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| author | Vladimir Davydov <vdavydov@parallels.com> | 2014-12-13 01:54:53 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-13 21:42:46 +0100 |
| commit | 9d100c5e470eaeee5809da289f22b0de165de6b2 (patch) | |
| tree | 1ae444940e47ef41586c1370aff451224117cfa5 | |
| parent | memcg: __mem_cgroup_free: remove stale disarm_static_keys comment (diff) | |
| download | linux-9d100c5e470eaeee5809da289f22b0de165de6b2.tar.xz linux-9d100c5e470eaeee5809da289f22b0de165de6b2.zip | |
memcg: don't check mm in __memcg_kmem_{get_cache,newpage_charge}
We already assured the current task has mm in memcg_kmem_should_charge,
no need to double check.
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/memcontrol.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index e8bf0fc356b2..37f345e64fda 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2856,7 +2856,7 @@ struct kmem_cache *__memcg_kmem_get_cache(struct kmem_cache *cachep, VM_BUG_ON(!cachep->memcg_params); VM_BUG_ON(!cachep->memcg_params->is_root_cache); - if (!current->mm || current->memcg_kmem_skip_account) + if (current->memcg_kmem_skip_account) return cachep; rcu_read_lock(); @@ -2942,7 +2942,7 @@ __memcg_kmem_newpage_charge(gfp_t gfp, struct mem_cgroup **_memcg, int order) * allocations are extremely rare but can happen, for instance, for the * cache arrays. We bring this test here. */ - if (!current->mm || current->memcg_kmem_skip_account) + if (current->memcg_kmem_skip_account) return true; memcg = get_mem_cgroup_from_mm(current->mm); |