From: Lai Jiangshan <laijs@cn.fujitsu.com>
Date: Thu, 29 Nov 2012 08:46:03 +0000 (+0800)
Subject: srcu: Add might_sleep() annotation to synchronize_srcu()
X-Git-Tag: v3.9-rc1~175^2^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6e6f1b307e23201fb3e7aaf16322e80355d2a3d5;p=pandora-kernel.git

srcu: Add might_sleep() annotation to synchronize_srcu()

Although synchronize_srcu() can sleep, it will not sleep if the fast
path succeeds, which means that illegal use of synchronize_rcu()
might go unnoticed.  This commit therefore adds might_sleep(), which
unconditionally catches illegal use of synchronize_rcu() from atomic
context.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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