[PATCH v2 1/2] common/fuzzy: make _scratch_fuzz_modify work for non-xfs filesystems

["Luis Henriques (SUSE)" <luis.henriques@linux.dev>]

Since commit 9bab148bb3c7 ("common/fuzzy: exercise the filesystem a little
harder after repairing") funtion _scratch_fuzz_modify() has become
xfs-specific due to the use of some functions that assume this filesytem,
namely _xfs_force_bdev() and _xfs_has_feature().

Ensure _scratch_fuzz_modify() works again with other filesystems by using
these functions only when testing xfs.

Signed-off-by: Luis Henriques (SUSE) <luis.henriques@linux.dev>
---
 common/fuzzy | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/common/fuzzy b/common/fuzzy
index f5d45cb28f07..218fe1654386 100644
--- a/common/fuzzy
+++ b/common/fuzzy
@@ -8,15 +8,17 @@
 _scratch_fuzz_modify() {
 	echo "+++ stressing filesystem"
 	mkdir -p $SCRATCH_MNT/data
-	_xfs_force_bdev data $SCRATCH_MNT/data
+	[ "$FSTYP" == "xfs" ] && _xfs_force_bdev data $SCRATCH_MNT/data
 	$FSSTRESS_PROG -n $((TIME_FACTOR * 10000)) -p $((LOAD_FACTOR * 4)) -d $SCRATCH_MNT/data
 
-	if _xfs_has_feature "$SCRATCH_MNT" realtime; then
-		mkdir -p $SCRATCH_MNT/rt
-		_xfs_force_bdev realtime $SCRATCH_MNT/rt
-		$FSSTRESS_PROG -n $((TIME_FACTOR * 10000)) -p $((LOAD_FACTOR * 4)) -d $SCRATCH_MNT/rt
-	else
-		echo "+++ xfs realtime not configured"
+	if [ "$FSTYP" = "xfs" ]; then
+		if _xfs_has_feature "$SCRATCH_MNT" realtime; then
+			mkdir -p $SCRATCH_MNT/rt
+			_xfs_force_bdev realtime $SCRATCH_MNT/rt
+			$FSSTRESS_PROG -n $((TIME_FACTOR * 10000)) -p $((LOAD_FACTOR * 4)) -d $SCRATCH_MNT/rt
+		else
+			echo "+++ xfs realtime not configured"
+		fi
 	fi
 }