linux-kernel - [PATCH 2/2] mm: zbud: Constify the zbud

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Message-id: <1435916413-6475-2-git-send-email-k.kozlowski@samsung.com>
Date:	Fri, 03 Jul 2015 18:40:13 +0900
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Seth Jennings <sjennings@...iantweb.net>,
	Dan Streetman <ddstreet@...e.org>,
	Minchan Kim <minchan@...nel.org>,
	Nitin Gupta <ngupta@...are.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Subject: [PATCH 2/2] mm: zbud: Constify the zbud_ops

The structure zbud_ops is not modified so make the pointer to it as
pointer to const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
---
 include/linux/zbud.h | 2 +-
 mm/zbud.c            | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/linux/zbud.h b/include/linux/zbud.h
index f9d41a6e361f..e183a0a65ac1 100644
--- a/include/linux/zbud.h
+++ b/include/linux/zbud.h
@@ -9,7 +9,7 @@ struct zbud_ops {
 	int (*evict)(struct zbud_pool *pool, unsigned long handle);
 };
 
-struct zbud_pool *zbud_create_pool(gfp_t gfp, struct zbud_ops *ops);
+struct zbud_pool *zbud_create_pool(gfp_t gfp, const struct zbud_ops *ops);
 void zbud_destroy_pool(struct zbud_pool *pool);
 int zbud_alloc(struct zbud_pool *pool, size_t size, gfp_t gfp,
 	unsigned long *handle);
diff --git a/mm/zbud.c b/mm/zbud.c
index 6f8158d64864..fa48bcdff9d5 100644
--- a/mm/zbud.c
+++ b/mm/zbud.c
@@ -96,7 +96,7 @@ struct zbud_pool {
 	struct list_head buddied;
 	struct list_head lru;
 	u64 pages_nr;
-	struct zbud_ops *ops;
+	const struct zbud_ops *ops;
 #ifdef CONFIG_ZPOOL
 	struct zpool *zpool;
 	const struct zpool_ops *zpool_ops;
@@ -133,7 +133,7 @@ static int zbud_zpool_evict(struct zbud_pool *pool, unsigned long handle)
 		return -ENOENT;
 }
 
-static struct zbud_ops zbud_zpool_ops = {
+static const struct zbud_ops zbud_zpool_ops = {
 	.evict =	zbud_zpool_evict
 };
 
@@ -302,7 +302,7 @@ static int num_free_chunks(struct zbud_header *zhdr)
  * Return: pointer to the new zbud pool or NULL if the metadata allocation
  * failed.
  */
-struct zbud_pool *zbud_create_pool(gfp_t gfp, struct zbud_ops *ops)
+struct zbud_pool *zbud_create_pool(gfp_t gfp, const struct zbud_ops *ops)
 {
 	struct zbud_pool *pool;
 	int i;
-- 
1.9.1

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