Author: bryanv
Date: Sat Jan 18 18:39:39 2014
New Revision: 260857
URL: http://svnweb.freebsd.org/changeset/base/260857
Log:
MFC r260582: Add unmapped IO support to virtio_blk(4)
Modified:
stable/10/sys/dev/virtio/block/virtio_blk.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/dev/virtio/block/virtio_blk.c
==============================================================================
--- stable/10/sys/dev/virtio/block/virtio_blk.c Sat Jan 18 18:36:41 2014
(r260856)
+++ stable/10/sys/dev/virtio/block/virtio_blk.c Sat Jan 18 18:39:39 2014
(r260857)
@@ -726,7 +726,7 @@ vtblk_alloc_disk(struct vtblk_softc *sc,
dp->d_name = VTBLK_DISK_NAME;
dp->d_unit = device_get_unit(dev);
dp->d_drv1 = sc;
- dp->d_flags = DISKFLAG_CANFLUSHCACHE;
+ dp->d_flags = DISKFLAG_CANFLUSHCACHE | DISKFLAG_UNMAPPED_BIO;
dp->d_hba_vendor = virtio_get_vendor(dev);
dp->d_hba_device = virtio_get_device(dev);
dp->d_hba_subvendor = virtio_get_subvendor(dev);
@@ -931,10 +931,11 @@ vtblk_execute_request(struct vtblk_softc
sglist_append(sg, &req->vbr_hdr, sizeof(struct virtio_blk_outhdr));
if (bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE) {
- error = sglist_append(sg, bp->bio_data, bp->bio_bcount);
- if (error || sg->sg_nseg == sg->sg_maxseg)
+ error = sglist_append_bio(sg, bp);
+ if (error || sg->sg_nseg == sg->sg_maxseg) {
panic("%s: data buffer too big bio:%p error:%d",
__func__, bp, error);
+ }
/* BIO_READ means the host writes into our buffer. */
if (bp->bio_cmd == BIO_READ)
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