diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/memcontrol.h | 50 | ||||
| -rw-r--r-- | include/linux/sched.h | 7 |
2 files changed, 14 insertions, 43 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index ecc82b37c4cc..b3e7a667e03c 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -137,47 +137,24 @@ extern void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, extern void mem_cgroup_replace_page_cache(struct page *oldpage, struct page *newpage); -/** - * mem_cgroup_toggle_oom - toggle the memcg OOM killer for the current task - * @new: true to enable, false to disable - * - * Toggle whether a failed memcg charge should invoke the OOM killer - * or just return -ENOMEM. Returns the previous toggle state. - * - * NOTE: Any path that enables the OOM killer before charging must - * call mem_cgroup_oom_synchronize() afterward to finalize the - * OOM handling and clean up. - */ -static inline bool mem_cgroup_toggle_oom(bool new) +static inline void mem_cgroup_oom_enable(void) { - bool old; - - old = current->memcg_oom.may_oom; - current->memcg_oom.may_oom = new; - - return old; + WARN_ON(current->memcg_oom.may_oom); + current->memcg_oom.may_oom = 1; } -static inline void mem_cgroup_enable_oom(void) +static inline void mem_cgroup_oom_disable(void) { - bool old = mem_cgroup_toggle_oom(true); - - WARN_ON(old == true); -} - -static inline void mem_cgroup_disable_oom(void) -{ - bool old = mem_cgroup_toggle_oom(false); - - WARN_ON(old == false); + WARN_ON(!current->memcg_oom.may_oom); + current->memcg_oom.may_oom = 0; } static inline bool task_in_memcg_oom(struct task_struct *p) { - return p->memcg_oom.in_memcg_oom; + return p->memcg_oom.memcg; } -bool mem_cgroup_oom_synchronize(void); +bool mem_cgroup_oom_synchronize(bool wait); #ifdef CONFIG_MEMCG_SWAP extern int do_swap_account; @@ -402,16 +379,11 @@ static inline void mem_cgroup_end_update_page_stat(struct page *page, { } -static inline bool mem_cgroup_toggle_oom(bool new) -{ - return false; -} - -static inline void mem_cgroup_enable_oom(void) +static inline void mem_cgroup_oom_enable(void) { } -static inline void mem_cgroup_disable_oom(void) +static inline void mem_cgroup_oom_disable(void) { } @@ -420,7 +392,7 @@ static inline bool task_in_memcg_oom(struct task_struct *p) return false; } -static inline bool mem_cgroup_oom_synchronize(void) +static inline bool mem_cgroup_oom_synchronize(bool wait) { return false; } diff --git a/include/linux/sched.h b/include/linux/sched.h index 6682da36b293..e27baeeda3f4 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1394,11 +1394,10 @@ struct task_struct { } memcg_batch; unsigned int memcg_kmem_skip_account; struct memcg_oom_info { + struct mem_cgroup *memcg; + gfp_t gfp_mask; + int order; unsigned int may_oom:1; - unsigned int in_memcg_oom:1; - unsigned int oom_locked:1; - int wakeups; - struct mem_cgroup *wait_on_memcg; } memcg_oom; #endif #ifdef CONFIG_UPROBES |