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| author | Li Zefan <lizf@cn.fujitsu.com> | 2008-09-02 23:35:52 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-09-03 04:21:38 +0200 |
| commit | 36fd71d293898a59b14e49da1f6e81c1a58f2035 (patch) | |
| tree | e67d5a0f6fc6caa83558f57588d9f69a46e5f4c9 /fs | |
| parent | cirrusfb: check_par fixes (diff) | |
| download | linux-36fd71d293898a59b14e49da1f6e81c1a58f2035.tar.xz linux-36fd71d293898a59b14e49da1f6e81c1a58f2035.zip | |
devcgroup: fix race against rmdir()
During the use of a dev_cgroup, we should guarantee the corresponding
cgroup won't be deleted (i.e. via rmdir). This can be done through
css_get(&dev_cgroup->css), but here we can just get and use the dev_cgroup
under rcu_read_lock.
And also remove checking NULL dev_cgroup, it won't be NULL since a task
always belongs to a cgroup.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Cc: 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 'fs')
0 files changed, 0 insertions, 0 deletions