В Пн, 25/05/2015 в 17:05 +0300, Vladimir Davydov пишет:
> This is neater than checking if the root is passed to the write method
> and this is how it works upstream (for memory.low).
>
> Signed-off-by: Vladimir Davydov <[email protected]>
> ---
> mm/memcontrol.c | 8 ++------
> 1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 0ca9cdff8c83..144a2720b604 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -5192,9 +5192,6 @@ static int mem_cgroup_low_write(struct cgroup *cont,
> struct cftype *cft,
> unsigned long long val;
> int ret;
>
> - if (mem_cgroup_is_root(memcg))
> - return -EINVAL;
> -
> ret = res_counter_memparse_write_strategy(buffer, &val);
> if (ret)
> return ret;
> @@ -5222,9 +5219,6 @@ static int mem_cgroup_oom_guarantee_write(struct cgroup
> *cont,
I can't find this function in memcontrol.c. Which series this series goes after?
> unsigned long long val;
> int ret;
>
> - if (mem_cgroup_is_root(memcg))
> - return -EINVAL;
> -
> ret = res_counter_memparse_write_strategy(buffer, &val);
> if (ret)
> return ret;
> @@ -6118,6 +6112,7 @@ static struct cftype mem_cgroup_files[] = {
> },
> {
> .name = "low",
> + .flags = CFTYPE_NOT_ON_ROOT,
> .write_string = mem_cgroup_low_write,
> .read = mem_cgroup_low_read,
> },
> @@ -6161,6 +6156,7 @@ static struct cftype mem_cgroup_files[] = {
> },
> {
> .name = "oom_guarantee",
> + .flags = CFTYPE_NOT_ON_ROOT,
> .write_string = mem_cgroup_oom_guarantee_write,
> .read = mem_cgroup_oom_guarantee_read,
> },
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