diff options
Diffstat (limited to 'include/linux/sched/mm.h')
| -rw-r--r-- | include/linux/sched/mm.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h index 4e1411bbbcfc..1548c3d61fdc 100644 --- a/include/linux/sched/mm.h +++ b/include/linux/sched/mm.h @@ -206,6 +206,30 @@ static inline void memalloc_noreclaim_restore(unsigned int flags) current->flags = (current->flags & ~PF_MEMALLOC) | flags; } +#ifdef CONFIG_MEMCG +static inline struct mem_cgroup *memalloc_memcg_save(struct mem_cgroup *memcg) +{ + struct mem_cgroup *old_memcg = current->target_memcg; + + current->target_memcg = memcg; + return old_memcg; +} + +static inline void memalloc_memcg_restore(struct mem_cgroup *memcg) +{ + current->target_memcg = memcg; +} +#else +static inline struct mem_cgroup *memalloc_memcg_save(struct mem_cgroup *memcg) +{ + return NULL; +} + +static inline void memalloc_memcg_restore(struct mem_cgroup *memcg) +{ +} +#endif /* CONFIG_MEMCG */ + #ifdef CONFIG_MEMBARRIER enum { MEMBARRIER_STATE_PRIVATE_EXPEDITED_READY = (1U << 0), |