linux/fs/xfs/scrub/bmap.c
Darrick J. Wong 0a9633fa2f xfs: add helpers to deal with transaction allocation and rolling
For repairs, we need to reserve at least as many blocks as we think
we're going to need to rebuild the data structure, and we're going to
need some helpers to roll transactions while maintaining locks on the AG
headers so that other threads cannot wander into the middle of a repair.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
2018-05-30 08:03:14 -07:00

735 lines
20 KiB
C

/*
* Copyright (C) 2017 Oracle. All Rights Reserved.
*
* Author: Darrick J. Wong <darrick.wong@oracle.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
#include "xfs_defer.h"
#include "xfs_btree.h"
#include "xfs_bit.h"
#include "xfs_log_format.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_inode.h"
#include "xfs_inode_fork.h"
#include "xfs_alloc.h"
#include "xfs_rtalloc.h"
#include "xfs_bmap.h"
#include "xfs_bmap_util.h"
#include "xfs_bmap_btree.h"
#include "xfs_rmap.h"
#include "xfs_rmap_btree.h"
#include "xfs_refcount.h"
#include "scrub/xfs_scrub.h"
#include "scrub/scrub.h"
#include "scrub/common.h"
#include "scrub/btree.h"
#include "scrub/trace.h"
/* Set us up with an inode's bmap. */
int
xfs_scrub_setup_inode_bmap(
struct xfs_scrub_context *sc,
struct xfs_inode *ip)
{
int error;
error = xfs_scrub_get_inode(sc, ip);
if (error)
goto out;
sc->ilock_flags = XFS_IOLOCK_EXCL | XFS_MMAPLOCK_EXCL;
xfs_ilock(sc->ip, sc->ilock_flags);
/*
* We don't want any ephemeral data fork updates sitting around
* while we inspect block mappings, so wait for directio to finish
* and flush dirty data if we have delalloc reservations.
*/
if (S_ISREG(VFS_I(sc->ip)->i_mode) &&
sc->sm->sm_type == XFS_SCRUB_TYPE_BMBTD) {
inode_dio_wait(VFS_I(sc->ip));
error = filemap_write_and_wait(VFS_I(sc->ip)->i_mapping);
if (error)
goto out;
}
/* Got the inode, lock it and we're ready to go. */
error = xfs_scrub_trans_alloc(sc, 0);
if (error)
goto out;
sc->ilock_flags |= XFS_ILOCK_EXCL;
xfs_ilock(sc->ip, XFS_ILOCK_EXCL);
out:
/* scrub teardown will unlock and release the inode */
return error;
}
/*
* Inode fork block mapping (BMBT) scrubber.
* More complex than the others because we have to scrub
* all the extents regardless of whether or not the fork
* is in btree format.
*/
struct xfs_scrub_bmap_info {
struct xfs_scrub_context *sc;
xfs_fileoff_t lastoff;
bool is_rt;
bool is_shared;
int whichfork;
};
/* Look for a corresponding rmap for this irec. */
static inline bool
xfs_scrub_bmap_get_rmap(
struct xfs_scrub_bmap_info *info,
struct xfs_bmbt_irec *irec,
xfs_agblock_t agbno,
uint64_t owner,
struct xfs_rmap_irec *rmap)
{
xfs_fileoff_t offset;
unsigned int rflags = 0;
int has_rmap;
int error;
if (info->whichfork == XFS_ATTR_FORK)
rflags |= XFS_RMAP_ATTR_FORK;
/*
* CoW staging extents are owned (on disk) by the refcountbt, so
* their rmaps do not have offsets.
*/
if (info->whichfork == XFS_COW_FORK)
offset = 0;
else
offset = irec->br_startoff;
/*
* If the caller thinks this could be a shared bmbt extent (IOWs,
* any data fork extent of a reflink inode) then we have to use the
* range rmap lookup to make sure we get the correct owner/offset.
*/
if (info->is_shared) {
error = xfs_rmap_lookup_le_range(info->sc->sa.rmap_cur, agbno,
owner, offset, rflags, rmap, &has_rmap);
if (!xfs_scrub_should_check_xref(info->sc, &error,
&info->sc->sa.rmap_cur))
return false;
goto out;
}
/*
* Otherwise, use the (faster) regular lookup.
*/
error = xfs_rmap_lookup_le(info->sc->sa.rmap_cur, agbno, 0, owner,
offset, rflags, &has_rmap);
if (!xfs_scrub_should_check_xref(info->sc, &error,
&info->sc->sa.rmap_cur))
return false;
if (!has_rmap)
goto out;
error = xfs_rmap_get_rec(info->sc->sa.rmap_cur, rmap, &has_rmap);
if (!xfs_scrub_should_check_xref(info->sc, &error,
&info->sc->sa.rmap_cur))
return false;
out:
if (!has_rmap)
xfs_scrub_fblock_xref_set_corrupt(info->sc, info->whichfork,
irec->br_startoff);
return has_rmap;
}
/* Make sure that we have rmapbt records for this extent. */
STATIC void
xfs_scrub_bmap_xref_rmap(
struct xfs_scrub_bmap_info *info,
struct xfs_bmbt_irec *irec,
xfs_agblock_t agbno)
{
struct xfs_rmap_irec rmap;
unsigned long long rmap_end;
uint64_t owner;
if (!info->sc->sa.rmap_cur || xfs_scrub_skip_xref(info->sc->sm))
return;
if (info->whichfork == XFS_COW_FORK)
owner = XFS_RMAP_OWN_COW;
else
owner = info->sc->ip->i_ino;
/* Find the rmap record for this irec. */
if (!xfs_scrub_bmap_get_rmap(info, irec, agbno, owner, &rmap))
return;
/* Check the rmap. */
rmap_end = (unsigned long long)rmap.rm_startblock + rmap.rm_blockcount;
if (rmap.rm_startblock > agbno ||
agbno + irec->br_blockcount > rmap_end)
xfs_scrub_fblock_xref_set_corrupt(info->sc, info->whichfork,
irec->br_startoff);
/*
* Check the logical offsets if applicable. CoW staging extents
* don't track logical offsets since the mappings only exist in
* memory.
*/
if (info->whichfork != XFS_COW_FORK) {
rmap_end = (unsigned long long)rmap.rm_offset +
rmap.rm_blockcount;
if (rmap.rm_offset > irec->br_startoff ||
irec->br_startoff + irec->br_blockcount > rmap_end)
xfs_scrub_fblock_xref_set_corrupt(info->sc,
info->whichfork, irec->br_startoff);
}
if (rmap.rm_owner != owner)
xfs_scrub_fblock_xref_set_corrupt(info->sc, info->whichfork,
irec->br_startoff);
/*
* Check for discrepancies between the unwritten flag in the irec and
* the rmap. Note that the (in-memory) CoW fork distinguishes between
* unwritten and written extents, but we don't track that in the rmap
* records because the blocks are owned (on-disk) by the refcountbt,
* which doesn't track unwritten state.
*/
if (owner != XFS_RMAP_OWN_COW &&
irec->br_state == XFS_EXT_UNWRITTEN &&
!(rmap.rm_flags & XFS_RMAP_UNWRITTEN))
xfs_scrub_fblock_xref_set_corrupt(info->sc, info->whichfork,
irec->br_startoff);
if (info->whichfork == XFS_ATTR_FORK &&
!(rmap.rm_flags & XFS_RMAP_ATTR_FORK))
xfs_scrub_fblock_xref_set_corrupt(info->sc, info->whichfork,
irec->br_startoff);
if (rmap.rm_flags & XFS_RMAP_BMBT_BLOCK)
xfs_scrub_fblock_xref_set_corrupt(info->sc, info->whichfork,
irec->br_startoff);
}
/* Cross-reference a single rtdev extent record. */
STATIC void
xfs_scrub_bmap_rt_extent_xref(
struct xfs_scrub_bmap_info *info,
struct xfs_inode *ip,
struct xfs_btree_cur *cur,
struct xfs_bmbt_irec *irec)
{
if (info->sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
return;
xfs_scrub_xref_is_used_rt_space(info->sc, irec->br_startblock,
irec->br_blockcount);
}
/* Cross-reference a single datadev extent record. */
STATIC void
xfs_scrub_bmap_extent_xref(
struct xfs_scrub_bmap_info *info,
struct xfs_inode *ip,
struct xfs_btree_cur *cur,
struct xfs_bmbt_irec *irec)
{
struct xfs_mount *mp = info->sc->mp;
xfs_agnumber_t agno;
xfs_agblock_t agbno;
xfs_extlen_t len;
int error;
if (info->sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
return;
agno = XFS_FSB_TO_AGNO(mp, irec->br_startblock);
agbno = XFS_FSB_TO_AGBNO(mp, irec->br_startblock);
len = irec->br_blockcount;
error = xfs_scrub_ag_init(info->sc, agno, &info->sc->sa);
if (!xfs_scrub_fblock_process_error(info->sc, info->whichfork,
irec->br_startoff, &error))
return;
xfs_scrub_xref_is_used_space(info->sc, agbno, len);
xfs_scrub_xref_is_not_inode_chunk(info->sc, agbno, len);
xfs_scrub_bmap_xref_rmap(info, irec, agbno);
switch (info->whichfork) {
case XFS_DATA_FORK:
if (xfs_is_reflink_inode(info->sc->ip))
break;
/* fall through */
case XFS_ATTR_FORK:
xfs_scrub_xref_is_not_shared(info->sc, agbno,
irec->br_blockcount);
break;
case XFS_COW_FORK:
xfs_scrub_xref_is_cow_staging(info->sc, agbno,
irec->br_blockcount);
break;
}
xfs_scrub_ag_free(info->sc, &info->sc->sa);
}
/* Scrub a single extent record. */
STATIC int
xfs_scrub_bmap_extent(
struct xfs_inode *ip,
struct xfs_btree_cur *cur,
struct xfs_scrub_bmap_info *info,
struct xfs_bmbt_irec *irec)
{
struct xfs_mount *mp = info->sc->mp;
struct xfs_buf *bp = NULL;
xfs_filblks_t end;
int error = 0;
if (cur)
xfs_btree_get_block(cur, 0, &bp);
/*
* Check for out-of-order extents. This record could have come
* from the incore list, for which there is no ordering check.
*/
if (irec->br_startoff < info->lastoff)
xfs_scrub_fblock_set_corrupt(info->sc, info->whichfork,
irec->br_startoff);
/* There should never be a "hole" extent in either extent list. */
if (irec->br_startblock == HOLESTARTBLOCK)
xfs_scrub_fblock_set_corrupt(info->sc, info->whichfork,
irec->br_startoff);
/*
* Check for delalloc extents. We never iterate the ones in the
* in-core extent scan, and we should never see these in the bmbt.
*/
if (isnullstartblock(irec->br_startblock))
xfs_scrub_fblock_set_corrupt(info->sc, info->whichfork,
irec->br_startoff);
/* Make sure the extent points to a valid place. */
if (irec->br_blockcount > MAXEXTLEN)
xfs_scrub_fblock_set_corrupt(info->sc, info->whichfork,
irec->br_startoff);
if (irec->br_startblock + irec->br_blockcount <= irec->br_startblock)
xfs_scrub_fblock_set_corrupt(info->sc, info->whichfork,
irec->br_startoff);
end = irec->br_startblock + irec->br_blockcount - 1;
if (info->is_rt &&
(!xfs_verify_rtbno(mp, irec->br_startblock) ||
!xfs_verify_rtbno(mp, end)))
xfs_scrub_fblock_set_corrupt(info->sc, info->whichfork,
irec->br_startoff);
if (!info->is_rt &&
(!xfs_verify_fsbno(mp, irec->br_startblock) ||
!xfs_verify_fsbno(mp, end) ||
XFS_FSB_TO_AGNO(mp, irec->br_startblock) !=
XFS_FSB_TO_AGNO(mp, end)))
xfs_scrub_fblock_set_corrupt(info->sc, info->whichfork,
irec->br_startoff);
/* We don't allow unwritten extents on attr forks. */
if (irec->br_state == XFS_EXT_UNWRITTEN &&
info->whichfork == XFS_ATTR_FORK)
xfs_scrub_fblock_set_corrupt(info->sc, info->whichfork,
irec->br_startoff);
if (info->is_rt)
xfs_scrub_bmap_rt_extent_xref(info, ip, cur, irec);
else
xfs_scrub_bmap_extent_xref(info, ip, cur, irec);
info->lastoff = irec->br_startoff + irec->br_blockcount;
return error;
}
/* Scrub a bmbt record. */
STATIC int
xfs_scrub_bmapbt_rec(
struct xfs_scrub_btree *bs,
union xfs_btree_rec *rec)
{
struct xfs_bmbt_irec irec;
struct xfs_scrub_bmap_info *info = bs->private;
struct xfs_inode *ip = bs->cur->bc_private.b.ip;
struct xfs_buf *bp = NULL;
struct xfs_btree_block *block;
uint64_t owner;
int i;
/*
* Check the owners of the btree blocks up to the level below
* the root since the verifiers don't do that.
*/
if (xfs_sb_version_hascrc(&bs->cur->bc_mp->m_sb) &&
bs->cur->bc_ptrs[0] == 1) {
for (i = 0; i < bs->cur->bc_nlevels - 1; i++) {
block = xfs_btree_get_block(bs->cur, i, &bp);
owner = be64_to_cpu(block->bb_u.l.bb_owner);
if (owner != ip->i_ino)
xfs_scrub_fblock_set_corrupt(bs->sc,
info->whichfork, 0);
}
}
/* Set up the in-core record and scrub it. */
xfs_bmbt_disk_get_all(&rec->bmbt, &irec);
return xfs_scrub_bmap_extent(ip, bs->cur, info, &irec);
}
/* Scan the btree records. */
STATIC int
xfs_scrub_bmap_btree(
struct xfs_scrub_context *sc,
int whichfork,
struct xfs_scrub_bmap_info *info)
{
struct xfs_owner_info oinfo;
struct xfs_mount *mp = sc->mp;
struct xfs_inode *ip = sc->ip;
struct xfs_btree_cur *cur;
int error;
cur = xfs_bmbt_init_cursor(mp, sc->tp, ip, whichfork);
xfs_rmap_ino_bmbt_owner(&oinfo, ip->i_ino, whichfork);
error = xfs_scrub_btree(sc, cur, xfs_scrub_bmapbt_rec, &oinfo, info);
xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR :
XFS_BTREE_NOERROR);
return error;
}
struct xfs_scrub_bmap_check_rmap_info {
struct xfs_scrub_context *sc;
int whichfork;
struct xfs_iext_cursor icur;
};
/* Can we find bmaps that fit this rmap? */
STATIC int
xfs_scrub_bmap_check_rmap(
struct xfs_btree_cur *cur,
struct xfs_rmap_irec *rec,
void *priv)
{
struct xfs_bmbt_irec irec;
struct xfs_scrub_bmap_check_rmap_info *sbcri = priv;
struct xfs_ifork *ifp;
struct xfs_scrub_context *sc = sbcri->sc;
bool have_map;
/* Is this even the right fork? */
if (rec->rm_owner != sc->ip->i_ino)
return 0;
if ((sbcri->whichfork == XFS_ATTR_FORK) ^
!!(rec->rm_flags & XFS_RMAP_ATTR_FORK))
return 0;
if (rec->rm_flags & XFS_RMAP_BMBT_BLOCK)
return 0;
/* Now look up the bmbt record. */
ifp = XFS_IFORK_PTR(sc->ip, sbcri->whichfork);
if (!ifp) {
xfs_scrub_fblock_set_corrupt(sc, sbcri->whichfork,
rec->rm_offset);
goto out;
}
have_map = xfs_iext_lookup_extent(sc->ip, ifp, rec->rm_offset,
&sbcri->icur, &irec);
if (!have_map)
xfs_scrub_fblock_set_corrupt(sc, sbcri->whichfork,
rec->rm_offset);
/*
* bmap extent record lengths are constrained to 2^21 blocks in length
* because of space constraints in the on-disk metadata structure.
* However, rmap extent record lengths are constrained only by AG
* length, so we have to loop through the bmbt to make sure that the
* entire rmap is covered by bmbt records.
*/
while (have_map) {
if (irec.br_startoff != rec->rm_offset)
xfs_scrub_fblock_set_corrupt(sc, sbcri->whichfork,
rec->rm_offset);
if (irec.br_startblock != XFS_AGB_TO_FSB(sc->mp,
cur->bc_private.a.agno, rec->rm_startblock))
xfs_scrub_fblock_set_corrupt(sc, sbcri->whichfork,
rec->rm_offset);
if (irec.br_blockcount > rec->rm_blockcount)
xfs_scrub_fblock_set_corrupt(sc, sbcri->whichfork,
rec->rm_offset);
if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
break;
rec->rm_startblock += irec.br_blockcount;
rec->rm_offset += irec.br_blockcount;
rec->rm_blockcount -= irec.br_blockcount;
if (rec->rm_blockcount == 0)
break;
have_map = xfs_iext_next_extent(ifp, &sbcri->icur, &irec);
if (!have_map)
xfs_scrub_fblock_set_corrupt(sc, sbcri->whichfork,
rec->rm_offset);
}
out:
if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
return XFS_BTREE_QUERY_RANGE_ABORT;
return 0;
}
/* Make sure each rmap has a corresponding bmbt entry. */
STATIC int
xfs_scrub_bmap_check_ag_rmaps(
struct xfs_scrub_context *sc,
int whichfork,
xfs_agnumber_t agno)
{
struct xfs_scrub_bmap_check_rmap_info sbcri;
struct xfs_btree_cur *cur;
struct xfs_buf *agf;
int error;
error = xfs_alloc_read_agf(sc->mp, sc->tp, agno, 0, &agf);
if (error)
return error;
cur = xfs_rmapbt_init_cursor(sc->mp, sc->tp, agf, agno);
if (!cur) {
error = -ENOMEM;
goto out_agf;
}
sbcri.sc = sc;
sbcri.whichfork = whichfork;
error = xfs_rmap_query_all(cur, xfs_scrub_bmap_check_rmap, &sbcri);
if (error == XFS_BTREE_QUERY_RANGE_ABORT)
error = 0;
xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR);
out_agf:
xfs_trans_brelse(sc->tp, agf);
return error;
}
/* Make sure each rmap has a corresponding bmbt entry. */
STATIC int
xfs_scrub_bmap_check_rmaps(
struct xfs_scrub_context *sc,
int whichfork)
{
loff_t size;
xfs_agnumber_t agno;
int error;
if (!xfs_sb_version_hasrmapbt(&sc->mp->m_sb) ||
whichfork == XFS_COW_FORK ||
(sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
return 0;
/* Don't support realtime rmap checks yet. */
if (XFS_IS_REALTIME_INODE(sc->ip) && whichfork == XFS_DATA_FORK)
return 0;
/*
* Only do this for complex maps that are in btree format, or for
* situations where we would seem to have a size but zero extents.
* The inode repair code can zap broken iforks, which means we have
* to flag this bmap as corrupt if there are rmaps that need to be
* reattached.
*/
switch (whichfork) {
case XFS_DATA_FORK:
size = i_size_read(VFS_I(sc->ip));
break;
case XFS_ATTR_FORK:
size = XFS_IFORK_Q(sc->ip);
break;
default:
size = 0;
break;
}
if (XFS_IFORK_FORMAT(sc->ip, whichfork) != XFS_DINODE_FMT_BTREE &&
(size == 0 || XFS_IFORK_NEXTENTS(sc->ip, whichfork) > 0))
return 0;
for (agno = 0; agno < sc->mp->m_sb.sb_agcount; agno++) {
error = xfs_scrub_bmap_check_ag_rmaps(sc, whichfork, agno);
if (error)
return error;
if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
break;
}
return 0;
}
/*
* Scrub an inode fork's block mappings.
*
* First we scan every record in every btree block, if applicable.
* Then we unconditionally scan the incore extent cache.
*/
STATIC int
xfs_scrub_bmap(
struct xfs_scrub_context *sc,
int whichfork)
{
struct xfs_bmbt_irec irec;
struct xfs_scrub_bmap_info info = { NULL };
struct xfs_mount *mp = sc->mp;
struct xfs_inode *ip = sc->ip;
struct xfs_ifork *ifp;
xfs_fileoff_t endoff;
struct xfs_iext_cursor icur;
int error = 0;
ifp = XFS_IFORK_PTR(ip, whichfork);
info.is_rt = whichfork == XFS_DATA_FORK && XFS_IS_REALTIME_INODE(ip);
info.whichfork = whichfork;
info.is_shared = whichfork == XFS_DATA_FORK && xfs_is_reflink_inode(ip);
info.sc = sc;
switch (whichfork) {
case XFS_COW_FORK:
/* Non-existent CoW forks are ignorable. */
if (!ifp)
goto out;
/* No CoW forks on non-reflink inodes/filesystems. */
if (!xfs_is_reflink_inode(ip)) {
xfs_scrub_ino_set_corrupt(sc, sc->ip->i_ino);
goto out;
}
break;
case XFS_ATTR_FORK:
if (!ifp)
goto out_check_rmap;
if (!xfs_sb_version_hasattr(&mp->m_sb) &&
!xfs_sb_version_hasattr2(&mp->m_sb))
xfs_scrub_ino_set_corrupt(sc, sc->ip->i_ino);
break;
default:
ASSERT(whichfork == XFS_DATA_FORK);
break;
}
/* Check the fork values */
switch (XFS_IFORK_FORMAT(ip, whichfork)) {
case XFS_DINODE_FMT_UUID:
case XFS_DINODE_FMT_DEV:
case XFS_DINODE_FMT_LOCAL:
/* No mappings to check. */
goto out;
case XFS_DINODE_FMT_EXTENTS:
if (!(ifp->if_flags & XFS_IFEXTENTS)) {
xfs_scrub_fblock_set_corrupt(sc, whichfork, 0);
goto out;
}
break;
case XFS_DINODE_FMT_BTREE:
if (whichfork == XFS_COW_FORK) {
xfs_scrub_fblock_set_corrupt(sc, whichfork, 0);
goto out;
}
error = xfs_scrub_bmap_btree(sc, whichfork, &info);
if (error)
goto out;
break;
default:
xfs_scrub_fblock_set_corrupt(sc, whichfork, 0);
goto out;
}
if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
goto out;
/* Now try to scrub the in-memory extent list. */
if (!(ifp->if_flags & XFS_IFEXTENTS)) {
error = xfs_iread_extents(sc->tp, ip, whichfork);
if (!xfs_scrub_fblock_process_error(sc, whichfork, 0, &error))
goto out;
}
/* Find the offset of the last extent in the mapping. */
error = xfs_bmap_last_offset(ip, &endoff, whichfork);
if (!xfs_scrub_fblock_process_error(sc, whichfork, 0, &error))
goto out;
/* Scrub extent records. */
info.lastoff = 0;
ifp = XFS_IFORK_PTR(ip, whichfork);
for_each_xfs_iext(ifp, &icur, &irec) {
if (xfs_scrub_should_terminate(sc, &error) ||
(sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
break;
if (isnullstartblock(irec.br_startblock))
continue;
if (irec.br_startoff >= endoff) {
xfs_scrub_fblock_set_corrupt(sc, whichfork,
irec.br_startoff);
goto out;
}
error = xfs_scrub_bmap_extent(ip, NULL, &info, &irec);
if (error)
goto out;
}
out_check_rmap:
error = xfs_scrub_bmap_check_rmaps(sc, whichfork);
if (!xfs_scrub_fblock_xref_process_error(sc, whichfork, 0, &error))
goto out;
out:
return error;
}
/* Scrub an inode's data fork. */
int
xfs_scrub_bmap_data(
struct xfs_scrub_context *sc)
{
return xfs_scrub_bmap(sc, XFS_DATA_FORK);
}
/* Scrub an inode's attr fork. */
int
xfs_scrub_bmap_attr(
struct xfs_scrub_context *sc)
{
return xfs_scrub_bmap(sc, XFS_ATTR_FORK);
}
/* Scrub an inode's CoW fork. */
int
xfs_scrub_bmap_cow(
struct xfs_scrub_context *sc)
{
if (!xfs_is_reflink_inode(sc->ip))
return -ENOENT;
return xfs_scrub_bmap(sc, XFS_COW_FORK);
}