We mark some slabs(e.g. kmem_cache_node) as unmergeable via 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>
---
mm/slub.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c
index 7300480..ac1a20a 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -4509,7 +4509,7 @@ 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);
--
1.7.7
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