Date: Sat, 17 Apr 2010 11:57:41 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r206756 - stable/8/sys/geom Message-ID: <201004171157.o3HBvfWP048984@svn.freebsd.org>
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Author: avg Date: Sat Apr 17 11:57:41 2010 New Revision: 206756 URL: http://svn.freebsd.org/changeset/base/206756 Log: MFC r206130: g_vfs_open: allow only one mount per device vnode Modified: stable/8/sys/geom/geom_vfs.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) Modified: stable/8/sys/geom/geom_vfs.c ============================================================================== --- stable/8/sys/geom/geom_vfs.c Sat Apr 17 11:40:39 2010 (r206755) +++ stable/8/sys/geom/geom_vfs.c Sat Apr 17 11:57:41 2010 (r206756) @@ -163,6 +163,10 @@ g_vfs_open(struct vnode *vp, struct g_co g_topology_assert(); *cpp = NULL; + bo = &vp->v_bufobj; + if (bo->bo_private != vp) + return (EBUSY); + pp = g_dev_getprovider(vp->v_rdev); if (pp == NULL) return (ENOENT); @@ -178,7 +182,7 @@ g_vfs_open(struct vnode *vp, struct g_co vnode_create_vobject(vp, pp->mediasize, curthread); VFS_UNLOCK_GIANT(vfslocked); *cpp = cp; - bo = &vp->v_bufobj; + cp->private = vp; bo->bo_ops = g_vfs_bufops; bo->bo_private = cp; bo->bo_bsize = pp->sectorsize; @@ -198,5 +202,6 @@ g_vfs_close(struct g_consumer *cp) gp = cp->geom; bo = gp->softc; bufobj_invalbuf(bo, V_SAVE, 0, 0); + bo->bo_private = cp->private; g_wither_geom_close(gp, ENXIO); }
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