diff options
| author | Wu Fengguang <[email protected]> | 2009-12-16 12:19:59 +0100 |
|---|---|---|
| committer | Andi Kleen <[email protected]> | 2009-12-16 12:19:59 +0100 |
| commit | d324236b3333e87c8825b35f2104184734020d35 (patch) | |
| tree | e8ad6b50e50f975b692cc6a15d5812a51d0047ad /include/linux | |
| parent | e42d9d5d47961fb5db0be65b56dd52fe7b2421f1 (diff) | |
memcg: add accessor to mem_cgroup.css
So that an outside user can free the reference count grabbed by
try_get_mem_cgroup_from_page().
CC: KOSAKI Motohiro <[email protected]>
CC: Hugh Dickins <[email protected]>
CC: Daisuke Nishimura <[email protected]>
CC: Balbir Singh <[email protected]>
Acked-by: KAMEZAWA Hiroyuki <[email protected]>
Signed-off-by: Wu Fengguang <[email protected]>
Signed-off-by: Andi Kleen <[email protected]>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/memcontrol.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index fc9bae82ac42..2c30a1116d84 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -81,6 +81,8 @@ int mm_match_cgroup(const struct mm_struct *mm, const struct mem_cgroup *cgroup) return cgroup == mem; } +extern struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem); + extern int mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr); extern void mem_cgroup_end_migration(struct mem_cgroup *mem, @@ -206,6 +208,11 @@ static inline int task_in_mem_cgroup(struct task_struct *task, return 1; } +static inline struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem) +{ + return NULL; +} + static inline int mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr) { |