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authorChristoph Hellwig <hch@infradead.org>2008-10-30 16:56:09 +1100
committerLachlan McIlroy <lachlan@sgi.com>2008-10-30 16:56:09 +1100
commitfe033cc848489851f0c7de48f0b1bab5d744ad8a (patch)
treef69709f4e9c125c528a699c32f439b53ea0969f3 /fs/xfs/xfs_btree.h
parent8df4da4a0a642d3a016028c0d922bcb4d5a4a6d7 (diff)
downloadop-kernel-dev-fe033cc848489851f0c7de48f0b1bab5d744ad8a.zip
op-kernel-dev-fe033cc848489851f0c7de48f0b1bab5d744ad8a.tar.gz
[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.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
index 52b2da6..c151175 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.
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