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authorChristoph Hellwig <hch@infradead.org>2008-10-30 16:56:43 +1100
committerLachlan McIlroy <lachlan@sgi.com>2008-10-30 16:56:43 +1100
commit9eaead51bed957af0070a277d945744a76df0c8b (patch)
tree7b0679186c06f366c7aed30873e3395bd414953e /fs/xfs/xfs_btree.h
parent278d0ca14e889c3932a05d1a68675252a12b3466 (diff)
[XFS] implement generic xfs_btree_rshift
Make the btree right shift code generic. Based on a patch from David Chinner with lots of changes to follow the original btree implementations more closely. While this loses some of the generic helper routines for inserting/moving/removing records it also solves some of the one off bugs in the original code and makes it easier to verify. SGI-PV: 985583 SGI-Modid: xfs-linux-melb:xfs-kern:32196a 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.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
index c3bfa5556c1..04311dbeff1 100644
--- a/fs/xfs/xfs_btree.h
+++ b/fs/xfs/xfs_btree.h
@@ -533,6 +533,7 @@ int xfs_btree_decrement(struct xfs_btree_cur *, int, int *);
int xfs_btree_lookup(struct xfs_btree_cur *, xfs_lookup_t, int *);
int xfs_btree_updkey(struct xfs_btree_cur *, union xfs_btree_key *, int);
int xfs_btree_update(struct xfs_btree_cur *, union xfs_btree_rec *);
+int xfs_btree_rshift(struct xfs_btree_cur *, int, int *);
/*
* Helpers.
@@ -542,6 +543,12 @@ static inline int xfs_btree_get_numrecs(struct xfs_btree_block *block)
return be16_to_cpu(block->bb_numrecs);
}
+static inline void xfs_btree_set_numrecs(struct xfs_btree_block *block,
+ __uint16_t numrecs)
+{
+ block->bb_numrecs = cpu_to_be16(numrecs);
+}
+
static inline int xfs_btree_get_level(struct xfs_btree_block *block)
{
return be16_to_cpu(block->bb_level);