The patch titled
Subject: mm/slub.c: freelist is ensured to be NULL when new_slab() fails
has been added to the -mm tree. Its filename is
mm-slubc-freelist-is-ensured-to-be-null-when-new_slab-fails.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-slubc-freelist-is-ensured-to-be-null-when-new_slab-fails.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-slubc-freelist-is-ensured-to-be-null-when-new_slab-fails.patch
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------------------------------------------------------
From: Peng Wang <rocking@xxxxxxxxxx>
Subject: mm/slub.c: freelist is ensured to be NULL when new_slab() fails
new_slab_objects() will return immediately if freelist is not NULL.
if (freelist)
return freelist;
One more assignment operation could be avoided.
Link: http://lkml.kernel.org/r/20181229062512.30469-1-rocking@xxxxxxxxxx
Signed-off-by: Peng Wang <rocking@xxxxxxxxxx>
Reviewed-by: Pekka Enberg <penberg@xxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/slub.c~mm-slubc-freelist-is-ensured-to-be-null-when-new_slab-fails
+++ a/mm/slub.c
@@ -2463,8 +2463,7 @@ static inline void *new_slab_objects(str
stat(s, ALLOC_SLAB);
c->page = page;
*pc = c;
- } else
- freelist = NULL;
+ }
return freelist;
}
_
Patches currently in -mm which might be from rocking@xxxxxxxxxx are
mm-slubc-freelist-is-ensured-to-be-null-when-new_slab-fails.patch
