From: Paul E. McKenney <paul.mckenney@linaro.org>
Date: Fri, 22 Jun 2012 03:50:42 +0000 (-0700)
Subject: rcu: Stop rcu_do_batch() from multiplexing the "count" variable
X-Git-Tag: v3.5-rc5~10^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b41772abebc27c61dd578b76da99aa5240b4c99a;p=pandora-kernel.git

rcu: Stop rcu_do_batch() from multiplexing the "count" variable

Commit b1420f1c (Make rcu_barrier() less disruptive) rearranged the
code in rcu_do_batch(), moving the ->qlen manipulation to follow
the requeueing of the callbacks.  Unfortunately, this rearrangement
clobbered the value of the "count" local variable before the value
of rdp->qlen was adjusted, resulting in the value of rdp->qlen being
inaccurate.  This commit therefore introduces an index variable "i",
avoiding the inadvertent multiplexing.

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
---

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