[PATCH 5/8] generic/740: enable by default

[Christoph Hellwig <hch@lst.de>]

Instead of limiting this test to a few file systems, opt out the
file systems supported in common/rc that don't support overwrite
checking at all, and those like extN that support it, but only when
run interactively.

Also remove support for really old mkfs.btrfs versions that lack
the overwrite check.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 tests/generic/740 | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/tests/generic/740 b/tests/generic/740
index bac927227..903e891db 100755
--- a/tests/generic/740
+++ b/tests/generic/740
@@ -12,19 +12,16 @@ _begin_fstest mkfs auto quick
 # Import common functions.
 . ./common/filter
 
-# real QA test starts here
-_supported_fs xfs btrfs
+# a bunch of file systems don't support foreign fs detection
+# ext* do support it, but disable the feature when called non-interactively
+_supported_fs ^ext2 ^ext3 ^ext4 ^jfs ^ocfs2 ^udf
 
-_require_scratch_nocheck
-_require_no_large_scratch_dev
+_require_block_device "${SCRATCH_DEV}"
 # not all the FS support zoned block device
 _require_non_zoned_device "${SCRATCH_DEV}"
 
-# mkfs.btrfs did not have overwrite detection at first
-if [ "$FSTYP" == "btrfs" ]; then
-	grep -q 'force overwrite' `echo $MKFS_BTRFS_PROG | awk '{print $1}'` || \
-		_notrun "Installed mkfs.btrfs does not support -f option"
-fi
+_require_scratch_nocheck
+_require_no_large_scratch_dev
 
 echo "Silence is golden."
 for fs in `echo ${MKFS_PROG}.* | sed -e "s:${MKFS_PROG}.::g"`
-- 
2.43.0