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authorJoe Thornber <ejt@redhat.com>2012-07-27 15:08:10 +0100
committerAlasdair G Kergon <agk@redhat.com>2012-07-27 15:08:10 +0100
commit332627db00a982b395f5b141d50298866bfec98c (patch)
tree88a5925a0850719b52f67d63ae6e5098bbb894ce /drivers/md/dm-thin-metadata.c
parent77f49a402769f7db022935ef317f1c12c1c06319 (diff)
downloadlinaro-lsk-332627db00a982b395f5b141d50298866bfec98c.tar.gz
dm thin metadata: move bm creation code into create_persistent_data_objects
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>
Diffstat (limited to 'drivers/md/dm-thin-metadata.c')
-rw-r--r--drivers/md/dm-thin-metadata.c56
1 files changed, 32 insertions, 24 deletions
diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index 0ef10f70565..dab2109ec40 100644
--- a/drivers/md/dm-thin-metadata.c
+++ b/drivers/md/dm-thin-metadata.c
@@ -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;
@@ -676,30 +701,13 @@ 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);
- }
+ pmd->bdev = bdev;
- r = __create_persistent_data_objects(pmd, bm, 0, create);
+ r = __create_persistent_data_objects(pmd, 0, &create);
if (r) {
- dm_block_manager_destroy(bm);
kfree(pmd);
return ERR_PTR(r);
}
- pmd->bdev = bdev;
if (!create) {
r = __begin_transaction(pmd);