From 0be70327ec8cf6dd6847cbd8b75ca51be864a6ea Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Thu, 5 Apr 2018 16:20:26 -0700 Subject: [PATCH] slab: make kmalloc_size() return "unsigned int" kmalloc_size() derives size of kmalloc cache from internal index, which can't be negative. Propagate unsignedness a bit. Link: http://lkml.kernel.org/r/20180305200730.15812-3-adobriyan@gmail.com Signed-off-by: Alexey Dobriyan Acked-by: Christoph Lameter Cc: Pekka Enberg Cc: David Rientjes Cc: Joonsoo Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/slab.h | 4 ++-- mm/slab_common.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/include/linux/slab.h b/include/linux/slab.h index 296f33a512eb..ad157fbf3886 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -522,11 +522,11 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags) * return size or 0 if a kmalloc cache for that * size does not exist */ -static __always_inline int kmalloc_size(int n) +static __always_inline unsigned int kmalloc_size(unsigned int n) { #ifndef CONFIG_SLOB if (n > 2) - return 1 << n; + return 1U << n; if (n == 1 && KMALLOC_MIN_SIZE <= 32) return 96; diff --git a/mm/slab_common.c b/mm/slab_common.c index 7626a64b8f14..d3f4209c297d 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -1138,9 +1138,9 @@ void __init create_kmalloc_caches(slab_flags_t flags) struct kmem_cache *s = kmalloc_caches[i]; if (s) { - int size = kmalloc_size(i); + unsigned int size = kmalloc_size(i); char *n = kasprintf(GFP_NOWAIT, - "dma-kmalloc-%d", size); + "dma-kmalloc-%u", size); BUG_ON(!n); kmalloc_dma_caches[i] = create_kmalloc_cache(n,