mm: zsmalloc: constify struct zs_pool name

Constify `struct zs_pool' ->name.

[[email protected]: constify zpool_create_pool()'s `type' arg also]
Signed-off-by: Sergey Senozhatsky <[email protected]>
Acked-by: Dan Streetman <[email protected]>
Cc: Minchan Kim <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
diff --git a/include/linux/zpool.h b/include/linux/zpool.h
index 1f405be..2e97b77 100644
--- a/include/linux/zpool.h
+++ b/include/linux/zpool.h
@@ -38,7 +38,7 @@
 
 bool zpool_has_pool(char *type);
 
-struct zpool *zpool_create_pool(char *type, char *name,
+struct zpool *zpool_create_pool(const char *type, const char *name,
 			gfp_t gfp, const struct zpool_ops *ops);
 
 const char *zpool_get_type(struct zpool *pool);
@@ -83,7 +83,9 @@
 	atomic_t refcount;
 	struct list_head list;
 
-	void *(*create)(char *name, gfp_t gfp, const struct zpool_ops *ops,
+	void *(*create)(const char *name,
+			gfp_t gfp,
+			const struct zpool_ops *ops,
 			struct zpool *zpool);
 	void (*destroy)(void *pool);
 
diff --git a/include/linux/zsmalloc.h b/include/linux/zsmalloc.h
index 6398dfa..34eb160 100644
--- a/include/linux/zsmalloc.h
+++ b/include/linux/zsmalloc.h
@@ -41,7 +41,7 @@
 
 struct zs_pool;
 
-struct zs_pool *zs_create_pool(char *name, gfp_t flags);
+struct zs_pool *zs_create_pool(const char *name, gfp_t flags);
 void zs_destroy_pool(struct zs_pool *pool);
 
 unsigned long zs_malloc(struct zs_pool *pool, size_t size);
diff --git a/mm/zbud.c b/mm/zbud.c
index fa48bcdf..d8a181f 100644
--- a/mm/zbud.c
+++ b/mm/zbud.c
@@ -137,7 +137,7 @@
 	.evict =	zbud_zpool_evict
 };
 
-static void *zbud_zpool_create(char *name, gfp_t gfp,
+static void *zbud_zpool_create(const char *name, gfp_t gfp,
 			       const struct zpool_ops *zpool_ops,
 			       struct zpool *zpool)
 {
diff --git a/mm/zpool.c b/mm/zpool.c
index 13f524d..fd3ff71 100644
--- a/mm/zpool.c
+++ b/mm/zpool.c
@@ -72,7 +72,7 @@
 EXPORT_SYMBOL(zpool_unregister_driver);
 
 /* this assumes @type is null-terminated. */
-static struct zpool_driver *zpool_get_driver(char *type)
+static struct zpool_driver *zpool_get_driver(const char *type)
 {
 	struct zpool_driver *driver;
 
@@ -150,7 +150,7 @@
  *
  * 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, const char *name, gfp_t gfp,
 		const struct zpool_ops *ops)
 {
 	struct zpool_driver *driver;
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index f135b1b..8b8e0da 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -237,7 +237,7 @@
 };
 
 struct zs_pool {
-	char *name;
+	const char *name;
 
 	struct size_class **size_class;
 	struct kmem_cache *handle_cachep;
@@ -311,7 +311,7 @@
 
 #ifdef CONFIG_ZPOOL
 
-static void *zs_zpool_create(char *name, gfp_t gfp,
+static void *zs_zpool_create(const char *name, gfp_t gfp,
 			     const struct zpool_ops *zpool_ops,
 			     struct zpool *zpool)
 {
@@ -548,7 +548,7 @@
 	.release        = single_release,
 };
 
-static int zs_pool_stat_create(char *name, struct zs_pool *pool)
+static int zs_pool_stat_create(const char *name, struct zs_pool *pool)
 {
 	struct dentry *entry;
 
@@ -588,7 +588,7 @@
 {
 }
 
-static inline int zs_pool_stat_create(char *name, struct zs_pool *pool)
+static inline int zs_pool_stat_create(const char *name, struct zs_pool *pool)
 {
 	return 0;
 }
@@ -1866,7 +1866,7 @@
  * On success, a pointer to the newly created pool is returned,
  * otherwise NULL.
  */
-struct zs_pool *zs_create_pool(char *name, gfp_t flags)
+struct zs_pool *zs_create_pool(const char *name, gfp_t flags)
 {
 	int i;
 	struct zs_pool *pool;