lock_page_cgroup() disables preemption, remove explicit preemption
disabling for code paths holding this lock.
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxx>
---
mm/memcontrol.c | 15 ++++-----------
1 file changed, 4 insertions(+), 11 deletions(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 5b6b0039f725..393864c162ac 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -921,8 +921,6 @@ static void mem_cgroup_charge_statistics(struct mem_cgroup *memcg,
struct page *page,
bool anon, int nr_pages)
{
- preempt_disable();
-
/*
* Here, RSS means 'mapped anon' and anon's SwapCache. Shmem/tmpfs is
* counted as CACHE even if it's on ANON LRU.
@@ -947,8 +945,6 @@ static void mem_cgroup_charge_statistics(struct mem_cgroup *memcg,
}
__this_cpu_add(memcg->stat->nr_page_events, nr_pages);
-
- preempt_enable();
}
unsigned long
@@ -3780,17 +3776,14 @@ void mem_cgroup_split_huge_fixup(struct page *head)
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
-static inline
-void mem_cgroup_move_account_page_stat(struct mem_cgroup *from,
- struct mem_cgroup *to,
- unsigned int nr_pages,
- enum mem_cgroup_stat_index idx)
+static void mem_cgroup_move_account_page_stat(struct mem_cgroup *from,
+ struct mem_cgroup *to,
+ unsigned int nr_pages,
+ enum mem_cgroup_stat_index idx)
{
/* Update stat data for mem_cgroup */
- preempt_disable();
__this_cpu_sub(from->stat->count[idx], nr_pages);
__this_cpu_add(to->stat->count[idx], nr_pages);
- preempt_enable();
}
/**
--
1.9.0
--
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