From: Konstantin Khlebnikov <khlebnikov@openvz.org>
Date: Tue, 26 Jul 2011 00:12:31 +0000 (-0700)
Subject: mm: remove useless rcu lock-unlock from mapping_tagged()
X-Git-Tag: v3.1-rc1~241^2~77
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=72c4783210f77fd743f0a316858d33f27db51e7c;p=pandora-kernel.git

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>
---

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