From: Ganesh Mahendran <opensource.ganesh@gmail.com>
To: minchan@kernel.org, ngupta@vflare.org, ddstreet@ieee.org
Cc: akpm@linux-foundation.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org,
Ganesh Mahendran <opensource.ganesh@gmail.com>
Subject: [RFC PATCH] mm/zsmalloc: allocate exactly size of struct zs_pool
Date: Sat, 29 Nov 2014 19:23:55 +0800 [thread overview]
Message-ID: <1417260235-32053-1-git-send-email-opensource.ganesh@gmail.com> (raw)
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>
---
mm/zsmalloc.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 2021df5..4d0a063 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -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;
--
1.7.9.5
next reply other threads:[~2014-11-29 11:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-29 11:23 Ganesh Mahendran [this message]
2014-12-01 0:29 ` [RFC PATCH] mm/zsmalloc: allocate exactly size of struct zs_pool Minchan Kim
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