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

[Hannes Reinecke]

On 09/29/2016 02:39 AM, 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.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong at oracle.com>
> Reviewed-by: Christoph Hellwig <hch at lst.de>
> Reviewed-by: Bart Van Assche <bart.vanassche at sandisk.com>
> Reviewed-by: Martin K. Petersen <martin.petersen at oracle.com>
> ---
>  block/blk-lib.c |   15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
Reviewed-by: Hannes Reinecke <hare at suse.com>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      zSeries & Storage
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