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slab: use 32-bit arithmetic in freelist_randomize()

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SLAB doesn't support 4GB+ of objects per slab, therefore randomization
doesn't need size_t.

Link: http://lkml.kernel.org/r/20180305200730.15812-25-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>
This commit is contained in:
Alexey Dobriyan 2018-04-05 16:21:46 -07:00 • committed by Linus Torvalds
parent 870b1fbb03
commit 302d55d51d
1 changed files with 2 additions and 2 deletions
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4
mm/slab_common.c
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@ -1186,10 +1186,10 @@ EXPORT_SYMBOL(kmalloc_order_trace);
#ifdef CONFIG_SLAB_FREELIST_RANDOM
/* Randomize a generic freelist */
static void freelist_randomize(struct rnd_state *state, unsigned int *list,
size_t count)
unsigned int count)
{
size_t i;
unsigned int rand;
unsigned int i;
for (i = 0; i < count; i++)
list[i] = i;