int dm_sm_metadata_create(struct dm_space_map *sm,
struct dm_transaction_manager *tm,
dm_block_t nr_blocks,
dm_block_t superblock)
{
int r;
dm_block_t i;
enum allocation_event ev;
struct sm_metadata *smm = container_of(sm, struct sm_metadata, sm);
smm->begin = superblock + 1;
smm->recursion_count = 0;
smm->allocated_this_transaction = 0;
brb_init(&smm->uncommitted);
threshold_init(&smm->threshold);
memcpy(&smm->sm, &bootstrap_ops, sizeof(smm->sm));
r = sm_ll_new_metadata(&smm->ll, tm);
if (r)
return r;
if (nr_blocks > DM_SM_METADATA_MAX_BLOCKS)
nr_blocks = DM_SM_METADATA_MAX_BLOCKS;
r = sm_ll_extend(&smm->ll, nr_blocks);
if (r)
return r;
memcpy(&smm->sm, &ops, sizeof(smm->sm));
/*
* Now we need to update the newly created data structures with the
* allocated blocks that they were built from.
*/
for (i = superblock; !r && i < smm->begin; i++)
r = sm_ll_inc(&smm->ll, i, &ev);
if (r)
return r;
r = apply_bops(smm);
if (r) {
DMERR("%s: apply_bops failed", __func__);
return r;
}
return sm_metadata_commit(sm);
}
int dm_sm_metadata_open(struct dm_space_map *sm,
struct dm_transaction_manager *tm,
void *root_le, size_t len)
{
int r;
struct sm_metadata *smm = container_of(sm, struct sm_metadata, sm);
r = sm_ll_open_metadata(&smm->ll, tm, root_le, len);
if (r)
return r;
smm->begin = 0;
smm->recursion_count = 0;
smm->allocated_this_transaction = 0;
brb_init(&smm->uncommitted);
threshold_init(&smm->threshold);
memcpy(&smm->old_ll, &smm->ll, sizeof(smm->old_ll));
return 0;
}