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radix-tree: Add radix_tree_iter_tag_clear()

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The counterpart to radix_tree_iter_tag_set(), used by the IDR code

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
This commit is contained in:
Matthew Wilcox
2017-01-28 09:55:20 -05:00
parent bfa11193c4
commit 30b888ba95
2 changed files with 43 additions and 29 deletions
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4
include/linux/radix-tree.h
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@@ -332,7 +332,9 @@ void *radix_tree_tag_clear(struct radix_tree_root *root,
unsigned long index, unsigned int tag);
int radix_tree_tag_get(const struct radix_tree_root *,
unsigned long index, unsigned int tag);
void radix_tree_iter_tag_set(struct radix_tree_root *root,
void radix_tree_iter_tag_set(struct radix_tree_root *,
const struct radix_tree_iter *iter, unsigned int tag);
void radix_tree_iter_tag_clear(struct radix_tree_root *,
const struct radix_tree_iter *iter, unsigned int tag);
unsigned int
radix_tree_gang_lookup_tag(const struct radix_tree_root *, void **results,