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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2018-02-26 22:43:18 -0600 |
|---|---|---|
| committer | Eric Sandeen <sandeen@redhat.com> | 2018-02-26 22:43:18 -0600 |
| commit | 1048d0e209ca4ad387485e6aeed07dd5870b0f36 (patch) | |
| tree | 141b56d2ca3ca766265db7629185fb943bf26e71 | |
| parent | 556c739daebc238e585aae4b4c20a34760f6b7ae (diff) | |
| download | xfsprogs-dev-1048d0e209ca4ad387485e6aeed07dd5870b0f36.tar.gz | |
xfs: add scrub cross-referencing helpers for the refcount btrees
Source kernel commit: 49db55eca5665e32c9d3e67a7d5694bcc6c274de
Add a couple of functions to the refcount btrees that will be used
to cross-reference metadata against the refcountbt.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
| -rw-r--r-- | libxfs/xfs_refcount.c | 19 | ||||
| -rw-r--r-- | libxfs/xfs_refcount.h | 3 |
2 files changed, 22 insertions, 0 deletions
diff --git a/libxfs/xfs_refcount.c b/libxfs/xfs_refcount.c index 2a57f321c2..24e68a1ddb 100644 --- a/libxfs/xfs_refcount.c +++ b/libxfs/xfs_refcount.c @@ -1695,3 +1695,22 @@ out_cursor: xfs_trans_brelse(tp, agbp); goto out_trans; } + +/* 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 eafb9d1f3b..2a731ac68f 100644 --- a/libxfs/xfs_refcount.h +++ b/libxfs/xfs_refcount.h @@ -83,4 +83,7 @@ static inline xfs_fileoff_t xfs_refcount_max_unmap(int log_res) return (log_res * 3 / 4) / XFS_REFCOUNT_ITEM_OVERHEAD; } +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__ */ |