leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

cls_cgroup: remove unneeded cgroup_lock

Browse Source 
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>
This commit is contained in:
Li Zefan 2009-05-12 10:47:33 +00:00 committed by David S. Miller
parent 3a6d54c563
commit cb1c4b71f6
1 changed files with 0 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
net/sched/cls_cgroup.c
View File

@ -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;
}