Date: Mon, 13 Jan 2014 04:43:01 +0000 (UTC) From: Bryan Venteicher <bryanv@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r260582 - head/sys/dev/virtio/block Message-ID: <201401130443.s0D4h1nS090095@svn.freebsd.org>
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Author: bryanv Date: Mon Jan 13 04:43:01 2014 New Revision: 260582 URL: http://svnweb.freebsd.org/changeset/base/260582 Log: Add unmapped IO support to virtio_blk(4) Modified: head/sys/dev/virtio/block/virtio_blk.c Modified: head/sys/dev/virtio/block/virtio_blk.c ============================================================================== --- head/sys/dev/virtio/block/virtio_blk.c Mon Jan 13 04:41:08 2014 (r260581) +++ head/sys/dev/virtio/block/virtio_blk.c Mon Jan 13 04:43:01 2014 (r260582) @@ -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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