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| author | Li Zefan <lizf@cn.fujitsu.com> | 2009-04-02 16:57:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-02 19:04:54 -0700 |
| commit | d969fbe69e07fcceb0558b35d4c75eb046041c5e (patch) | |
| tree | e93bab346a32b061522a946fe3a012155c59c27c /kernel/cgroup_debug.c | |
| parent | 0670e08bdfc67272f8c3087030417465629b8073 (diff) | |
| download | linux-d969fbe69e07fcceb0558b35d4c75eb046041c5e.tar.bz2 | |
debug cgroup: remove unneeded cgroup_lock
Since we are in cgroup write handler, so the cgrp is valid, so we don't
have to hold cgroup_mutex when calling cgroup_task_count(). One similar
example is in cgroup_tasks_open().
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/cgroup_debug.c')
| -rw-r--r-- | kernel/cgroup_debug.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/cgroup_debug.c b/kernel/cgroup_debug.c index daca6209202d..0c92d797baa6 100644 --- a/kernel/cgroup_debug.c +++ b/kernel/cgroup_debug.c @@ -40,9 +40,7 @@ static u64 taskcount_read(struct cgroup *cont, struct cftype *cft) { u64 count; - cgroup_lock(); count = cgroup_task_count(cont); - cgroup_unlock(); return count; } |