dm_tm_read_lock
r = dm_tm_read_lock(md->tm, md->metadata_snap, &sb_validator, &clone);
r = dm_tm_read_lock(pmd->tm, held_root, &sb_validator, ©);
r = dm_tm_read_lock(info->btree_info.tm, b, &array_validator, block);
r = dm_tm_read_lock(info->tm, b, &btree_node_validator, &child);
return dm_tm_read_lock(info->tm, b, &btree_node_validator, result);
r = dm_tm_read_lock(s->tm, b, &btree_node_validator, &f->b);
r = dm_tm_read_lock(ll->tm, le64_to_cpu(ie_disk.blocknr),
r = dm_tm_read_lock(ll->tm, le64_to_cpu(ie_disk.blocknr),
r = dm_tm_read_lock(ll->tm, ll->bitmap_root,
EXPORT_SYMBOL_GPL(dm_tm_read_lock);
int dm_tm_read_lock(struct dm_transaction_manager *tm, dm_block_t b,