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07f490ac97
freebsd-nq/sys/dev/virtio
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Bryan Venteicher 4dbc384845 Only set the barrier flag if the feature was negotiated 
When the VirtIO barrier feature is not negotiated, the driver
must enforce the proper ordering for BIO_ORDERED BIOs. All the
in-flight BIOs must complete before starting the BIO, and the
ordered BIO must complete before subsequent BIOs can start.

Also fix a few whitespace nits.

Reported by:	neel
Approved by:	grehan (mentor)
MFC after:	3 days
2013-03-05 07:00:05 +00:00
..
balloon Various VirtIO improvements 2012-07-11 02:57:19 +00:00
block Only set the barrier flag if the feature was negotiated 2013-03-05 07:00:05 +00:00
network virtio: Start taskqueues threads after attach cannot fail 2012-12-14 05:27:56 +00:00
pci Various VirtIO improvements 2012-07-11 02:57:19 +00:00
scsi Reform the busdma API so that new types may be added without modifying 2013-02-12 16:57:20 +00:00
virtio_bus_if.m
virtio_if.m
virtio_ring.h Various VirtIO improvements 2012-07-11 02:57:19 +00:00
virtio.c Virtio SCSI driver 2012-10-11 23:41:18 +00:00
virtio.h Virtio SCSI driver 2012-10-11 23:41:18 +00:00
virtqueue.c Patch from Bryan to fix a virtqueue issue: 2012-10-11 23:03:42 +00:00
virtqueue.h Various VirtIO improvements 2012-07-11 02:57:19 +00:00