Quoting aris@xxxxxxxxxx (aris@xxxxxxxxxx):
> This patch is in preparation for hierarchy support
>
> This patch doesn't introduce any functional changes.
>
> Acked-by: Tejun Heo <tj@xxxxxxxxxx>
> Cc: Tejun Heo <tj@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 | 18 ++++++++++++++----
> 1 file changed, 14 insertions(+), 4 deletions(-)
>
> --- github.orig/security/device_cgroup.c 2013-01-29 11:49:16.076677425 -0500
> +++ github/security/device_cgroup.c 2013-01-29 11:49:16.374681863 -0500
> @@ -89,20 +89,30 @@ static int devcgroup_can_attach(struct c
> return 0;
> }
>
> +static int dev_exception_copy(struct list_head *dest,
> + struct dev_exception_item *ex)
> +{
> + struct dev_exception_item *new;
> +
> + new = kmemdup(ex, sizeof(*ex), GFP_KERNEL);
> + if (!new)
> + return -ENOMEM;
> + list_add_tail(&new->list, dest);
> + return 0;
> +}
> +
> /*
> * called under devcgroup_mutex
> */
> static int dev_exceptions_copy(struct list_head *dest, struct list_head *orig)
> {
> - struct dev_exception_item *ex, *tmp, *new;
> + struct dev_exception_item *ex, *tmp;
>
> lockdep_assert_held(&devcgroup_mutex);
>
> list_for_each_entry(ex, orig, list) {
> - new = kmemdup(ex, sizeof(*ex), GFP_KERNEL);
> - if (!new)
> + if (dev_exception_copy(dest, ex))
> goto free_and_exit;
> - list_add_tail(&new->list, dest);
> }
>
> return 0;
>
> --
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