Commit 8c971178 authored by Joe Thornber's avatar Joe Thornber Committed by Alasdair G Kergon

dm thin metadata: introduce THIN_MAX_CONCURRENT_LOCKS

Introduce THIN_MAX_CONCURRENT_LOCKS into dm-thin-metadata to
give a name to an otherwise "magic" number.
Signed-off-by: default avatarJoe Thornber <ejt@redhat.com>
Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent d973ac19
...@@ -80,6 +80,12 @@ ...@@ -80,6 +80,12 @@
#define THIN_METADATA_CACHE_SIZE 64 #define THIN_METADATA_CACHE_SIZE 64
#define SECTOR_TO_BLOCK_SHIFT 3 #define SECTOR_TO_BLOCK_SHIFT 3
/*
* 3 for btree insert +
* 2 for btree lookup used within space map
*/
#define THIN_MAX_CONCURRENT_LOCKS 5
/* This should be plenty */ /* This should be plenty */
#define SPACE_MAP_ROOT_SIZE 128 #define SPACE_MAP_ROOT_SIZE 128
...@@ -668,13 +674,9 @@ struct dm_pool_metadata *dm_pool_metadata_open(struct block_device *bdev, ...@@ -668,13 +674,9 @@ struct dm_pool_metadata *dm_pool_metadata_open(struct block_device *bdev,
return ERR_PTR(-ENOMEM); return ERR_PTR(-ENOMEM);
} }
/*
* Max hex locks:
* 3 for btree insert +
* 2 for btree lookup used within space map
*/
bm = dm_block_manager_create(bdev, THIN_METADATA_BLOCK_SIZE, bm = dm_block_manager_create(bdev, THIN_METADATA_BLOCK_SIZE,
THIN_METADATA_CACHE_SIZE, 5); THIN_METADATA_CACHE_SIZE,
THIN_MAX_CONCURRENT_LOCKS);
if (!bm) { if (!bm) {
DMERR("could not create block manager"); DMERR("could not create block manager");
kfree(pmd); kfree(pmd);
......
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