btrfs_dev_replace_by_ioctl 13 fs/btrfs/dev-replace.h int btrfs_dev_replace_by_ioctl(struct btrfs_fs_info *fs_info, btrfs_dev_replace_by_ioctl 4356 fs/btrfs/ioctl.c ret = btrfs_dev_replace_by_ioctl(fs_info, p);