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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_btree.h | |
| parent | 8df4da4a0a642d3a016028c0d922bcb4d5a4a6d7 (diff) | |
| download | lwn-fe033cc848489851f0c7de48f0b1bab5d744ad8a.tar.gz lwn-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_btree.h')
| -rw-r--r-- | fs/xfs/xfs_btree.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h index 52b2da6ab32e..c151175a5fd0 100644 --- a/fs/xfs/xfs_btree.h +++ b/fs/xfs/xfs_btree.h @@ -190,6 +190,16 @@ struct xfs_btree_ops { /* records in block/level */ int (*get_maxrecs)(struct xfs_btree_cur *cur, int level); + /* init values of btree structures */ + void (*init_key_from_rec)(union xfs_btree_key *key, + union xfs_btree_rec *rec); + void (*init_ptr_from_cur)(struct xfs_btree_cur *cur, + union xfs_btree_ptr *ptr); + + /* difference between key value and cursor value */ + __int64_t (*key_diff)(struct xfs_btree_cur *cur, + union xfs_btree_key *key); + /* btree tracing */ #ifdef XFS_BTREE_TRACE void (*trace_enter)(struct xfs_btree_cur *, const char *, @@ -507,6 +517,7 @@ xfs_btree_setbuf( */ int xfs_btree_increment(struct xfs_btree_cur *, int, int *); int xfs_btree_decrement(struct xfs_btree_cur *, int, int *); +int xfs_btree_lookup(struct xfs_btree_cur *, xfs_lookup_t, int *); /* * Helpers. |