[PATCH 1/2] mm: zpool: Constify the zpool_ops

From: Krzysztof Kozlowski
Date: Fri Jul 03 2015 - 05:40:33 EST


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

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
---
include/linux/zpool.h | 4 ++--
mm/zbud.c | 4 ++--
mm/zpool.c | 4 ++--
mm/zsmalloc.c | 3 ++-
mm/zswap.c | 2 +-
5 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/include/linux/zpool.h b/include/linux/zpool.h
index d30eff3d84d5..c924a28d9805 100644
--- a/include/linux/zpool.h
+++ b/include/linux/zpool.h
@@ -37,7 +37,7 @@ enum zpool_mapmode {
};

struct zpool *zpool_create_pool(char *type, char *name,
- gfp_t gfp, struct zpool_ops *ops);
+ gfp_t gfp, const struct zpool_ops *ops);

char *zpool_get_type(struct zpool *pool);

@@ -81,7 +81,7 @@ struct zpool_driver {
atomic_t refcount;
struct list_head list;

- void *(*create)(char *name, gfp_t gfp, struct zpool_ops *ops,
+ void *(*create)(char *name, gfp_t gfp, const struct zpool_ops *ops,
struct zpool *zpool);
void (*destroy)(void *pool);

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 0a7f81aa2249..6e139d381d80 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -309,7 +309,8 @@ 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 2d5727baed59..017a3f50725d 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -816,7 +816,7 @@ 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
};

--
1.9.1

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