MFC r299908,300131,301275: zfs: set VROOT / VV_ROOT consistently and in

a single place

3 files changed, 4 insertions, 13 deletions

diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c
index 1c20aee..9aa46636 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c
@@ -1053,13 +1053,6 @@ zfsctl_snapdir_lookup(ap)
 			 */
 			VERIFY(zfsctl_snapshot_zname(dvp, nm, MAXNAMELEN, snapname) == 0);
 			goto domount;
-		} else {
-			/*
-			 * VROOT was set during the traverse call.  We need
-			 * to clear it since we're pretending to be part
-			 * of our parent's vfs.
-			 */
-			(*vpp)->v_flag &= ~VROOT;
 		}
 		mutex_exit(&sdp->sd_lock);
 		ZFS_EXIT(zfsvfs);
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c
index 4a91c4a..d4f51c7 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c
@@ -1781,11 +1781,8 @@ zfs_root(vfs_t *vfsp, int flags, vnode_t **vpp)
 
 	ZFS_EXIT(zfsvfs);
 
-	if (error == 0) {
+	if (error == 0)
 		error = vn_lock(*vpp, flags);
-		if (error == 0)
-			(*vpp)->v_vflag |= VV_ROOT;
-	}
 	if (error != 0)
 		*vpp = NULL;
 
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_znode.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_znode.c
index 431a05d..3853838 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_znode.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_znode.c
@@ -574,9 +574,10 @@ zfs_znode_sa_init(zfsvfs_t *zfsvfs, znode_t *zp,
 	zp->z_is_sa = (obj_type == DMU_OT_SA) ? B_TRUE : B_FALSE;
 
 	/*
-	 * Slap on VROOT if we are the root znode
+	 * Slap on VROOT if we are the root znode unless we are the root
+	 * node of a snapshot mounted under .zfs.
 	 */
-	if (zp->z_id == zfsvfs->z_root)
+	if (zp->z_id == zfsvfs->z_root && zfsvfs->z_parent == zfsvfs)
 		ZTOV(zp)->v_flag |= VROOT;
 
 	mutex_exit(&zp->z_lock);