| commit | 53eab6fd2777dc7cb338519827e23f8bf892903e | [log] [tgz] |
|---|---|---|
| author | Paolo Bonzini <pbonzini@redhat.com> | Fri Aug 21 15:53:55 2015 -0700 |
| committer | Michael S. Tsirkin <mst@redhat.com> | Tue Sep 08 13:29:14 2015 +0300 |
| tree | 29fc9d97ab032f82cd49bad8737cd4c6d0ad223c | |
| parent | 64291f7db5bd8150a74ad2036f1037e6a0428df2 [diff] |
virtio-blk: use VIRTIO_BLK_F_WCE and VIRTIO_BLK_F_CONFIG_WCE in virtio1 VIRTIO_BLK_F_CONFIG_WCE is important in order to achieve good performance (up to 2x, though more realistically +30-40%) in latency-bound workloads. However, it was removed by mistake together with VIRTIO_BLK_F_FLUSH. It will be restored in the next revision of the virtio 1.0 standard, so do the same in Linux. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>