linux-kernel - [PATCH 1/2] mm:zpool: constify struct zpool type

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Date:	Thu, 10 Sep 2015 20:48:37 +0900
From:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Seth Jennings <sjennings@...iantweb.net>,
	Dan Streetman <ddstreet@...e.org>,
	Minchan Kim <minchan@...nel.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
	Sergey SENOZHATSKY <sergey.senozhatsky@...il.com>
Subject: [PATCH 1/2] mm:zpool: constify struct zpool type

From: Sergey SENOZHATSKY <sergey.senozhatsky@...il.com>

Constify `struct zpool' ->type.

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
---
 include/linux/zpool.h |  8 ++++----
 mm/zpool.c            | 10 +++++-----
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/include/linux/zpool.h b/include/linux/zpool.h
index 42f8ec9..2c136f4 100644
--- a/include/linux/zpool.h
+++ b/include/linux/zpool.h
@@ -36,12 +36,12 @@ enum zpool_mapmode {
 	ZPOOL_MM_DEFAULT = ZPOOL_MM_RW
 };
 
-bool zpool_has_pool(char *type);
+bool zpool_has_pool(const char *type);
 
-struct zpool *zpool_create_pool(char *type, char *name,
+struct zpool *zpool_create_pool(const char *type, char *name,
 			gfp_t gfp, const struct zpool_ops *ops);
 
-char *zpool_get_type(struct zpool *pool);
+const char *zpool_get_type(struct zpool *pool);
 
 void zpool_destroy_pool(struct zpool *pool);
 
@@ -78,7 +78,7 @@ u64 zpool_get_total_size(struct zpool *pool);
  * with zpool.
  */
 struct zpool_driver {
-	char *type;
+	const char *type;
 	struct module *owner;
 	atomic_t refcount;
 	struct list_head list;
diff --git a/mm/zpool.c b/mm/zpool.c
index 8f670d3..2889d0d 100644
--- a/mm/zpool.c
+++ b/mm/zpool.c
@@ -18,7 +18,7 @@
 #include <linux/zpool.h>
 
 struct zpool {
-	char *type;
+	const char *type;
 
 	struct zpool_driver *driver;
 	void *pool;
@@ -73,7 +73,7 @@ int zpool_unregister_driver(struct zpool_driver *driver)
 }
 EXPORT_SYMBOL(zpool_unregister_driver);
 
-static struct zpool_driver *zpool_get_driver(char *type)
+static struct zpool_driver *zpool_get_driver(const char *type)
 {
 	struct zpool_driver *driver;
 
@@ -115,7 +115,7 @@ static void zpool_put_driver(struct zpool_driver *driver)
  *
  * Returns: true if @type pool is available, false if not
  */
-bool zpool_has_pool(char *type)
+bool zpool_has_pool(const char *type)
 {
 	struct zpool_driver *driver = zpool_get_driver(type);
 
@@ -147,7 +147,7 @@ EXPORT_SYMBOL(zpool_has_pool);
  *
  * Returns: New zpool on success, NULL on failure.
  */
-struct zpool *zpool_create_pool(char *type, char *name, gfp_t gfp,
+struct zpool *zpool_create_pool(const char *type, char *name, gfp_t gfp,
 		const struct zpool_ops *ops)
 {
 	struct zpool_driver *driver;
@@ -228,7 +228,7 @@ void zpool_destroy_pool(struct zpool *zpool)
  *
  * Returns: The type of zpool.
  */
-char *zpool_get_type(struct zpool *zpool)
+const char *zpool_get_type(struct zpool *zpool)
 {
 	return zpool->type;
 }
-- 
2.5.1

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