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UPSTREAM: mm/zsmalloc: allocate exactly size of struct zs_pool

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(cherry-pick from commit 181366561ac1e1a7bc3b91dbe45e7614a2f758b9)

In zs_create_pool(), we allocate memory more then sizeof(struct zs_pool)
  ovhd_size = roundup(sizeof(*pool), PAGE_SIZE);

This patch allocate memory of exactly needed size.

Bug: 25951511

Change-Id: Iae1216f7ab304164ea7d687e0037574d6738c94e
Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ganesh Mahendran 2014-12-12 16:57:10 -08:00 committed by Srinivasarao P
parent 0349162dc3
commit caeae3dbac
1 changed files with 2 additions and 3 deletions
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5
mm/zsmalloc.c
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@ -980,12 +980,11 @@ static bool can_merge(struct size_class *prev, int size, int pages_per_zspage)
*/
struct zs_pool *zs_create_pool(gfp_t flags)
{
int i, ovhd_size;
int i;
struct zs_pool *pool;
struct size_class *prev_class = NULL;
ovhd_size = roundup(sizeof(*pool), PAGE_SIZE);
pool = kzalloc(ovhd_size, GFP_KERNEL);
pool = kzalloc(sizeof(*pool), GFP_KERNEL);
if (!pool)
return NULL;