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authorAlexey Dobriyan <adobriyan@gmail.com>2018-04-05 16:20:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-05 21:36:23 -0700
commitd66e52d1e82b1adfab541f1aad09526ebf67842d (patch)
tree32b30bbb578637535718c7314813d19919d08aac
parent2ca6d39b31022bb9e1dda77109e292517f701261 (diff)
downloadlinux-d66e52d1e82b1adfab541f1aad09526ebf67842d.tar.gz
slub: make ->reserved unsigned int
->reserved is either 0 or sizeof(struct rcu_head), can't be negative.

Link: http://lkml.kernel.org/r/20180305200730.15812-12-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>
-rw-r--r--include/linux/slub_def.h2
-rw-r--r--mm/slub.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index 9f59fc16444b..2b4417aa15d8 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -100,7 +100,7 @@ struct kmem_cache {
 	void (*ctor)(void *);
 	int inuse;		/* Offset to metadata */
 	int align;		/* Alignment */
-	int reserved;		/* Reserved bytes at the end of slabs */
+	unsigned int reserved;		/* Reserved bytes at the end of slabs */
 	unsigned int red_left_pad;	/* Left redzone padding size */
 	const char *name;	/* Name (only for display!) */
 	struct list_head list;	/* List of slab caches */
diff --git a/mm/slub.c b/mm/slub.c
index 97dd2db30acb..e38221c13b07 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -5094,7 +5094,7 @@ SLAB_ATTR_RO(destroy_by_rcu);
 
 static ssize_t reserved_show(struct kmem_cache *s, char *buf)
 {
-	return sprintf(buf, "%d\n", s->reserved);
+	return sprintf(buf, "%u\n", s->reserved);
 }
 SLAB_ATTR_RO(reserved);