From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 1 Dec 2009 13:02:00 +0000 (+0100)
Subject: futex: Protect pid lookup in compat code with RCU
X-Git-Tag: v2.6.34-rc1~244^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f409adf5b1db55ece7e80b67a944f9c0d3fe93e9;p=pandora-kernel.git

futex: Protect pid lookup in compat code with RCU

find_task_by_vpid() in compat_sys_get_robust_list() does not require
tasklist_lock. It can be protected with rcu_read_lock as done in
sys_get_robust_list() already.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Darren Hart <dvhltc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
---

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