From: Zeng Zhaoming <zengzm.kernel@gmail.com>
Date: Thu, 2 Dec 2010 22:31:13 +0000 (-0800)
Subject: mm/mempolicy.c: add rcu read lock to protect pid structure
X-Git-Tag: v2.6.37-rc5~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=55cfaa3cbdd29c4919ecb5fb8965c310f357e48c;p=pandora-kernel.git

mm/mempolicy.c: add rcu read lock to protect pid structure

find_task_by_vpid() should be protected by rcu_read_lock(), to prevent
free_pid() reclaiming pid.

Signed-off-by: Zeng Zhaoming <zengzm.kernel@gmail.com>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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