[dm-devel] [PATCH 2/3] block: require write_same and discard requests align to logical block size

[Christoph Hellwig]

On Tue, Apr 12, 2016 at 09:01:35PM -0700, Darrick J. Wong wrote:
> Make sure that the offset and length arguments that we're using to
> construct WRITE SAME and DISCARD requests are actually aligned to the
> logical block size.  Failure to do this causes other errors in other
> parts of the block layer or the SCSI layer because disks don't support
> partial logical block writes.

FYI, Bart has just been posting a patchset in that includes this, but
goes further.  Can you take a look at it?