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| author | Christoph Hellwig <hch@infradead.org> | 2008-10-30 06:55:45 +0100 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@sgi.com> | 2008-10-30 06:55:45 +0100 |
| commit | 637aa50f461b8ea6b1e8bf9877b0d13d00085043 (patch) | |
| tree | a7c00b821dca04fe90614461749b74eff40bd8ed /fs/xfs/xfs_btree.h | |
| parent | [XFS] add helpers for addressing entities inside a btree block (diff) | |
| download | linux-637aa50f461b8ea6b1e8bf9877b0d13d00085043.tar.xz linux-637aa50f461b8ea6b1e8bf9877b0d13d00085043.zip | |
[XFS] implement generic xfs_btree_increment
From: Dave Chinner <dgc@sgi.com>
Because this is the first major generic btree routine this patch includes
some infrastrucure, first a few routines to deal with a btree block that
can be either in short or long form, second xfs_btree_read_buf_block,
which is the new central routine to read a btree block given a cursor, and
third the new xfs_btree_ptr_addr routine to calculate the address for a
given btree pointer record.
[hch: split out from bigger patch and minor adaptions]
SGI-PV: 985583
SGI-Modid: xfs-linux-melb:xfs-kern:32190a
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 | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h index 593f82b01b6f..f5a4b8ec4cdd 100644 --- a/fs/xfs/xfs_btree.h +++ b/fs/xfs/xfs_btree.h @@ -503,8 +503,18 @@ xfs_btree_setbuf( /* + * Common btree core entry points. + */ +int xfs_btree_increment(struct xfs_btree_cur *, int, int *); + +/* * Helpers. */ +static inline int xfs_btree_get_numrecs(struct xfs_btree_block *block) +{ + return be16_to_cpu(block->bb_numrecs); +} + static inline int xfs_btree_get_level(struct xfs_btree_block *block) { return be16_to_cpu(block->bb_level); |