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dm thin metadata: move bm creation code into create_persistent_data_objects

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Move block manager creation and the check for unformatted metadata into
__create_persistent_data_objects().

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Joe Thornber 2012-07-27 15:08:10 +01:00 committed by Alasdair G Kergon
parent 77f49a4027
commit 332627db00
1 changed files with 36 additions and 28 deletions
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64
drivers/md/dm-thin-metadata.c
View file

@ -357,7 +357,7 @@ static int superblock_lock(struct dm_pool_metadata *pmd,
&sb_validator, sblock);
}
static int superblock_all_zeroes(struct dm_block_manager *bm, int *result)
static int __superblock_all_zeroes(struct dm_block_manager *bm, int *result)
{
int r;
unsigned i;
@ -422,9 +422,9 @@ static void __setup_btree_details(struct dm_pool_metadata *pmd)
pmd->details_info.value_type.equal = NULL;
}
static int __create_persistent_data_objects(struct dm_pool_metadata *pmd,
struct dm_block_manager *bm,
dm_block_t nr_blocks, int create)
static int __open_or_format_metadata(struct dm_pool_metadata *pmd,
struct dm_block_manager *bm,
dm_block_t nr_blocks, int create)
{
int r;
struct dm_space_map *sm, *data_sm;
@ -509,6 +509,32 @@ bad:
return r;
}
static int __create_persistent_data_objects(struct dm_pool_metadata *pmd,
dm_block_t nr_blocks, int *create)
{
int r;
pmd->bm = dm_block_manager_create(pmd->bdev, THIN_METADATA_BLOCK_SIZE,
THIN_METADATA_CACHE_SIZE,
THIN_MAX_CONCURRENT_LOCKS);
if (IS_ERR(pmd->bm)) {
DMERR("could not create block manager");
return PTR_ERR(pmd->bm);
}
r = __superblock_all_zeroes(pmd->bm, create);
if (r) {
dm_block_manager_destroy(pmd->bm);
return r;
}
r = __open_or_format_metadata(pmd, pmd->bm, nr_blocks, *create);
if (r)
dm_block_manager_destroy(pmd->bm);
return r;
}
static int __begin_transaction(struct dm_pool_metadata *pmd)
{
int r;
@ -666,7 +692,6 @@ struct dm_pool_metadata *dm_pool_metadata_open(struct block_device *bdev,
struct thin_disk_superblock *disk_super;
struct dm_pool_metadata *pmd;
sector_t bdev_size = i_size_read(bdev->bd_inode) >> SECTOR_SHIFT;
struct dm_block_manager *bm;
int create;
struct dm_block *sblock;
@ -676,31 +701,14 @@ struct dm_pool_metadata *dm_pool_metadata_open(struct block_device *bdev,
return ERR_PTR(-ENOMEM);
}
bm = dm_block_manager_create(bdev, THIN_METADATA_BLOCK_SIZE,
THIN_METADATA_CACHE_SIZE,
THIN_MAX_CONCURRENT_LOCKS);
if (IS_ERR(bm)) {
r = PTR_ERR(bm);
DMERR("could not create block manager");
kfree(pmd);
return ERR_PTR(r);
}
r = superblock_all_zeroes(bm, &create);
if (r) {
dm_block_manager_destroy(bm);
kfree(pmd);
return ERR_PTR(r);
}
r = __create_persistent_data_objects(pmd, bm, 0, create);
if (r) {
dm_block_manager_destroy(bm);
kfree(pmd);
return ERR_PTR(r);
}
pmd->bdev = bdev;
r = __create_persistent_data_objects(pmd, 0, &create);
if (r) {
kfree(pmd);
return ERR_PTR(r);
}
if (!create) {
r = __begin_transaction(pmd);
if (r < 0)