slub: make ->red_left_pad unsigned int

Padding length can't be negative.

Link: http://lkml.kernel.org/r/20180305200730.15812-11-adobriyan@gmail.com
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
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>

diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index 9bb7613..9f59fc1 100644 (file)
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -101,7 +101,7 @@ struct kmem_cache {
        int inuse;              /* Offset to metadata */
        int align;              /* Alignment */
        int reserved;           /* Reserved bytes at the end of slabs */
-       int red_left_pad;       /* Left redzone padding size */
+       unsigned int red_left_pad;      /* Left redzone padding size */
        const char *name;       /* Name (only for display!) */
        struct list_head list;  /* List of slab caches */
 #ifdef CONFIG_SYSFS