The patch titled
Subject: slab: fix the alias count (via sysfs) of slab cache
has been added to the -mm tree. Its filename is
slab-fix-the-alias-countvia-sysfs-of-slab-cache.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/slab-fix-the-alias-countvia-sysfs-of-slab-cache.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/slab-fix-the-alias-countvia-sysfs-of-slab-cache.patch
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------------------------------------------------------
From: Gu Zheng <guz.fnst@xxxxxxxxxxxxxx>
Subject: slab: fix the alias count (via sysfs) of slab cache
We mark some slab caches (e.g. kmem_cache_node) as unmergeable by
setting refcount to -1, and their alias should be 0, not refcount-1, so
correct it here.
Signed-off-by: Gu Zheng <guz.fnst@xxxxxxxxxxxxxx>
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>
---
mm/slub.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/slub.c~slab-fix-the-alias-countvia-sysfs-of-slab-cache mm/slub.c
--- a/mm/slub.c~slab-fix-the-alias-countvia-sysfs-of-slab-cache
+++ a/mm/slub.c
@@ -4468,7 +4468,7 @@ SLAB_ATTR_RO(ctor);
static ssize_t aliases_show(struct kmem_cache *s, char *buf)
{
- return sprintf(buf, "%d\n", s->refcount - 1);
+ return sprintf(buf, "%d\n", s->refcount < 0 ? 0 : s->refcount - 1);
}
SLAB_ATTR_RO(aliases);
_
Patches currently in -mm which might be from guz.fnst@xxxxxxxxxxxxxx are
x86mem-hotplug-pass-sync_global_pgds-a-correct-argument-in-remove_pagetable.patch
x86mem-hotplug-modify-pgd-entry-when-removing-memory.patch
bio-integrity-remove-the-needless-fail-handle-of-bip_slab-creating.patch
slab-fix-the-alias-countvia-sysfs-of-slab-cache.patch
mem-hotplug-avoid-illegal-state-prefixed-with-legal-state-when-changing-state-of-memory_block.patch
mem-hotplug-introduce-mmop_offline-to-replace-the-hard-coding-1.patch
linux-next.patch
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