mm: zpool: constify the zpool_ops

The structure zpool_ops is not modified so make the pointer to it a
pointer to const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

4 files changed, 7 insertions, 6 deletions

diff --git a/mm/zbud.c b/mm/zbud.c
index f3bf6f7627d8..6f8158d64864 100644
--- a/mm/zbud.c
+++ b/mm/zbud.c
@@ -99,7 +99,7 @@ struct zbud_pool {
         struct zbud_ops *ops;
 #ifdef CONFIG_ZPOOL
         struct zpool *zpool;
-        struct zpool_ops *zpool_ops;
+        const struct zpool_ops *zpool_ops;
 #endif
 };
 
@@ -138,7 +138,7 @@ static struct zbud_ops zbud_zpool_ops = {
 };
 
 static void *zbud_zpool_create(char *name, gfp_t gfp,
-                               struct zpool_ops *zpool_ops,
+                               const struct zpool_ops *zpool_ops,
                                struct zpool *zpool)
 {
         struct zbud_pool *pool;
diff --git a/mm/zpool.c b/mm/zpool.c
index 722a4f60e90b..951db32b833f 100644
--- a/mm/zpool.c
+++ b/mm/zpool.c
@@ -22,7 +22,7 @@ struct zpool {
 
         struct zpool_driver *driver;
         void *pool;
-        struct zpool_ops *ops;
+        const struct zpool_ops *ops;
 
         struct list_head list;
 };
@@ -115,7 +115,7 @@ static void zpool_put_driver(struct zpool_driver *driver)
  * Returns: New zpool on success, NULL on failure.
  */
 struct zpool *zpool_create_pool(char *type, char *name, gfp_t gfp,
-                struct zpool_ops *ops)
+                const struct zpool_ops *ops)
 {
         struct zpool_driver *driver;
         struct zpool *zpool;
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 089120429c18..f135b1b6fcdc 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -311,7 +311,8 @@ static void record_obj(unsigned long handle, unsigned long obj)
 
 #ifdef CONFIG_ZPOOL
 
-static void *zs_zpool_create(char *name, gfp_t gfp, struct zpool_ops *zpool_ops,
+static void *zs_zpool_create(char *name, gfp_t gfp,
+                             const struct zpool_ops *zpool_ops,
                              struct zpool *zpool)
 {
         return zs_create_pool(name, gfp);
diff --git a/mm/zswap.c b/mm/zswap.c
index 09208c7c86f3..48a1d081e2a5 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -755,7 +755,7 @@ static void zswap_frontswap_invalidate_area(unsigned type)
         zswap_trees[type] = NULL;
 }
 
-static struct zpool_ops zswap_zpool_ops = {
+static const struct zpool_ops zswap_zpool_ops = {
         .evict = zswap_writeback_entry
 };