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mm/slab: avoid returning values by reference 

Returing values by reference is bad practice.  Instead, just use
function return value.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Suggested-by: Christoph Lameter <cl@linux.com>
Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joonsoo Kim 2016-03-15 14:54:53 -07:00 committed by Linus Torvalds
parent b03a017beb
commit 70f75067b1
1 changed files with 8 additions and 5 deletions
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13
mm/slab.c
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@ -460,9 +460,10 @@ static inline struct array_cache *cpu_cache_get(struct kmem_cache *cachep)
/*
* Calculate the number of objects and left-over bytes for a given buffer size.
*/
static void cache_estimate(unsigned long gfporder, size_t buffer_size,
unsigned long flags, size_t *left_over, unsigned int *num)
static unsigned int cache_estimate(unsigned long gfporder, size_t buffer_size,
unsigned long flags, size_t *left_over)
{
unsigned int num;
size_t slab_size = PAGE_SIZE << gfporder;
/*
@ -483,13 +484,15 @@ static void cache_estimate(unsigned long gfporder, size_t buffer_size,
* correct alignment when allocated.
*/
if (flags & (CFLGS_OBJFREELIST_SLAB | CFLGS_OFF_SLAB)) {
*num = slab_size / buffer_size;
num = slab_size / buffer_size;
*left_over = slab_size % buffer_size;
} else {
*num = slab_size / (buffer_size + sizeof(freelist_idx_t));
num = slab_size / (buffer_size + sizeof(freelist_idx_t));
*left_over = slab_size %
(buffer_size + sizeof(freelist_idx_t));
}
return num;
}
#if DEBUG
@ -1893,7 +1896,7 @@ static size_t calculate_slab_order(struct kmem_cache *cachep,
unsigned int num;
size_t remainder;
cache_estimate(gfporder, size, flags, &remainder, &num);
num = cache_estimate(gfporder, size, flags, &remainder);
if (!num)
continue;