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authorJan Kara <jack@suse.cz>2010-08-09 17:19:11 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-09 20:44:59 -0700
commitebf8aa44beed48cd17893a83d92a4403e5f9d9e2 (patch)
tree03607aa1cdbbb7fda935edb28bb3ad06423852ac /include
parent44ab57a06ded284db6ccdefc6b76eddb1c34d7ed (diff)
radix-tree: omplement function radix_tree_range_tag_if_tagged
Implement function for setting one tag if another tag is set for each item in given range. Signed-off-by: Jan Kara <jack@suse.cz> Cc: Dave Chinner <david@fromorbit.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Chris Mason <chris.mason@oracle.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/radix-tree.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h
index 55ca73cf25e5..a4b00e9cca90 100644
--- a/include/linux/radix-tree.h
+++ b/include/linux/radix-tree.h
@@ -192,6 +192,10 @@ unsigned int
radix_tree_gang_lookup_tag_slot(struct radix_tree_root *root, void ***results,
unsigned long first_index, unsigned int max_items,
unsigned int tag);
+unsigned long radix_tree_range_tag_if_tagged(struct radix_tree_root *root,
+ unsigned long *first_indexp, unsigned long last_index,
+ unsigned long nr_to_tag,
+ unsigned int fromtag, unsigned int totag);
int radix_tree_tagged(struct radix_tree_root *root, unsigned int tag);
static inline void radix_tree_preload_end(void)