mm: zbud: constify the zbud_ops

The structure zbud_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>

diff --git a/include/linux/zbud.h b/include/linux/zbud.h
index f9d41a6e361f42f79a20bfd0c5b2f4579d61dcac..e183a0a65ac1cb176f60a4131cf5bf0419c3608b 100644 (file)
--- 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 6f8158d6486484a26436853604d2e43489ef98de..fa48bcdff9d5b921d6a52b6d203fa4e89d7c7cb6 100644 (file)
--- 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;