From: Hannes Reinecke <hare@suse.de>
Date: Mon, 18 May 2009 12:41:30 +0000 (+0200)
Subject: virtio_blk: SG_IO passthru support
X-Git-Tag: v2.6.31-rc1~389^2~51
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1cde26f928863d90e9e7c1217880c8450464d305;p=pandora-kernel.git

virtio_blk: SG_IO passthru support

Add support for SG_IO passthru to virtio_blk.  We add the scsi command
block after the normal outhdr, and the scsi inhdr with full status
information aswell as the sense buffer before the regular inhdr.

[hch: forward ported, added the VIRTIO_BLK_F_SCSI flags, some comments
 and tested the whole beast]
[axboe: updated to use ->resid and not dual-path the byte count]

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (+ checkpatch.pl tweak)
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

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