btrfs_shrink_device 1727 fs/btrfs/ioctl.c 		ret = btrfs_shrink_device(device, new_size);
btrfs_shrink_device 2190 fs/btrfs/volumes.c 	ret = btrfs_shrink_device(device, 0);
btrfs_shrink_device  463 fs/btrfs/volumes.h int btrfs_shrink_device(struct btrfs_device *device, u64 new_size);