Date: Mon, 18 Aug 2014 08:50:05 +0000 (UTC) From: Roger Pau Monné <royger@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r270130 - stable/10/sys/dev/xen/blkfront Message-ID: <201408180850.s7I8o53Q050143@svn.freebsd.org>
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Author: royger Date: Mon Aug 18 08:50:05 2014 New Revision: 270130 URL: http://svnweb.freebsd.org/changeset/base/270130 Log: MFC r269814: blkfront: add support for unmapped IO Sponsored by: Citrix Systems R&D Tested by: robak PR: 191173 Modified: stable/10/sys/dev/xen/blkfront/blkfront.c Modified: stable/10/sys/dev/xen/blkfront/blkfront.c ============================================================================== --- stable/10/sys/dev/xen/blkfront/blkfront.c Mon Aug 18 08:07:50 2014 (r270129) +++ stable/10/sys/dev/xen/blkfront/blkfront.c Mon Aug 18 08:50:05 2014 (r270130) @@ -272,8 +272,12 @@ xbd_queue_request(struct xbd_softc *sc, { int error; - error = bus_dmamap_load(sc->xbd_io_dmat, cm->cm_map, cm->cm_data, - cm->cm_datalen, xbd_queue_cb, cm, 0); + if (cm->cm_bp != NULL) + error = bus_dmamap_load_bio(sc->xbd_io_dmat, cm->cm_map, + cm->cm_bp, xbd_queue_cb, cm, 0); + else + error = bus_dmamap_load(sc->xbd_io_dmat, cm->cm_map, + cm->cm_data, cm->cm_datalen, xbd_queue_cb, cm, 0); if (error == EINPROGRESS) { /* * Maintain queuing order by freezing the queue. The next @@ -333,8 +337,6 @@ xbd_bio_command(struct xbd_softc *sc) } cm->cm_bp = bp; - cm->cm_data = bp->bio_data; - cm->cm_datalen = bp->bio_bcount; cm->cm_sector_number = (blkif_sector_t)bp->bio_pblkno; switch (bp->bio_cmd) { @@ -993,7 +995,7 @@ xbd_instance_create(struct xbd_softc *sc sc->xbd_disk->d_mediasize = sectors * sector_size; sc->xbd_disk->d_maxsize = sc->xbd_max_request_size; - sc->xbd_disk->d_flags = 0; + sc->xbd_disk->d_flags = DISKFLAG_UNMAPPED_BIO; if ((sc->xbd_flags & (XBDF_FLUSH|XBDF_BARRIER)) != 0) { sc->xbd_disk->d_flags |= DISKFLAG_CANFLUSHCACHE; device_printf(sc->xbd_dev,
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