mm: zsmalloc: constify struct zs_pool name

Constify `struct zs_pool' ->name.

[akpm@inux-foundation.org: constify zpool_create_pool()'s `type' arg also]
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Dan Streetman <ddstreet@ieee.org>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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;