From: Mandeep Singh Baines <msb@google.com>
Date: Thu, 5 Feb 2009 17:56:08 +0000 (-0800)
Subject: softlockup: convert read_lock in hung_task to rcu_read_lock
X-Git-Tag: v2.6.30-rc1~1^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=94be52dc075a32af4aa73d7e10f68734d62d6af2;p=pandora-kernel.git

softlockup: convert read_lock in hung_task to rcu_read_lock

Since the tasklist is protected by rcu list operations, it is safe
to convert the read_lock()s to rcu_read_lock().

Suggested-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Mandeep Singh Baines <msb@google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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