[PATCH 2/4] overlay/036: fix upper/lower dir mismatch

[Amir Goldstein <amir73il@gmail.com>]

Mount option index=on checks on mount that upper dir is not being
reused with a different lower dir than the first lower dir it was
mounted with. This behavior is verified by test overlay/037.

In this test however, it is not desired to fail mount on mismatch of
upper/lower, so use the matching upper/lower dirs in this test.

The mismatch went unnoticed because the index=off mounts do not verify
lower dir and the index=on mounts fails on EBUSY (dir in use by another
live mount) before failing on ESTALE (upper/lower dir mismatch).

Never the less, fix the mismatch, so a change in the kernel between
the two sanity checks (EBUSY vs. ESTALE) won't break the test.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
---
 tests/overlay/036 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/overlay/036 b/tests/overlay/036
index e0c13ae..e04aaee 100755
--- a/tests/overlay/036
+++ b/tests/overlay/036
@@ -90,7 +90,7 @@ _overlay_mount_dirs $lowerdir $upperdir $workdir \
 
 # Try to mount another overlay with the same upperdir
 # with index=off - expect success
-_overlay_mount_dirs $lowerdir2 $upperdir $workdir2 \
+_overlay_mount_dirs $lowerdir $upperdir $workdir2 \
 		    overlay0 $SCRATCH_MNT -oindex=off && \
 		    $UMOUNT_PROG $SCRATCH_MNT
 
@@ -102,7 +102,7 @@ _overlay_mount_dirs $lowerdir2 $upperdir2 $workdir \
 
 # Try to mount another overlay with the same upperdir
 # with index=on - expect EBUSY
-_overlay_mount_dirs $lowerdir2 $upperdir $workdir2 \
+_overlay_mount_dirs $lowerdir $upperdir $workdir2 \
 	    overlay2 $SCRATCH_MNT -oindex=on 2>&1 | _filter_busy_mount
 
 # Try to mount another overlay with the same workdir
-- 
2.7.4