The patch titled
Subject: slub: remove useless kmem_cache_debug() before remove_full()
has been added to the -mm tree. Its filename is
slub-remove-useless-kmem_cache_debug-before-remove_full.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/slub-remove-useless-kmem_cache_debug-before-remove_full.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/slub-remove-useless-kmem_cache_debug-before-remove_full.patch
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The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Liu Xiang <liu.xiang6@xxxxxxxxxx>
Subject: slub: remove useless kmem_cache_debug() before remove_full()
When CONFIG_SLUB_DEBUG is not enabled, remove_full() is empty.
While CONFIG_SLUB_DEBUG is enabled, remove_full() can check
s->flags by itself. So kmem_cache_debug() is useless and
can be removed.
Link: http://lkml.kernel.org/r/1552577313-2830-1-git-send-email-liu.xiang6@xxxxxxxxxx
Signed-off-by: Liu Xiang <liu.xiang6@xxxxxxxxxx>
Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/slub.c~slub-remove-useless-kmem_cache_debug-before-remove_full
+++ a/mm/slub.c
@@ -2912,8 +2912,7 @@ static void __slab_free(struct kmem_cach
* then add it.
*/
if (!kmem_cache_has_cpu_partial(s) && unlikely(!prior)) {
- if (kmem_cache_debug(s))
- remove_full(s, n, page);
+ remove_full(s, n, page);
add_partial(n, page, DEACTIVATE_TO_TAIL);
stat(s, FREE_ADD_PARTIAL);
}
_
Patches currently in -mm which might be from liu.xiang6@xxxxxxxxxx are
slub-remove-useless-kmem_cache_debug-before-remove_full.patch
