Commit 9a4b4304 authored Feb 08, 2012 by Frederic Weisbecker Committed by Tejun Heo Feb 21, 2012

cgroup: Remove wrong comment on cgroup_enable_task_cg_list()



Remove the stale comment about RCU protection. Many callers
(all of them?) of cgroup_enable_task_cg_list() don't seem
to be in an RCU read side critical section. Besides, RCU is
not helpful to protect against while_each_thread().

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Mandeep Singh Baines <msb@chromium.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

parent 761b3ef5

kernel/cgroup.c

+0 −3

Original line number	Diff line number	Diff line
		@@ -2701,9 +2701,6 @@ static void cgroup_advance_iter(struct cgroup *cgrp,
		* using their cgroups capability, we don't maintain the lists running
		* through each css_set to its tasks until we see the list actually
		* used - in other words after the first call to cgroup_iter_start().
		*
		* The tasklist_lock is not held here, as do_each_thread() and
		* while_each_thread() are protected by RCU.
		*/
		static void cgroup_enable_task_cg_lists(void)
		{