* [PATCH] vfs: remove rcu lock-unlock from mapping_tagged()
@ 2011-04-02 14:09 Konstantin Khlebnikov
0 siblings, 0 replies; only message in thread
From: Konstantin Khlebnikov @ 2011-04-02 14:09 UTC (permalink / raw)
To: Alexander Viro; +Cc: linux-kernel
radix_tree_tagged() does not require any locking.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
---
mm/page-writeback.c | 6 +-----
1 files changed, 1 insertions(+), 5 deletions(-)
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 31f6988..919b45e 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1405,10 +1405,6 @@ EXPORT_SYMBOL(test_set_page_writeback);
*/
int mapping_tagged(struct address_space *mapping, int tag)
{
- int ret;
- rcu_read_lock();
- ret = radix_tree_tagged(&mapping->page_tree, tag);
- rcu_read_unlock();
- return ret;
+ return radix_tree_tagged(&mapping->page_tree, tag);
}
EXPORT_SYMBOL(mapping_tagged);
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2011-04-02 14:09 [PATCH] vfs: remove rcu lock-unlock from mapping_tagged() Konstantin Khlebnikov
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