generic/60[78]: ensure the initial DAX file flag state before test

Since this test checks the behaviors of both the in-core S_DAX flag and
the ondisk FS_XFLAG_DAX inode flags, it must be careful about the
initial state of the filesystem w.r.t. the inode flag.

Make sure that the root directory does /not/ have the inode flag set
before we begin testing, so that the initial state doesn't throw off
inheritance testing.

[Eryu: change chattr command to xfs_io -c 'chattr']

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

tests/generic/607

@@ -156,6 +156,10 @@ do_xflag_tests()
 	local option=$1
 
 	_scratch_mount "$option"
+
+	# Make sure the root dir doesn't have FS_XFLAG_DAX set before we start.
+	$XFS_IO_PROG -c "chattr -x" $SCRATCH_MNT &>> $seqres.full
+
 	cd $SCRATCH_MNT
 
 	for i in $(seq 1 5); do

tests/generic/608

@@ -98,6 +98,9 @@ do_tests()
 
 	_scratch_mount "$mount_option"
 
+	# Make sure the root dir doesn't have FS_XFLAG_DAX set before we start.
+	$XFS_IO_PROG -c "chattr -x" $SCRATCH_MNT &>> $seqres.full
+
 	test_drop_caches
 
 	test_cycle_mount "$cycle_mount_option"