Re: [PATCH v4] scsi: support packing multi-segment in UNMAP command

[Bart Van Assche]

On 6/16/22 19:01, Martin K. Petersen wrote:
> > As SCSI SBC4 specification section 5.30.2 describes that it can
> > support unmapping one or more LBA range in single UNMAP command.
> >
> > However, previously we only pack one LBA range in UNMAP command by
> > default no matter device gives the block limits that says it can
> > support unmapping multiple LBA ranges with a single UNMAP command.
> >
> > This patch sets max_discard_segments config according to block limits
> > of device, and supports unmapping multiple LBA ranges with a single
> > UNMAP command.
>
> This looks OK to me. Will test with a variety of targets.

Hi Martin,

Have you already had the chance to test this patch? We would like to use 
this functionality in Android.

Thanks,

Bart.