MFC r238980:

  Just like the other file systems found in /sys/fs, g_vfs_open()
should be paried with g_vfs_close().  Though g_vfs_close() is a wrapper
around g_wither_geom_close(), r206130 added the following test in
g_vfs_open():

	if (bo->bo_private != vp)
		return (EBUSY);

  Which will cause a 'Device busy' error inside reiserfs_mountfs() if
the same file system is re-mounted again after umount or mounting failure:

	(case 1, /dev/ad4s3 is not a valid REISERFS partition)
	# mount -t reiserfs -o ro /dev/ad4s3 /mnt
	mount: /dev/ad4s3: Invalid argument
	# mount -t msdosfs -o ro /dev/ad4s3 /mnt
	mount: /dev/ad4s3: Device busy

	(case 2, /dev/ad4s3 is a valid REISERFS partition)
	# mount -t reiserfs -o ro /dev/ad4s3 /mnt
	# umount /mnt
	# mount -t reiserfs -o ro /dev/ad4s3 /mnt
	mount: /dev/ad4s3: Device busy

  On the other hand, g_vfs_close() 'fixed' the above cases by doing an
extra step to keep 'sc->sc_bo->bo_private' and 'cp->private' pointers
synchronised.

Reviewed by:	kib

1 files changed, 2 insertions, 2 deletions

diff --git a/sys/gnu/fs/reiserfs/reiserfs_vfsops.c b/sys/gnu/fs/reiserfs/reiserfs_vfsops.c
index 31b653f83cb7..95d046dae935 100644
--- a/sys/gnu/fs/reiserfs/reiserfs_vfsops.c
+++ b/sys/gnu/fs/reiserfs/reiserfs_vfsops.c
@@ -227,7 +227,7 @@ reiserfs_unmount(struct mount *mp, int mntflags)
 
 	DROP_GIANT();
 	g_topology_lock();
-	g_wither_geom_close(rmp->rm_cp->geom, ENXIO);
+	g_vfs_close(rmp->rm_cp);
 	g_topology_unlock();
 	PICKUP_GIANT();
 	vrele(rmp->rm_devvp);
@@ -638,7 +638,7 @@ out:
 	if (cp != NULL) {
 		DROP_GIANT();
 		g_topology_lock();
-		g_wither_geom_close(cp->geom, ENXIO);
+		g_vfs_close(cp);
 		g_topology_unlock();
 		PICKUP_GIANT();
 	}