commit 6c3b46f74587d46e71b8c2b78fdca626a3aca280
author Christoph Hellwig <hch@lst.de> Mon May 18 14:38:28 2009 +0200
committer Jens Axboe <jens.axboe@oracle.com> Mon May 18 14:38:28 2009 +0200
tree 3d48a026a55c615d4072fc4b75dbca20949bad81
parent 77f6bf57ba9d2c50173536dbfdacdab27cb867ca

virtio_blk: don't blindly derefence req->rq_disk

request->rq_disk is only set for FS requests or BLOCK_PC requests
originating from the generic block layer scsi ioctls.  It's not set
for requests origination from other soures or internal cache flush
commands implemented by the patch I'll send after this.

So instead of using it to get at the private data in do_virtblk_request
setup queue->queuedata and use it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>