tree 4629aabe88bf095d58eabd2f451207695bb35b08
parent 51d654e1d885607a6edd02b337105fa5c28b6d33
author Martin K. Petersen <martin.petersen@oracle.com> 1214849081 +0200
committer Jens Axboe <jens.axboe@oracle.com> 1215084073 +0200

block: Block layer data integrity support

Some block devices support verifying the integrity of requests by way
of checksums or other protection information that is submitted along
with the I/O.

This patch implements support for generating and verifying integrity
metadata, as well as correctly merging, splitting and cloning bios and
requests that have this extra information attached.

See Documentation/block/data-integrity.txt for more information.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>