Quoting Aristeu Rozanski (aris@xxxxxxxxxx):
> This function cleans all the items in a whitelist and will be used by the next
> patches.
>
> v2:
> - no changes
>
> Cc: Tejun Heo <tj@xxxxxxxxxx>
> Cc: Li Zefan <lizefan@xxxxxxxxxx>
> Cc: James Morris <jmorris@xxxxxxxxx>
> Cc: Pavel Emelyanov <xemul@xxxxxxxxxx>
> Cc: Serge Hallyn <serge.hallyn@xxxxxxxxxxxxx>
Acked-by: Serge Hallyn <serge.hallyn@xxxxxxxxxxxxx>
> Signed-off-by: Aristeu Rozanski <aris@xxxxxxxxxx>
>
> ---
> security/device_cgroup.c | 22 +++++++++++++++++-----
> 1 file changed, 17 insertions(+), 5 deletions(-)
>
> Index: github/security/device_cgroup.c
> ===================================================================
> --- github.orig/security/device_cgroup.c 2012-08-21 10:50:34.650810797 -0400
> +++ github/security/device_cgroup.c 2012-08-21 10:50:37.526892088 -0400
> @@ -157,6 +157,22 @@
> }
> }
>
> +/**
> + * 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.
> */
> @@ -203,13 +219,9 @@
> 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);
> }
>
>
> --
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