Messages in this thread Patch in this message | | | Subject | [PATCH] vfs: remove rcu lock-unlock from mapping_tagged() | From | Konstantin Khlebnikov <> | Date | Sat, 2 Apr 2011 18:09:53 +0400 |
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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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