFS_FORCED_SHUTDOWN(mp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) error = xfs_qm_dqattach(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) if (len <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) rt = XFS_IS_REALTIME_INODE(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) extsz = xfs_get_extsz_hint(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) count = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) imapp = &imaps[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) nimaps = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) startoffset_fsb = XFS_B_TO_FSBT(mp, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) endoffset_fsb = XFS_B_TO_FSB(mp, offset + count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) allocatesize_fsb = endoffset_fsb - startoffset_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) * Allocate file space until done or until there is an error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) while (allocatesize_fsb && !error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) xfs_fileoff_t s, e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) * Determine space reservations for data/realtime.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) if (unlikely(extsz)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) s = startoffset_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) do_div(s, extsz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) s *= extsz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) e = startoffset_fsb + allocatesize_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) div_u64_rem(startoffset_fsb, extsz, &temp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) if (temp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) e += temp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) div_u64_rem(e, extsz, &temp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) if (temp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) e += extsz - temp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) s = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) e = allocatesize_fsb;
^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) * The transaction reservation is limited to a 32-bit block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) * count, hence we need to limit the number of blocks we are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) * trying to reserve to avoid an overflow. We can't allocate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) * more than @nimaps extents, and an extent is limited on disk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) * to MAXEXTLEN (21 bits), so use that to enforce the limit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) resblks = min_t(xfs_fileoff_t, (e - s), (MAXEXTLEN * nimaps));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) if (unlikely(rt)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) resrtextents = qblocks = resblks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) resrtextents /= mp->m_sb.sb_rextsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) quota_flag = XFS_QMOPT_RES_RTBLKS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) resrtextents = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) resblks = qblocks = XFS_DIOSTRAT_SPACE_RES(mp, resblks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) quota_flag = XFS_QMOPT_RES_REGBLKS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) }
^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) * Allocate and setup the transaction.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, resblks,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) resrtextents, 0, &tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) * Check for running out of space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) * Free the transaction structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) ASSERT(error == -ENOSPC || XFS_FORCED_SHUTDOWN(mp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) xfs_ilock(ip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) error = xfs_trans_reserve_quota_nblks(tp, ip, qblocks,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) 0, quota_flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) goto error1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) xfs_trans_ijoin(tp, ip, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) error = xfs_bmapi_write(tp, ip, startoffset_fsb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) allocatesize_fsb, alloc_type, 0, imapp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) &nimaps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) goto error0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) * Complete the transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) error = xfs_trans_commit(tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) xfs_iunlock(ip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) allocated_fsb = imapp->br_blockcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) if (nimaps == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) error = -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) startoffset_fsb += allocated_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) allocatesize_fsb -= allocated_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) error0: /* unlock inode, unreserve quota blocks, cancel trans */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) xfs_trans_unreserve_quota_nblks(tp, ip, (long)qblocks, 0, quota_flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) error1: /* Just cancel transaction */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) xfs_trans_cancel(tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) xfs_iunlock(ip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) xfs_unmap_extent(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) xfs_fileoff_t startoffset_fsb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) xfs_filblks_t len_fsb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) int *done)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) struct xfs_mount *mp = ip->i_mount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) struct xfs_trans *tp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) uint resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, resblks, 0, 0, &tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) ASSERT(error == -ENOSPC || XFS_FORCED_SHUTDOWN(mp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) return error;
^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) xfs_ilock(ip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) error = xfs_trans_reserve_quota(tp, mp, ip->i_udquot, ip->i_gdquot,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) ip->i_pdquot, resblks, 0, XFS_QMOPT_RES_REGBLKS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) goto out_trans_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) xfs_trans_ijoin(tp, ip, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) error = xfs_bunmapi(tp, ip, startoffset_fsb, len_fsb, 0, 2, done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) goto out_trans_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) error = xfs_trans_commit(tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) xfs_iunlock(ip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) out_trans_cancel:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) xfs_trans_cancel(tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) /* Caller must first wait for the completion of any pending DIOs if required. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) xfs_flush_unmap_range(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) xfs_off_t offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) xfs_off_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) struct xfs_mount *mp = ip->i_mount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) struct inode *inode = VFS_I(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) xfs_off_t rounding, start, end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) rounding = max_t(xfs_off_t, 1 << mp->m_sb.sb_blocklog, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) start = round_down(offset, rounding);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) end = round_up(offset + len, rounding) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) error = filemap_write_and_wait_range(inode->i_mapping, start, end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) truncate_pagecache_range(inode, start, end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) xfs_free_file_space(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) xfs_off_t offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) xfs_off_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) struct xfs_mount *mp = ip->i_mount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) xfs_fileoff_t startoffset_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) xfs_fileoff_t endoffset_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) int done = 0, error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) trace_xfs_free_file_space(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) error = xfs_qm_dqattach(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) if (len <= 0) /* if nothing being freed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) startoffset_fsb = XFS_B_TO_FSB(mp, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) endoffset_fsb = XFS_B_TO_FSBT(mp, offset + len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) /* We can only free complete realtime extents. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) if (XFS_IS_REALTIME_INODE(ip) && mp->m_sb.sb_rextsize > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) startoffset_fsb = roundup_64(startoffset_fsb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) mp->m_sb.sb_rextsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) endoffset_fsb = rounddown_64(endoffset_fsb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) mp->m_sb.sb_rextsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) * Need to zero the stuff we're not freeing, on disk.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) if (endoffset_fsb > startoffset_fsb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) while (!done) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) error = xfs_unmap_extent(ip, startoffset_fsb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) endoffset_fsb - startoffset_fsb, &done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) * Now that we've unmap all full blocks we'll have to zero out any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) * partial block at the beginning and/or end. iomap_zero_range is smart
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) * enough to skip any holes, including those we just created, but we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) * must take care not to zero beyond EOF and enlarge i_size.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) if (offset >= XFS_ISIZE(ip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) if (offset + len > XFS_ISIZE(ip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) len = XFS_ISIZE(ip) - offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) error = iomap_zero_range(VFS_I(ip), offset, len, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) &xfs_buffered_write_iomap_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) * If we zeroed right up to EOF and EOF straddles a page boundary we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) * must make sure that the post-EOF area is also zeroed because the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) * page could be mmap'd and iomap_zero_range doesn't do that for us.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) * Writeback of the eof page will do this, albeit clumsily.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) if (offset + len >= XFS_ISIZE(ip) && offset_in_page(offset + len) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) round_down(offset + len, PAGE_SIZE), LLONG_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) xfs_prepare_shift(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) loff_t offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) struct xfs_mount *mp = ip->i_mount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) * Trim eofblocks to avoid shifting uninitialized post-eof preallocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) * into the accessible region of the file.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) if (xfs_can_free_eofblocks(ip, true)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) error = xfs_free_eofblocks(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) return error;
^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) * Shift operations must stabilize the start block offset boundary along
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) * with the full range of the operation. If we don't, a COW writeback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) * completion could race with an insert, front merge with the start
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) * extent (after split) during the shift and corrupt the file. Start
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) * with the block just prior to the start to stabilize the boundary.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) offset = round_down(offset, 1 << mp->m_sb.sb_blocklog);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) if (offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) offset -= (1 << mp->m_sb.sb_blocklog);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) * Writeback and invalidate cache for the remainder of the file as we're
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) * about to shift down every extent from offset to EOF.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) error = xfs_flush_unmap_range(ip, offset, XFS_ISIZE(ip));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) * Clean out anything hanging around in the cow fork now that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) * we've flushed all the dirty data out to disk to avoid having
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) * CoW extents at the wrong offsets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) if (xfs_inode_has_cow_data(ip)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) error = xfs_reflink_cancel_cow_range(ip, offset, NULLFILEOFF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) * xfs_collapse_file_space()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) * This routine frees disk space and shift extent for the given file.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) * The first thing we do is to free data blocks in the specified range
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) * by calling xfs_free_file_space(). It would also sync dirty data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) * and invalidate page cache over the region on which collapse range
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) * is working. And Shift extent records to the left to cover a hole.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) * 0 on success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) * errno on error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) xfs_collapse_file_space(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) xfs_off_t offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) xfs_off_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) struct xfs_mount *mp = ip->i_mount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) struct xfs_trans *tp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) xfs_fileoff_t next_fsb = XFS_B_TO_FSB(mp, offset + len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) xfs_fileoff_t shift_fsb = XFS_B_TO_FSB(mp, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) bool done = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) ASSERT(xfs_isilocked(ip, XFS_MMAPLOCK_EXCL));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) trace_xfs_collapse_file_space(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) error = xfs_free_file_space(ip, offset, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) error = xfs_prepare_shift(ip, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, 0, 0, 0, &tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) xfs_ilock(ip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) xfs_trans_ijoin(tp, ip, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) while (!done) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) error = xfs_bmap_collapse_extents(tp, ip, &next_fsb, shift_fsb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) &done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) goto out_trans_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) if (done)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) /* finish any deferred frees and roll the transaction */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) error = xfs_defer_finish(&tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) goto out_trans_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) error = xfs_trans_commit(tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) xfs_iunlock(ip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) out_trans_cancel:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) xfs_trans_cancel(tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) xfs_iunlock(ip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) * xfs_insert_file_space()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) * This routine create hole space by shifting extents for the given file.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) * The first thing we do is to sync dirty data and invalidate page cache
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) * over the region on which insert range is working. And split an extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) * to two extents at given offset by calling xfs_bmap_split_extent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) * And shift all extent records which are laying between [offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) * last allocated extent] to the right to reserve hole range.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) * 0 on success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) * errno on error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) xfs_insert_file_space(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) loff_t offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) loff_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) struct xfs_mount *mp = ip->i_mount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) struct xfs_trans *tp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) xfs_fileoff_t stop_fsb = XFS_B_TO_FSB(mp, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) xfs_fileoff_t next_fsb = NULLFSBLOCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) xfs_fileoff_t shift_fsb = XFS_B_TO_FSB(mp, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) bool done = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) ASSERT(xfs_isilocked(ip, XFS_MMAPLOCK_EXCL));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) trace_xfs_insert_file_space(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) error = xfs_bmap_can_insert_extents(ip, stop_fsb, shift_fsb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) error = xfs_prepare_shift(ip, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) XFS_DIOSTRAT_SPACE_RES(mp, 0), 0, 0, &tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) xfs_ilock(ip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) xfs_trans_ijoin(tp, ip, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) * The extent shifting code works on extent granularity. So, if stop_fsb
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) * is not the starting block of extent, we need to split the extent at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) * stop_fsb.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) error = xfs_bmap_split_extent(tp, ip, stop_fsb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) goto out_trans_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) error = xfs_defer_finish(&tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) goto out_trans_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) error = xfs_bmap_insert_extents(tp, ip, &next_fsb, shift_fsb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) &done, stop_fsb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) goto out_trans_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) } while (!done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) error = xfs_trans_commit(tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) xfs_iunlock(ip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) out_trans_cancel:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) xfs_trans_cancel(tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) xfs_iunlock(ip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) * We need to check that the format of the data fork in the temporary inode is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) * valid for the target inode before doing the swap. This is not a problem with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) * attr1 because of the fixed fork offset, but attr2 has a dynamically sized
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) * data fork depending on the space the attribute fork is taking so we can get
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) * invalid formats on the target inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) * E.g. target has space for 7 extents in extent format, temp inode only has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) * space for 6. If we defragment down to 7 extents, then the tmp format is a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) * btree, but when swapped it needs to be in extent format. Hence we can't just
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) * blindly swap data forks on attr2 filesystems.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) * Note that we check the swap in both directions so that we don't end up with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) * a corrupt temporary inode, either.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) * Note that fixing the way xfs_fsr sets up the attribute fork in the source
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) * inode will prevent this situation from occurring, so all we do here is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) * reject and log the attempt. basically we are putting the responsibility on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) * userspace to get this right.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) xfs_swap_extents_check_format(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) struct xfs_inode *ip, /* target inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) struct xfs_inode *tip) /* tmp inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) struct xfs_ifork *ifp = &ip->i_df;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) struct xfs_ifork *tifp = &tip->i_df;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) /* User/group/project quota ids must match if quotas are enforced. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) if (XFS_IS_QUOTA_ON(ip->i_mount) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) (!uid_eq(VFS_I(ip)->i_uid, VFS_I(tip)->i_uid) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) !gid_eq(VFS_I(ip)->i_gid, VFS_I(tip)->i_gid) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) ip->i_d.di_projid != tip->i_d.di_projid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) /* Should never get a local format */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) if (ifp->if_format == XFS_DINODE_FMT_LOCAL ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) tifp->if_format == XFS_DINODE_FMT_LOCAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) * if the target inode has less extents that then temporary inode then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) * why did userspace call us?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) if (ifp->if_nextents < tifp->if_nextents)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) * If we have to use the (expensive) rmap swap method, we can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) * handle any number of extents and any format.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) if (xfs_sb_version_hasrmapbt(&ip->i_mount->m_sb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) * if the target inode is in extent form and the temp inode is in btree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) * form then we will end up with the target inode in the wrong format
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) * as we already know there are less extents in the temp inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) if (ifp->if_format == XFS_DINODE_FMT_EXTENTS &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) tifp->if_format == XFS_DINODE_FMT_BTREE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) /* Check temp in extent form to max in target */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) if (tifp->if_format == XFS_DINODE_FMT_EXTENTS &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) tifp->if_nextents > XFS_IFORK_MAXEXT(ip, XFS_DATA_FORK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) /* Check target in extent form to max in temp */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) if (ifp->if_format == XFS_DINODE_FMT_EXTENTS &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) ifp->if_nextents > XFS_IFORK_MAXEXT(tip, XFS_DATA_FORK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) * If we are in a btree format, check that the temp root block will fit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) * in the target and that it has enough extents to be in btree format
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) * in the target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) * Note that we have to be careful to allow btree->extent conversions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) * (a common defrag case) which will occur when the temp inode is in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) * extent format...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) if (tifp->if_format == XFS_DINODE_FMT_BTREE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) if (XFS_IFORK_Q(ip) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) XFS_BMAP_BMDR_SPACE(tifp->if_broot) > XFS_IFORK_BOFF(ip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) if (tifp->if_nextents <= XFS_IFORK_MAXEXT(ip, XFS_DATA_FORK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) /* Reciprocal target->temp btree format checks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) if (ifp->if_format == XFS_DINODE_FMT_BTREE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) if (XFS_IFORK_Q(tip) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) XFS_BMAP_BMDR_SPACE(ip->i_df.if_broot) > XFS_IFORK_BOFF(tip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) if (ifp->if_nextents <= XFS_IFORK_MAXEXT(tip, XFS_DATA_FORK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) xfs_swap_extent_flush(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) struct xfs_inode *ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) error = filemap_write_and_wait(VFS_I(ip)->i_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) truncate_pagecache_range(VFS_I(ip), 0, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) /* Verify O_DIRECT for ftmp */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) if (VFS_I(ip)->i_mapping->nrpages)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) * Move extents from one file to another, when rmap is enabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) STATIC int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) xfs_swap_extent_rmap(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) struct xfs_trans **tpp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) struct xfs_inode *tip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) struct xfs_trans *tp = *tpp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) struct xfs_bmbt_irec irec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) struct xfs_bmbt_irec uirec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) struct xfs_bmbt_irec tirec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) xfs_fileoff_t offset_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) xfs_fileoff_t end_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) xfs_filblks_t count_fsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) xfs_filblks_t ilen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) xfs_filblks_t rlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) int nimaps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) uint64_t tip_flags2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) * If the source file has shared blocks, we must flag the donor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) * file as having shared blocks so that we get the shared-block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) * rmap functions when we go to fix up the rmaps. The flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) * will be switch for reals later.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) tip_flags2 = tip->i_d.di_flags2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) if (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) tip->i_d.di_flags2 |= XFS_DIFLAG2_REFLINK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) offset_fsb = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) end_fsb = XFS_B_TO_FSB(ip->i_mount, i_size_read(VFS_I(ip)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) count_fsb = (xfs_filblks_t)(end_fsb - offset_fsb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) while (count_fsb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) /* Read extent from the donor file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) nimaps = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) error = xfs_bmapi_read(tip, offset_fsb, count_fsb, &tirec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) &nimaps, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) ASSERT(nimaps == 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) ASSERT(tirec.br_startblock != DELAYSTARTBLOCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) trace_xfs_swap_extent_rmap_remap(tip, &tirec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) ilen = tirec.br_blockcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) /* Unmap the old blocks in the source file. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) while (tirec.br_blockcount) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) ASSERT(tp->t_firstblock == NULLFSBLOCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) trace_xfs_swap_extent_rmap_remap_piece(tip, &tirec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) /* Read extent from the source file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) nimaps = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) error = xfs_bmapi_read(ip, tirec.br_startoff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) tirec.br_blockcount, &irec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) &nimaps, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) ASSERT(nimaps == 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) ASSERT(tirec.br_startoff == irec.br_startoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) trace_xfs_swap_extent_rmap_remap_piece(ip, &irec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) /* Trim the extent. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) uirec = tirec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) uirec.br_blockcount = rlen = min_t(xfs_filblks_t,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) tirec.br_blockcount,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) irec.br_blockcount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) trace_xfs_swap_extent_rmap_remap_piece(tip, &uirec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) /* Remove the mapping from the donor file. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) xfs_bmap_unmap_extent(tp, tip, &uirec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) /* Remove the mapping from the source file. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) xfs_bmap_unmap_extent(tp, ip, &irec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) /* Map the donor file's blocks into the source file. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) xfs_bmap_map_extent(tp, ip, &uirec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) /* Map the source file's blocks into the donor file. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) xfs_bmap_map_extent(tp, tip, &irec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) error = xfs_defer_finish(tpp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) tp = *tpp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) tirec.br_startoff += rlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) if (tirec.br_startblock != HOLESTARTBLOCK &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) tirec.br_startblock != DELAYSTARTBLOCK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) tirec.br_startblock += rlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) tirec.br_blockcount -= rlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) /* Roll on... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) count_fsb -= ilen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) offset_fsb += ilen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) tip->i_d.di_flags2 = tip_flags2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) trace_xfs_swap_extent_rmap_error(ip, error, _RET_IP_);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) tip->i_d.di_flags2 = tip_flags2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) /* Swap the extents of two files by swapping data forks. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) STATIC int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) xfs_swap_extent_forks(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) struct xfs_trans *tp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) struct xfs_inode *tip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) int *src_log_flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) int *target_log_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) xfs_filblks_t aforkblks = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) xfs_filblks_t taforkblks = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) xfs_extnum_t junk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) uint64_t tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) * Count the number of extended attribute blocks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) if (XFS_IFORK_Q(ip) && ip->i_afp->if_nextents > 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) ip->i_afp->if_format != XFS_DINODE_FMT_LOCAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) error = xfs_bmap_count_blocks(tp, ip, XFS_ATTR_FORK, &junk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) &aforkblks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) if (XFS_IFORK_Q(tip) && tip->i_afp->if_nextents > 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) tip->i_afp->if_format != XFS_DINODE_FMT_LOCAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) error = xfs_bmap_count_blocks(tp, tip, XFS_ATTR_FORK, &junk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) &taforkblks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) * Btree format (v3) inodes have the inode number stamped in the bmbt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) * block headers. We can't start changing the bmbt blocks until the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) * inode owner change is logged so recovery does the right thing in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) * event of a crash. Set the owner change log flags now and leave the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) * bmbt scan as the last step.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) if (xfs_sb_version_has_v3inode(&ip->i_mount->m_sb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) if (ip->i_df.if_format == XFS_DINODE_FMT_BTREE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) (*target_log_flags) |= XFS_ILOG_DOWNER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) if (tip->i_df.if_format == XFS_DINODE_FMT_BTREE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) (*src_log_flags) |= XFS_ILOG_DOWNER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) * Swap the data forks of the inodes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) swap(ip->i_df, tip->i_df);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) * Fix the on-disk inode values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) tmp = (uint64_t)ip->i_d.di_nblocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) ip->i_d.di_nblocks = tip->i_d.di_nblocks - taforkblks + aforkblks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) tip->i_d.di_nblocks = tmp + taforkblks - aforkblks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) * The extents in the source inode could still contain speculative
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) * preallocation beyond EOF (e.g. the file is open but not modified
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) * while defrag is in progress). In that case, we need to copy over the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) * number of delalloc blocks the data fork in the source inode is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) * tracking beyond EOF so that when the fork is truncated away when the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) * temporary inode is unlinked we don't underrun the i_delayed_blks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) * counter on that inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) ASSERT(tip->i_delayed_blks == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) tip->i_delayed_blks = ip->i_delayed_blks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) ip->i_delayed_blks = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) switch (ip->i_df.if_format) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) case XFS_DINODE_FMT_EXTENTS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) (*src_log_flags) |= XFS_ILOG_DEXT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) case XFS_DINODE_FMT_BTREE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) ASSERT(!xfs_sb_version_has_v3inode(&ip->i_mount->m_sb) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) (*src_log_flags & XFS_ILOG_DOWNER));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) (*src_log_flags) |= XFS_ILOG_DBROOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) switch (tip->i_df.if_format) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) case XFS_DINODE_FMT_EXTENTS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) (*target_log_flags) |= XFS_ILOG_DEXT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) case XFS_DINODE_FMT_BTREE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) (*target_log_flags) |= XFS_ILOG_DBROOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) ASSERT(!xfs_sb_version_has_v3inode(&ip->i_mount->m_sb) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) (*target_log_flags & XFS_ILOG_DOWNER));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) * Fix up the owners of the bmbt blocks to refer to the current inode. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) * change owner scan attempts to order all modified buffers in the current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) * transaction. In the event of ordered buffer failure, the offending buffer is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) * physically logged as a fallback and the scan returns -EAGAIN. We must roll
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) * the transaction in this case to replenish the fallback log reservation and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) * restart the scan. This process repeats until the scan completes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) xfs_swap_change_owner(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) struct xfs_trans **tpp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) struct xfs_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) struct xfs_inode *tmpip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) struct xfs_trans *tp = *tpp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) error = xfs_bmbt_change_owner(tp, ip, XFS_DATA_FORK, ip->i_ino,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) /* success or fatal error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) if (error != -EAGAIN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) error = xfs_trans_roll(tpp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) tp = *tpp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) * Redirty both inodes so they can relog and keep the log tail
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) * moving forward.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) xfs_trans_ijoin(tp, ip, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) xfs_trans_ijoin(tp, tmpip, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) xfs_trans_log_inode(tp, tmpip, XFS_ILOG_CORE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) } while (true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) xfs_swap_extents(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) struct xfs_inode *ip, /* target inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) struct xfs_inode *tip, /* tmp inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) struct xfs_swapext *sxp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) struct xfs_mount *mp = ip->i_mount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) struct xfs_trans *tp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) struct xfs_bstat *sbp = &sxp->sx_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) int src_log_flags, target_log_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) int error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) int lock_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) uint64_t f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) int resblks = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) unsigned int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) * Lock the inodes against other IO, page faults and truncate to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) * begin with. Then we can ensure the inodes are flushed and have no
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) * page cache safely. Once we have done this we can take the ilocks and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) * do the rest of the checks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) lock_two_nondirectories(VFS_I(ip), VFS_I(tip));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) lock_flags = XFS_MMAPLOCK_EXCL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) xfs_lock_two_inodes(ip, XFS_MMAPLOCK_EXCL, tip, XFS_MMAPLOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) /* Verify that both files have the same format */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) if ((VFS_I(ip)->i_mode & S_IFMT) != (VFS_I(tip)->i_mode & S_IFMT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) error = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) /* Verify both files are either real-time or non-realtime */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) if (XFS_IS_REALTIME_INODE(ip) != XFS_IS_REALTIME_INODE(tip)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) error = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) error = xfs_qm_dqattach(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) error = xfs_qm_dqattach(tip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) error = xfs_swap_extent_flush(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) error = xfs_swap_extent_flush(tip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) if (xfs_inode_has_cow_data(tip)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) error = xfs_reflink_cancel_cow_range(tip, 0, NULLFILEOFF, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) * Extent "swapping" with rmap requires a permanent reservation and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) * a block reservation because it's really just a remap operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) * performed with log redo items!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) if (xfs_sb_version_hasrmapbt(&mp->m_sb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) int w = XFS_DATA_FORK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) uint32_t ipnext = ip->i_df.if_nextents;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) uint32_t tipnext = tip->i_df.if_nextents;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) * Conceptually this shouldn't affect the shape of either bmbt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) * but since we atomically move extents one by one, we reserve
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) * enough space to rebuild both trees.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) resblks = XFS_SWAP_RMAP_SPACE_RES(mp, ipnext, w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) resblks += XFS_SWAP_RMAP_SPACE_RES(mp, tipnext, w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) * If either inode straddles a bmapbt block allocation boundary,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) * the rmapbt algorithm triggers repeated allocs and frees as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) * extents are remapped. This can exhaust the block reservation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) * prematurely and cause shutdown. Return freed blocks to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) * transaction reservation to counter this behavior.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) flags |= XFS_TRANS_RES_FDBLKS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, resblks, 0, flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) &tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) * Lock and join the inodes to the tansaction so that transaction commit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) * or cancel will unlock the inodes from this point onwards.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) xfs_lock_two_inodes(ip, XFS_ILOCK_EXCL, tip, XFS_ILOCK_EXCL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) lock_flags |= XFS_ILOCK_EXCL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) xfs_trans_ijoin(tp, ip, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) xfs_trans_ijoin(tp, tip, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) /* Verify all data are being swapped */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) if (sxp->sx_offset != 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) sxp->sx_length != ip->i_d.di_size ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) sxp->sx_length != tip->i_d.di_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) error = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) goto out_trans_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) trace_xfs_swap_extent_before(ip, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) trace_xfs_swap_extent_before(tip, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) /* check inode formats now that data is flushed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) error = xfs_swap_extents_check_format(ip, tip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) xfs_notice(mp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) "%s: inode 0x%llx format is incompatible for exchanging.",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) __func__, ip->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) goto out_trans_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) * Compare the current change & modify times with that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) * passed in. If they differ, we abort this swap.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) * This is the mechanism used to ensure the calling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) * process that the file was not changed out from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) * under it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) if ((sbp->bs_ctime.tv_sec != VFS_I(ip)->i_ctime.tv_sec) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) (sbp->bs_ctime.tv_nsec != VFS_I(ip)->i_ctime.tv_nsec) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) (sbp->bs_mtime.tv_sec != VFS_I(ip)->i_mtime.tv_sec) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) (sbp->bs_mtime.tv_nsec != VFS_I(ip)->i_mtime.tv_nsec)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) error = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) goto out_trans_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) * Note the trickiness in setting the log flags - we set the owner log
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) * flag on the opposite inode (i.e. the inode we are setting the new
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) * owner to be) because once we swap the forks and log that, log
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) * recovery is going to see the fork as owned by the swapped inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) * not the pre-swapped inodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) src_log_flags = XFS_ILOG_CORE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) target_log_flags = XFS_ILOG_CORE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) if (xfs_sb_version_hasrmapbt(&mp->m_sb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) error = xfs_swap_extent_rmap(&tp, ip, tip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) error = xfs_swap_extent_forks(tp, ip, tip, &src_log_flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) &target_log_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) goto out_trans_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) /* Do we have to swap reflink flags? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) if ((ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK) ^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720) (tip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) f = ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) ip->i_d.di_flags2 |= tip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) tip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) tip->i_d.di_flags2 |= f & XFS_DIFLAG2_REFLINK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) /* Swap the cow forks. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) if (xfs_sb_version_hasreflink(&mp->m_sb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) ASSERT(!ip->i_cowfp ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) ip->i_cowfp->if_format == XFS_DINODE_FMT_EXTENTS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) ASSERT(!tip->i_cowfp ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) tip->i_cowfp->if_format == XFS_DINODE_FMT_EXTENTS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) swap(ip->i_cowfp, tip->i_cowfp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) if (ip->i_cowfp && ip->i_cowfp->if_bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) xfs_inode_set_cowblocks_tag(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) xfs_inode_clear_cowblocks_tag(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) if (tip->i_cowfp && tip->i_cowfp->if_bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) xfs_inode_set_cowblocks_tag(tip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) xfs_inode_clear_cowblocks_tag(tip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) xfs_trans_log_inode(tp, ip, src_log_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) xfs_trans_log_inode(tp, tip, target_log_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) * The extent forks have been swapped, but crc=1,rmapbt=0 filesystems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) * have inode number owner values in the bmbt blocks that still refer to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) * the old inode. Scan each bmbt to fix up the owner values with the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) * inode number of the current inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) if (src_log_flags & XFS_ILOG_DOWNER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) error = xfs_swap_change_owner(&tp, ip, tip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) goto out_trans_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) if (target_log_flags & XFS_ILOG_DOWNER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) error = xfs_swap_change_owner(&tp, tip, ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) goto out_trans_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) * If this is a synchronous mount, make sure that the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) * transaction goes to disk before returning to the user.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) if (mp->m_flags & XFS_MOUNT_WSYNC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) xfs_trans_set_sync(tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) error = xfs_trans_commit(tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) trace_xfs_swap_extent_after(ip, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) trace_xfs_swap_extent_after(tip, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) xfs_iunlock(ip, lock_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) xfs_iunlock(tip, lock_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) unlock_two_nondirectories(VFS_I(ip), VFS_I(tip));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) out_trans_cancel:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) xfs_trans_cancel(tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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