From 15999eef7f25e2ea6a1c33f026166f472c5714e9 Mon Sep 17 00:00:00 2001
From: Roman Gushchin <guro@fb.com>
Date: Thu, 6 Aug 2020 23:21:24 -0700
Subject: mm: memcg/slab: remove redundant check in memcg_accumulate_slabinfo()

memcg_accumulate_slabinfo() is never called with a non-root kmem_cache as
a first argument, so the is_root_cache(s) check is redundant and can be
removed without any functional change.

Signed-off-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/20200623174037.3951353-17-guro@fb.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 mm/slab_common.c | 3 ---
 1 file changed, 3 deletions(-)

(limited to 'mm/slab_common.c')

diff --git a/mm/slab_common.c b/mm/slab_common.c
index a9f6ab452ce5..ad67a03c592a 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -1104,9 +1104,6 @@ memcg_accumulate_slabinfo(struct kmem_cache *s, struct slabinfo *info)
 	struct kmem_cache *c;
 	struct slabinfo sinfo;
 
-	if (!is_root_cache(s))
-		return;
-
 	c = memcg_cache(s);
 	if (c) {
 		memset(&sinfo, 0, sizeof(sinfo));
-- 
cgit