virtio-blk: use virtqueue_add_sgs on req path

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(This is a respin of Paolo Bonzini's patch, but it calls
virtqueue_add_sgs() instead of his multi-part API).

This is similar to the previous patch, but a bit more radical
because the bio and req paths now share the buffer construction
code.  Because the req path doesn't use vbr->sg, however, we
need to add a couple of arguments to __virtblk_add_req.

We also need to teach __virtblk_add_req how to build SCSI command
requests.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Asias He <asias@redhat.com>

...

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Paolo Bonzini 2013-03-20 15:44:27 +10:30 • committed by Rusty Russell

parent 8f39db9d37

commit 20af3cfd20

1 changed files with 33 additions and 36 deletions

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drivers/block/virtio_blk.c

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