[PATCH 20/24] xfs: cross-reference refcount btree during scrub
"Darrick J. Wong" <[email protected]>
| Newsgroups | gmane.comp.file-systems.xfs.general |
|---|---|
| Message-ID | <[email protected]> |
During metadata btree scrub, we should cross-reference with the reference counts. Signed-off-by: Darrick J. Wong <[email protected]> --- libxfs/xfs_refcount.c | 19 +++++++++++++++++++ libxfs/xfs_refcount.h | 3 +++ 2 files changed, 22 insertions(+) diff --git a/libxfs/xfs_refcount.c b/libxfs/xfs_refcount.c index 7d3735f..2d747ba 100644 --- a/libxfs/xfs_refcount.c +++ b/libxfs/xfs_refcount.c @@ -1534,3 +1534,22 @@ xfs_refcount_free_cow_extent( return __xfs_refcount_add(mp, dfops, XFS_REFCOUNT_FREE_COW, fsb, len); } + +/* Is there a record covering a given extent? */ +int +xfs_refcount_has_record( + struct xfs_btree_cur *cur, + xfs_agblock_t bno, + xfs_extlen_t len, + bool *exists) +{ + union xfs_btree_irec low; + union xfs_btree_irec high; + + memset(&low, 0, sizeof(low)); + low.rc.rc_startblock = bno; + memset(&high, 0xFF, sizeof(high)); + high.rc.rc_startblock = bno + len - 1; + + return xfs_btree_has_record(cur, &low, &high, exists); +} diff --git a/libxfs/xfs_refcount.h b/libxfs/xfs_refcount.h index 105c246..a00400f 100644 --- a/libxfs/xfs_refcount.h +++ b/libxfs/xfs_refcount.h @@ -64,4 +64,7 @@ extern int xfs_refcount_free_cow_extent(struct xfs_mount *mp, struct xfs_defer_ops *dfops, xfs_fsblock_t fsb, xfs_extlen_t len); +extern int xfs_refcount_has_record(struct xfs_btree_cur *cur, + xfs_agblock_t bno, xfs_extlen_t len, bool *exists); + #endif /* __XFS_REFCOUNT_H__ */ _______________________________________________ xfs mailing list [email protected] http://oss.sgi.com/mailman/listinfo/xfs