diff mbox

[2/2] virtio_blk: fix comment for virtio 1.0

Message ID 1425192883-5930-3-git-send-email-mst@redhat.com
State New
Headers show

Commit Message

Michael S. Tsirkin March 1, 2015, 7:39 a.m. UTC
Fix up comment to match virtio 1.0 logic:
virtio_blk_outhdr isn't the first elements anymore,
the only requirement is that it comes first in
the s/g list.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 include/uapi/linux/virtio_blk.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

Comments

Rusty Russell March 2, 2015, 12:15 a.m. UTC | #1
"Michael S. Tsirkin" <mst@redhat.com> writes:
> Fix up comment to match virtio 1.0 logic:
> virtio_blk_outhdr isn't the first elements anymore,
> the only requirement is that it comes first in
> the s/g list.
>
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Thanks, both applied.

Cheers,
Rusty.
Michael S. Tsirkin March 5, 2015, 8:40 a.m. UTC | #2
On Mon, Mar 02, 2015 at 10:45:37AM +1030, Rusty Russell wrote:
> "Michael S. Tsirkin" <mst@redhat.com> writes:
> > Fix up comment to match virtio 1.0 logic:
> > virtio_blk_outhdr isn't the first elements anymore,
> > the only requirement is that it comes first in
> > the s/g list.
> >
> > Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> 
> Thanks, both applied.
> 
> Cheers,
> Rusty.

Hmm, I don't see them in your virtio-next tree.
Did I miss something?
I know these are just headers but it's in UAPI
so I'd like to make them correct ASAP.
diff mbox

Patch

diff --git a/include/uapi/linux/virtio_blk.h b/include/uapi/linux/virtio_blk.h
index b695ba9..19c66fc 100644
--- a/include/uapi/linux/virtio_blk.h
+++ b/include/uapi/linux/virtio_blk.h
@@ -119,7 +119,11 @@  struct virtio_blk_config {
 #define VIRTIO_BLK_T_BARRIER	0x80000000
 #endif /* !VIRTIO_BLK_NO_LEGACY */
 
-/* This is the first element of the read scatter-gather list. */
+/*
+ * This comes first in the read scatter-gather list.
+ * For legacy virtio, if VIRTIO_F_ANY_LAYOUT is not negotiated,
+ * this is the first element of the read scatter-gather list.
+ */
 struct virtio_blk_outhdr {
 	/* VIRTIO_BLK_T* */
 	__virtio32 type;