From: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Date: Thu, 29 Mar 2012 20:58:17 +0000 (-0700)
Subject: pagemap: remove remaining unneeded spin_lock()
X-Git-Tag: v3.4-rc1~47^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=10bdfb5ef7e1a429a3de31e498942a8ae5749a46;p=pandora-kernel.git

pagemap: remove remaining unneeded spin_lock()

Commit 025c5b2451e4 ("thp: optimize away unnecessary page table
locking") moves spin_lock() into pmd_trans_huge_lock() in order to avoid
locking unless pmd is for thp.  So this spin_lock() is a bug.

Reported-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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