On Fri 27-04-12 01:48:19, Johannes Weiner wrote:
[...]
> From: Johannes Weiner <hannes@xxxxxxxxxxx>
> Subject: [patch] mm: memcg: clean up mm_match_cgroup() signature
>
> It really should return a boolean for match/no match. And since it
> takes a memcg, not a cgroup, fix that parameter name as well.
>
> Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxx>
> ---
> include/linux/memcontrol.h | 14 +++++++-------
> 1 files changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
> index 76f9d9b..d3038a9 100644
> --- a/include/linux/memcontrol.h
> +++ b/include/linux/memcontrol.h
> @@ -89,14 +89,14 @@ extern struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *memcg);
> extern struct mem_cgroup *mem_cgroup_from_cont(struct cgroup *cont);
>
> static inline
> -int mm_match_cgroup(const struct mm_struct *mm, const struct mem_cgroup *cgroup)
> +bool mm_match_cgroup(const struct mm_struct *mm, const struct mem_cgroup *memcg)
> {
> - struct mem_cgroup *memcg;
> - int match;
> + struct mem_cgroup *task_memcg;
> + bool match;
>
> rcu_read_lock();
> - memcg = mem_cgroup_from_task(rcu_dereference((mm)->owner));
> - match = memcg && __mem_cgroup_same_or_subtree(cgroup, memcg);
> + task_memcg = mem_cgroup_from_task(rcu_dereference((mm)->owner));
> + match = task_memcg && __mem_cgroup_same_or_subtree(memcg, task_memcg);
> rcu_read_unlock();
> return match;
> }
> @@ -281,10 +281,10 @@ static inline struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm
> return NULL;
> }
>
> -static inline int mm_match_cgroup(struct mm_struct *mm,
> +static inline bool mm_match_cgroup(struct mm_struct *mm,
> struct mem_cgroup *memcg)
> {
> - return 1;
> + return true;
> }
>
> static inline int task_in_mem_cgroup(struct task_struct *task,
> --
> 1.7.7.6
>
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--
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9
Czech Republic
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