Lines Matching refs:used_bg
7172 struct btrfs_block_group_cache *used_bg = NULL; in btrfs_lock_cluster() local
7176 used_bg = cluster->block_group; in btrfs_lock_cluster()
7177 if (!used_bg) in btrfs_lock_cluster()
7180 if (used_bg == block_group) in btrfs_lock_cluster()
7181 return used_bg; in btrfs_lock_cluster()
7183 btrfs_get_block_group(used_bg); in btrfs_lock_cluster()
7186 return used_bg; in btrfs_lock_cluster()
7188 if (down_read_trylock(&used_bg->data_rwsem)) in btrfs_lock_cluster()
7189 return used_bg; in btrfs_lock_cluster()
7194 down_read_nested(&used_bg->data_rwsem, SINGLE_DEPTH_NESTING); in btrfs_lock_cluster()
7197 if (used_bg == cluster->block_group) in btrfs_lock_cluster()
7198 return used_bg; in btrfs_lock_cluster()
7200 up_read(&used_bg->data_rwsem); in btrfs_lock_cluster()
7201 btrfs_put_block_group(used_bg); in btrfs_lock_cluster()