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| author |   Christoph Hellwig <hch@infradead.org> | 2008-10-30 16:56:09 +1100 |
|---|---|---|
| committer |   Lachlan McIlroy <lachlan@sgi.com> | 2008-10-30 16:56:09 +1100 |
| commit | fe033cc848489851f0c7de48f0b1bab5d744ad8a (patch) | |
| tree | f69709f4e9c125c528a699c32f439b53ea0969f3 /fs/xfs/xfs_ialloc.c | |
| parent | [XFS] implement generic xfs_btree_decrement (diff) | |
| download | linux-dev-fe033cc848489851f0c7de48f0b1bab5d744ad8a.tar.xz linux-dev-fe033cc848489851f0c7de48f0b1bab5d744ad8a.zip | |
[XFS] implement generic xfs_btree_lookup
From: Dave Chinner <dgc@sgi.com>
[hch: split out from bigger patch and minor adaptions]
SGI-PV: 985583
SGI-Modid: xfs-linux-melb:xfs-kern:32192a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_ialloc.c')
| -rw-r--r-- | fs/xfs/xfs_ialloc.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c index d36b42bf3ff6..bbf537f64c41 100644 --- a/fs/xfs/xfs_ialloc.c +++ b/fs/xfs/xfs_ialloc.c @@ -119,6 +119,59 @@ xfs_ialloc_cluster_alignment( } /* + * Lookup the record equal to ino in the btree given by cur. + */ +STATIC int /* error */ +xfs_inobt_lookup_eq( + struct xfs_btree_cur *cur, /* btree cursor */ + xfs_agino_t ino, /* starting inode of chunk */ + __int32_t fcnt, /* free inode count */ + xfs_inofree_t free, /* free inode mask */ + int *stat) /* success/failure */ +{ + cur->bc_rec.i.ir_startino = ino; + cur->bc_rec.i.ir_freecount = fcnt; + cur->bc_rec.i.ir_free = free; + return xfs_btree_lookup(cur, XFS_LOOKUP_EQ, stat); +} + +/* + * Lookup the first record greater than or equal to ino + * in the btree given by cur. + */ +int /* error */ +xfs_inobt_lookup_ge( + struct xfs_btree_cur *cur, /* btree cursor */ + xfs_agino_t ino, /* starting inode of chunk */ + __int32_t fcnt, /* free inode count */ + xfs_inofree_t free, /* free inode mask */ + int *stat) /* success/failure */ +{ + cur->bc_rec.i.ir_startino = ino; + cur->bc_rec.i.ir_freecount = fcnt; + cur->bc_rec.i.ir_free = free; + return xfs_btree_lookup(cur, XFS_LOOKUP_GE, stat); +} + +/* + * Lookup the first record less than or equal to ino + * in the btree given by cur. + */ +int /* error */ +xfs_inobt_lookup_le( + struct xfs_btree_cur *cur, /* btree cursor */ + xfs_agino_t ino, /* starting inode of chunk */ + __int32_t fcnt, /* free inode count */ + xfs_inofree_t free, /* free inode mask */ + int *stat) /* success/failure */ +{ + cur->bc_rec.i.ir_startino = ino; + cur->bc_rec.i.ir_freecount = fcnt; + cur->bc_rec.i.ir_free = free; + return xfs_btree_lookup(cur, XFS_LOOKUP_LE, stat); +} + +/* * Allocate new inodes in the allocation group specified by agbp. * Return 0 for success, else error code. */ |