From: Paul E. McKenney Date: Thu, 20 Sep 2012 23:59:47 +0000 (-0700) Subject: rcu: Fix comment about _rcu_barrier()/orphanage exclusion X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~79^2^2~4^6~19 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=abfd6e58aed4f89fd69b9b17bc4b4527efe3a645;p=pandora-kernel.git rcu: Fix comment about _rcu_barrier()/orphanage exclusion In the old days, _rcu_barrier() acquired ->onofflock to exclude rcu_send_cbs_to_orphanage(), which allowed the latter to avoid memory barriers in callback handling. However, _rcu_barrier() recently started doing get_online_cpus() to lock out CPU-hotplug operations entirely, which means that the comment in rcu_send_cbs_to_orphanage() that talks about ->onofflock is now obsolete. This commit therefore fixes the comment. Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney --- Reading git-diff-tree failed