Lines Matching refs:used_bg
3428 struct btrfs_block_group *used_bg = NULL; in btrfs_lock_cluster() local
3432 used_bg = cluster->block_group; in btrfs_lock_cluster()
3433 if (!used_bg) in btrfs_lock_cluster()
3436 if (used_bg == block_group) in btrfs_lock_cluster()
3437 return used_bg; in btrfs_lock_cluster()
3439 btrfs_get_block_group(used_bg); in btrfs_lock_cluster()
3442 return used_bg; in btrfs_lock_cluster()
3444 if (down_read_trylock(&used_bg->data_rwsem)) in btrfs_lock_cluster()
3445 return used_bg; in btrfs_lock_cluster()
3450 down_read_nested(&used_bg->data_rwsem, SINGLE_DEPTH_NESTING); in btrfs_lock_cluster()
3453 if (used_bg == cluster->block_group) in btrfs_lock_cluster()
3454 return used_bg; in btrfs_lock_cluster()
3456 up_read(&used_bg->data_rwsem); in btrfs_lock_cluster()
3457 btrfs_put_block_group(used_bg); in btrfs_lock_cluster()