Commit 67f02864 authored by Roman Gushchin's avatar Roman Gushchin Committed by Linus Torvalds

mm: kmem: remove redundant checks from get_obj_cgroup_from_current()

There are checks for current->mm and current->active_memcg in
get_obj_cgroup_from_current(), but these checks are redundant:
memcg_kmem_bypass() called just above performs same checks.
Signed-off-by: default avatarRoman Gushchin <guro@fb.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Reviewed-by: default avatarShakeel Butt <shakeelb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Link: http://lkml.kernel.org/r/20200827225843.1270629-3-guro@fb.comSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 279c3393
...@@ -2939,9 +2939,6 @@ __always_inline struct obj_cgroup *get_obj_cgroup_from_current(void) ...@@ -2939,9 +2939,6 @@ __always_inline struct obj_cgroup *get_obj_cgroup_from_current(void)
if (memcg_kmem_bypass()) if (memcg_kmem_bypass())
return NULL; return NULL;
if (unlikely(!current->mm && !current->active_memcg))
return NULL;
rcu_read_lock(); rcu_read_lock();
if (unlikely(current->active_memcg)) if (unlikely(current->active_memcg))
memcg = rcu_dereference(current->active_memcg); memcg = rcu_dereference(current->active_memcg);
......
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