diff options
| -rw-r--r-- | lib/radix-tree.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/lib/radix-tree.c b/lib/radix-tree.c index 2e9bd54beba4..b972dd29289d 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -418,15 +418,16 @@ EXPORT_SYMBOL(radix_tree_tag_clear); #ifndef __KERNEL__ /* Only the test harness uses this at present */ /** - * radix_tree_tag_get - get a tag on a radix tree node - * @root: radix tree root - * @index: index key - * @tag: tag index + * radix_tree_tag_get - get a tag on a radix tree node + * @root: radix tree root + * @index: index key + * @tag: tag index * - * Return the search tag corresponging to @index in the radix tree. + * Return values: * - * Returns zero if the tag is unset, or if there is no corresponding item - * in the tree. + * 0: tag not present + * 1: tag present, set + * -1: tag present, unset */ int radix_tree_tag_get(struct radix_tree_root *root, unsigned long index, int tag) @@ -460,7 +461,7 @@ int radix_tree_tag_get(struct radix_tree_root *root, int ret = tag_get(slot, tag, offset); BUG_ON(ret && saw_unset_tag); - return ret; + return ret ? 1 : -1; } slot = slot->slots[offset]; shift -= RADIX_TREE_MAP_SHIFT; |