From: Himangi Saraogi <himangi774@gmail.com>
Date: Wed, 12 Mar 2014 16:16:46 +0000 (+0530)
Subject: rcu: Protect uses of ->jiffies_stall with ACCESS_ONCE()
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~26^2^2~2^2~10
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=af952b919bf9e2cf3c4e839359cfd033d98aa011;p=pandora-kernel.git

rcu: Protect uses of ->jiffies_stall with ACCESS_ONCE()

Some of the accesses to the rcu_state structure's ->jiffies_stall
field are unprotected. This patch protects them with ACCESS_ONCE().
The following coccinelle script was used to acheive this:
/* coccinelle script to protect uses of ->jiffies_stall with ACCESS_ONCE() */
@@
identifier a;
@@
(
	ACCESS_ONCE(a->jiffies_stall)
|
-	a->jiffies_stall
+	ACCESS_ONCE(a->jiffies_stall)
)

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
---

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