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xfs: cross-reference the realtime bitmap

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While we're scrubbing various btrees, cross-reference the records
with the other metadata.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong 2018-01-16 18:53:10 -08:00
parent f6d5fc21fd
commit 46d9bfb5e7
5 changed files with 57 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

21
fs/xfs/libxfs/xfs_rtbitmap.c
View file

@ -1097,3 +1097,24 @@ xfs_verify_rtbno(
{
return rtbno < mp->m_sb.sb_rblocks;
}
/* Is the given extent all free? */
int
xfs_rtalloc_extent_is_free(
struct xfs_mount *mp,
struct xfs_trans *tp,
xfs_rtblock_t start,
xfs_extlen_t len,
bool *is_free)
{
xfs_rtblock_t end;
int matches;
int error;
error = xfs_rtcheck_range(mp, tp, start, len, 1, &end, &matches);
if (error)
return error;
*is_free = matches;
return 0;
}

3
fs/xfs/scrub/bmap.c
View file

@ -243,6 +243,9 @@ xfs_scrub_bmap_rt_extent_xref(
{
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. */

23
fs/xfs/scrub/rtbitmap.c
View file

@ -98,3 +98,26 @@ xfs_scrub_rtsummary(
/* XXX: implement this some day */
return -ENOENT;
}
/* xref check that the extent is not free in the rtbitmap */
void
xfs_scrub_xref_is_used_rt_space(
struct xfs_scrub_context *sc,
xfs_rtblock_t fsbno,
xfs_extlen_t len)
{
bool is_free;
int error;
xfs_ilock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);
error = xfs_rtalloc_extent_is_free(sc->mp, sc->tp, fsbno, len,
&is_free);
if (!xfs_scrub_should_check_xref(sc, &error, NULL))
goto out_unlock;
if (is_free)
xfs_scrub_ino_xref_set_corrupt(sc, sc->mp->m_rbmip->i_ino,
NULL);
out_unlock:
xfs_iunlock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);
}

6
fs/xfs/scrub/scrub.h
View file

@ -142,5 +142,11 @@ void xfs_scrub_xref_is_cow_staging(struct xfs_scrub_context *sc,
xfs_agblock_t bno, xfs_extlen_t len);
void xfs_scrub_xref_is_not_shared(struct xfs_scrub_context *sc,
xfs_agblock_t bno, xfs_extlen_t len);
#ifdef CONFIG_XFS_RT
void xfs_scrub_xref_is_used_rt_space(struct xfs_scrub_context *sc,
xfs_rtblock_t rtbno, xfs_extlen_t len);
#else
# define xfs_scrub_xref_is_used_rt_space(sc, rtbno, len) do { } while (0)
#endif
#endif /* __XFS_SCRUB_SCRUB_H__ */

4
fs/xfs/xfs_rtalloc.h
View file

@ -139,6 +139,9 @@ int xfs_rtalloc_query_all(struct xfs_trans *tp,
xfs_rtalloc_query_range_fn fn,
void *priv);
bool xfs_verify_rtbno(struct xfs_mount *mp, xfs_rtblock_t rtbno);
int xfs_rtalloc_extent_is_free(struct xfs_mount *mp, struct xfs_trans *tp,
xfs_rtblock_t start, xfs_extlen_t len,
bool *is_free);
#else
# define xfs_rtallocate_extent(t,b,min,max,l,f,p,rb) (ENOSYS)
# define xfs_rtfree_extent(t,b,l) (ENOSYS)
@ -148,6 +151,7 @@ bool xfs_verify_rtbno(struct xfs_mount *mp, xfs_rtblock_t rtbno);
# define xfs_rtalloc_query_all(t,f,p) (ENOSYS)
# define xfs_rtbuf_get(m,t,b,i,p) (ENOSYS)
# define xfs_verify_rtbno(m, r) (false)
# define xfs_rtalloc_extent_is_free(m,t,s,l,i) (ENOSYS)
static inline int /* error */
xfs_rtmount_init(
xfs_mount_t *mp) /* file system mount structure */