On Wed, Apr 17, 2024 at 02:47:14PM +0200, Stefan Haberland wrote:
> set_blocksize() does basically also set i_blkbits like it was before.
> The dasd_format ioctl does only work on a disabled device. To achieve this
> all partitions need to be unmounted.
> The tooling also refuses to work on disks actually in use.
>
> So there should be no page cache to evict.
You mean this?
if (base->state != DASD_STATE_BASIC) {
pr_warn("%s: The DASD cannot be formatted while it is enabled\n",
dev_name(&base->cdev->dev));
return -EBUSY;
}
OK, but what would prevent dasd_ioctl_disable() from working while
disk is in use? And I don't see anything that would evict the
page cache in dasd_ioctl_disable() either, actually...
What am I missing here?
