diff options
| author | Roman Gushchin <[email protected]> | 2018-08-17 15:46:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2018-08-17 16:20:29 -0700 |
| commit | dc0b58643aff8b378086f25cce6789ccba68cbcb (patch) | |
| tree | 3fbf85c994eb3c030be3cbc7c1beef0910c12a71 | |
| parent | 1a9b4b3d75679fbe8c3bb8fb7e957ea693b6a89c (diff) | |
mm: introduce mem_cgroup_put() helper
Introduce the mem_cgroup_put() helper, which helps to eliminate guarding
memcg css release with "#ifdef CONFIG_MEMCG" in multiple places.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Roman Gushchin <[email protected]>
Reviewed-by: Shakeel Butt <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Acked-by: Johannes Weiner <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Acked-by: David Rientjes <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | include/linux/memcontrol.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 680d3395fc83..42f4719def32 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -378,6 +378,11 @@ struct mem_cgroup *mem_cgroup_from_css(struct cgroup_subsys_state *css){ return css ? container_of(css, struct mem_cgroup, css) : NULL; } +static inline void mem_cgroup_put(struct mem_cgroup *memcg) +{ + css_put(&memcg->css); +} + #define mem_cgroup_from_counter(counter, member) \ container_of(counter, struct mem_cgroup, member) @@ -850,6 +855,10 @@ static inline bool task_in_mem_cgroup(struct task_struct *task, return true; } +static inline void mem_cgroup_put(struct mem_cgroup *memcg) +{ +} + static inline struct mem_cgroup * mem_cgroup_iter(struct mem_cgroup *root, struct mem_cgroup *prev, |