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| author | Gu Zheng <guz.fnst@cn.fujitsu.com> | 2014-08-06 16:04:51 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-06 18:01:15 -0700 |
| commit | 4307c14f3c77bc0cb0facfc9c67c7872505aaedf (patch) | |
| tree | f45db34edc9d30000590d05f530a7a5ea785ae84 /mm | |
| parent | 0aa9a13d80bae1bb24956f6e3e2662b7242e0b41 (diff) | |
| download | linux-4307c14f3c77bc0cb0facfc9c67c7872505aaedf.tar.bz2 | |
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@cn.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/slub.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/slub.c b/mm/slub.c index d9aadbfe7c29..9b861b90cde1 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -4466,7 +4466,7 @@ 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); |