dm block manager: remove an unused argument from dm_block_manager_create()

The 'cache_size' argument of dm_block_manager_create() has never been
used.  Remove it along with the definitions of the constants passed as
the 'cache_size' argument.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

drivers/md/dm-cache-metadata.c

@@ -27,8 +27,6 @@
 #define MIN_CACHE_VERSION 1
 #define MAX_CACHE_VERSION 2
 
-#define CACHE_METADATA_CACHE_SIZE 64
-
 /*
  *  3 for btree insert +
  *  2 for btree lookup used within space map
@@ -535,7 +533,6 @@ static int __create_persistent_data_objects(struct dm_cache_metadata *cmd,
 {
 	int r;
 	cmd->bm = dm_block_manager_create(cmd->bdev, DM_CACHE_METADATA_BLOCK_SIZE << SECTOR_SHIFT,
-					  CACHE_METADATA_CACHE_SIZE,
 					  CACHE_MAX_CONCURRENT_LOCKS);
 	if (IS_ERR(cmd->bm)) {
 		DMERR("could not create block manager");

drivers/md/dm-era-target.c

@@ -254,7 +254,6 @@ static struct dm_block_validator sb_validator = {
  * Low level metadata handling
  *--------------------------------------------------------------*/
 #define DM_ERA_METADATA_BLOCK_SIZE 4096
-#define DM_ERA_METADATA_CACHE_SIZE 64
 #define ERA_MAX_CONCURRENT_LOCKS 5
 
 struct era_metadata {
@@ -615,7 +614,6 @@ static int create_persistent_data_objects(struct era_metadata *md,
 	int r;
 
 	md->bm = dm_block_manager_create(md->bdev, DM_ERA_METADATA_BLOCK_SIZE,
-					 DM_ERA_METADATA_CACHE_SIZE,
 					 ERA_MAX_CONCURRENT_LOCKS);
 	if (IS_ERR(md->bm)) {
 		DMERR("could not create block manager");

drivers/md/dm-thin-metadata.c

@@ -77,7 +77,6 @@
 #define THIN_SUPERBLOCK_MAGIC 27022010
 #define THIN_SUPERBLOCK_LOCATION 0
 #define THIN_VERSION 2
-#define THIN_METADATA_CACHE_SIZE 64
 #define SECTOR_TO_BLOCK_SHIFT 3
 
 /*
@@ -686,7 +685,6 @@ static int __create_persistent_data_objects(struct dm_pool_metadata *pmd, bool f
 	int r;
 
 	pmd->bm = dm_block_manager_create(pmd->bdev, THIN_METADATA_BLOCK_SIZE << SECTOR_SHIFT,
-					  THIN_METADATA_CACHE_SIZE,
 					  THIN_MAX_CONCURRENT_LOCKS);
 	if (IS_ERR(pmd->bm)) {
 		DMERR("could not create block manager");

drivers/md/persistent-data/dm-block-manager.c

@@ -378,7 +378,6 @@ struct dm_block_manager {
 
 struct dm_block_manager *dm_block_manager_create(struct block_device *bdev,
 						 unsigned block_size,
-						 unsigned cache_size,
 						 unsigned max_held_per_thread)
 {
 	int r;

drivers/md/persistent-data/dm-block-manager.h

@@ -33,7 +33,7 @@ void *dm_block_data(struct dm_block *b);
 struct dm_block_manager;
 struct dm_block_manager *dm_block_manager_create(
 	struct block_device *bdev, unsigned block_size,
-	unsigned cache_size, unsigned max_held_per_thread);
+	unsigned max_held_per_thread);
 void dm_block_manager_destroy(struct dm_block_manager *bm);
 
 unsigned dm_bm_block_size(struct dm_block_manager *bm);