diff options
| author | Aristeu Rozanski <aris@redhat.com> | 2012-10-04 17:15:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-06 03:05:14 +0900 |
| commit | 868539a3b671e0f736ddd11b67bf1dc3d8a5a921 (patch) | |
| tree | 2c2c10e2983c40ffad02fb01d55fad6f4a6b3175 /security | |
| parent | 66b8ef67756b3051bf42a077a82c3c5c279caa5b (diff) | |
| download | lwn-868539a3b671e0f736ddd11b67bf1dc3d8a5a921.tar.gz lwn-868539a3b671e0f736ddd11b67bf1dc3d8a5a921.zip | |
device_cgroup: introduce dev_whitelist_clean()
This function cleans all the items in a whitelist and will be used by the next
patches.
Signed-off-by: Aristeu Rozanski <aris@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: James Morris <jmorris@namei.org>
Cc: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Serge E. Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'security')
| -rw-r--r-- | security/device_cgroup.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/security/device_cgroup.c b/security/device_cgroup.c index e3ce02a00ffc..5b36b62e9ff4 100644 --- a/security/device_cgroup.c +++ b/security/device_cgroup.c @@ -154,6 +154,22 @@ remove: } } +/** + * dev_whitelist_clean - frees all entries of the whitelist + * @dev_cgroup: dev_cgroup with the whitelist to be cleaned + * + * called under devcgroup_mutex + */ +static void dev_whitelist_clean(struct dev_cgroup *dev_cgroup) +{ + struct dev_whitelist_item *wh, *tmp; + + list_for_each_entry_safe(wh, tmp, &dev_cgroup->whitelist, list) { + list_del(&wh->list); + kfree(wh); + } +} + /* * called from kernel/cgroup.c with cgroup_lock() held. */ @@ -200,13 +216,9 @@ static struct cgroup_subsys_state *devcgroup_create(struct cgroup *cgroup) static void devcgroup_destroy(struct cgroup *cgroup) { struct dev_cgroup *dev_cgroup; - struct dev_whitelist_item *wh, *tmp; dev_cgroup = cgroup_to_devcgroup(cgroup); - list_for_each_entry_safe(wh, tmp, &dev_cgroup->whitelist, list) { - list_del(&wh->list); - kfree(wh); - } + dev_whitelist_clean(dev_cgroup); kfree(dev_cgroup); } |