From 17cce771c5fc85f43680143ac8b3b944fdad113f Mon Sep 17 00:00:00 2001
From: Vlastimil Babka <vbabka@suse.cz>
Date: Fri, 1 Mar 2024 17:08:09 +0100
Subject: [PATCH] mm, slab: remove memcg_from_slab_obj()

This empty wrapped exists only for !CONFIG_MEMCG_KMEM and seems it was
never used. Probably a leftover from development of a series.

Reviewed-by: Chengming Zhou <chengming.zhou@linux.dev>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
---
 mm/slub.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index 12066e69688d..186a8ec28228 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2028,11 +2028,6 @@ void memcg_slab_alloc_error_hook(struct kmem_cache *s, int objects,
 		obj_cgroup_uncharge(objcg, objects * obj_full_size(s));
 }
 #else /* CONFIG_MEMCG_KMEM */
-static inline struct mem_cgroup *memcg_from_slab_obj(void *ptr)
-{
-	return NULL;
-}
-
 static inline void memcg_free_slab_cgroups(struct slab *slab)
 {
 }