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btree: export btree_get_prev() so modules can use btree_for_each 

The btree_for_each API is implemented with macros that internally call
btree_get_prev(), so if btree_get_prev() isn't exported then modules fail
to link if they try to use one of the btree_for_each macros.  Since the
rest of the btree API is exported, we should keep things orthogonal and
make this work too.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Steve Hodgson <steve@purestorage.com>
Acked-by: Joern Engel <joern@logfs.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Steve Hodgson 2012-01-10 15:09:47 -08:00 committed by Linus Torvalds
parent c957b614bd
commit 96b62067f9
1 changed files with 1 additions and 0 deletions
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lib/btree.c
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@ -357,6 +357,7 @@ miss:
} }
return NULL; return NULL;
} }
EXPORT_SYMBOL_GPL(btree_get_prev);
static int getpos(struct btree_geo *geo, unsigned long *node, static int getpos(struct btree_geo *geo, unsigned long *node,
unsigned long *key) unsigned long *key)