tree 4efc95eb0aaade090bac42e72c5973ada6d2cdb1
parent 76d3fbf8fbf6cc78ceb63549e0e0c5bc8a88f838
author Konstantin Khlebnikov <khlebnikov@openvz.org> 1311639151 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1311652631 -0700

mm: remove useless rcu lock-unlock from mapping_tagged()

radix_tree_tagged() is lockless - it reads from a member of the raid-tree
root node.  It does not require any protection.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>