[PATCH] ext4/048: skip test of filename wipe if journal checkpoint is not supported

["Theodore Ts'o" <tytso@mit.edu>]

ext4/048 will fail when running on older kernels that don't support
the filename wipe feature.  The journal checkpoint ioctl is a related
feature, and landed just a little bit after filename wipe feature, so
use support for the journal checkpoint ioctl as a proxy for support
for the filename wipe feature.

Without this change, this test will fail when tesing 5.10, 5.4, and
other LTS kernels.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: Leah Rumancik <leah.rumancik@gmail.com>
---
 tests/ext4/048 | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tests/ext4/048 b/tests/ext4/048
index 51189618..35e6aa7f 100755
--- a/tests/ext4/048
+++ b/tests/ext4/048
@@ -93,6 +93,14 @@ _scratch_mkfs_sized $((128 * 1024 * 1024)) >> $seqres.full 2>&1
 # create scratch dir for testing
 # create some files with no name a substr of another name so we can grep later
 _scratch_mount >> $seqres.full 2>&1
+
+# Use the presence of the journal checkpoint ioctl as a proxy of filename
+# wipe being supported
+if test -x $here/src/checkpoint_journal && \
+	! $here/src/checkpoint_journal $SCRATCH_MNT --dry-run ; then
+    _notrun "filename wipe not supported"
+fi
+
 blocksize="$(_get_block_size $SCRATCH_MNT)"
 mkdir $testdir
 file_num=1
-- 
2.31.0