Commit 18136656 authored Dec 12, 2014 by Ganesh Mahendran Committed by Linus Torvalds Dec 13, 2014

mm/zsmalloc: allocate exactly size of struct zs_pool



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.

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>

parent df8b5bb9

mm/zsmalloc.c

+2 −3

Original line number	Diff line number	Diff line
		@@ -979,12 +979,11 @@ 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;