Commit cb1c4b71 authored May 12, 2009 by Li Zefan Committed by David S. Miller May 17, 2009

cls_cgroup: remove unneeded cgroup_lock



We can remove this lock here, since we are in cgroup write handler and
thus the cgrp is guaranteed to be valid, and no lock is needed when
writing a u32 variable.

Signed-off-by: Li Zefan <lizf@cn.fujitsuc.com>
Acked-by: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 3a6d54c5

net/sched/cls_cgroup.c

+0 −6

Original line number	Diff line number	Diff line
		@@ -62,13 +62,7 @@ static u64 read_classid(struct cgroup cgrp, struct cftype cft)

		static int write_classid(struct cgroup cgrp, struct cftype cft, u64 value)
		{
		if (!cgroup_lock_live_group(cgrp))
		return -ENODEV;

		cgrp_cls_state(cgrp)->classid = (u32) value;

		cgroup_unlock();

		return 0;
		}