On Wed, Mar 16, 2022 at 06:05:29PM +0000, Eric Biggers wrote: > __blkdev_issue_discard() can break up the region into multiple bios, but I don't > see where it actually skips parts of the region. Can you explain more > specifically where the problem is? You're right. We used to skip misaligned parts, but that was actually fixed two years ago.