The patch titled
Subject: mm: kmem: remove redundant checks from get_obj_cgroup_from_current()
has been removed from the -mm tree. Its filename was
mm-kmem-remove-redundant-checks-from-get_obj_cgroup_from_current.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Roman Gushchin <guro@xxxxxx>
Subject: 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.
Link: http://lkml.kernel.org/r/20200827225843.1270629-3-guro@xxxxxx
Signed-off-by: Roman Gushchin <guro@xxxxxx>
Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 3 ---
1 file changed, 3 deletions(-)
--- a/mm/memcontrol.c~mm-kmem-remove-redundant-checks-from-get_obj_cgroup_from_current
+++ a/mm/memcontrol.c
@@ -2939,9 +2939,6 @@ __always_inline struct obj_cgroup *get_o
if (memcg_kmem_bypass())
return NULL;
- if (unlikely(!current->mm && !current->active_memcg))
- return NULL;
-
rcu_read_lock();
if (unlikely(current->active_memcg))
memcg = rcu_dereference(current->active_memcg);
_
Patches currently in -mm which might be from guro@xxxxxx are
mm-vmstat-fix-proc-sys-vm-stat_refresh-generating-false-warnings.patch
mm-vmstat-fix-proc-sys-vm-stat_refresh-generating-false-warnings-fix.patch
