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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2018-01-16 18:52:12 -0800 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2018-01-17 21:00:44 -0800 |
| commit | ce1d802e6a889b8ee53b3444c6d7e8cfecadac50 (patch) | |
| tree | fc480df04e2ca492f26b042a94c91ac34e01bfc1 /fs/xfs/libxfs/xfs_alloc.c | |
| parent | c468562879a766de2c2fbedd41b653a7bf4c157d (diff) | |
| download | linux-ce1d802e6a889b8ee53b3444c6d7e8cfecadac50.tar.bz2 | |
xfs: add scrub cross-referencing helpers for the free space btrees
Add a couple of functions to the free space btrees that will be used
to cross-reference metadata against the bnobt/cntbt, and a generic
btree function that provides the real implementation.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_alloc.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_alloc.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c index 50ba989481cc..6883a7668de6 100644 --- a/fs/xfs/libxfs/xfs_alloc.c +++ b/fs/xfs/libxfs/xfs_alloc.c @@ -167,7 +167,7 @@ xfs_alloc_lookup_ge( * Lookup the first record less than or equal to [bno, len] * in the btree given by cur. */ -static int /* error */ +int /* error */ xfs_alloc_lookup_le( struct xfs_btree_cur *cur, /* btree cursor */ xfs_agblock_t bno, /* starting block of extent */ @@ -2996,3 +2996,22 @@ xfs_verify_fsbno( return false; return xfs_verify_agbno(mp, agno, XFS_FSB_TO_AGBNO(mp, fsbno)); } + +/* Is there a record covering a given extent? */ +int +xfs_alloc_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.a.ar_startblock = bno; + memset(&high, 0xFF, sizeof(high)); + high.a.ar_startblock = bno + len - 1; + + return xfs_btree_has_record(cur, &low, &high, exists); +} |