+ mm-memcontrol-remove-redundant-null-check.patch added to -mm tree

+ mm-memcontrol-remove-redundant-null-check.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/memcontrol: remove redundant NULL check
has been added to the -mm tree.  Its filename is
     mm-memcontrol-remove-redundant-null-check.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-memcontrol-remove-redundant-null-check.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-memcontrol-remove-redundant-null-check.patch

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------------------------------------------------------
From: Yang Li <abaci-bugfix@linux.alibaba.com>
Subject: mm/memcontrol: remove redundant NULL check

Fix below warnings reported by coccicheck:
./mm/memcontrol.c:451:3-9: WARNING: NULL check before some freeing
functions is not needed.

Link: https://lkml.kernel.org/r/1611216029-34397-1-git-send-email-abaci-bugfix@linux.alibaba.com
Signed-off-by: Yang Li <abaci-bugfix@linux.alibaba.com>
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memcontrol.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/mm/memcontrol.c~mm-memcontrol-remove-redundant-null-check
+++ a/mm/memcontrol.c
@@ -452,8 +452,7 @@ static void memcg_free_shrinker_maps(str
 	for_each_node(nid) {
 		pn = mem_cgroup_nodeinfo(memcg, nid);
 		map = rcu_dereference_protected(pn->shrinker_map, true);
-		if (map)
-			kvfree(map);
+		kvfree(map);
 		rcu_assign_pointer(pn->shrinker_map, NULL);
 	}
 }
_

Patches currently in -mm which might be from abaci-bugfix@linux.alibaba.com are

mm-memcontrol-remove-redundant-null-check.patch
vmalloc-remove-redundant-null-check.patch