xfs/838: actually force usage of the realtime device

Actually force the filesystem to create testfile as a realtime file so
that the test does anything useful.

Cc: fstests@vger.kernel.org # v2025.07.13
Fixes: 7ca990e22e0d61 ("xfs: more multi-block atomic writes tests")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Zorro Lang <zlang@kernel.org>

diff --git a/tests/xfs/838 b/tests/xfs/838
index 73e91530b53a67145e662e761f6eaa28f73ec98c..84e6a750eb07ab1c38324f9146d36c1c729e8bd6 100755 (executable)
--- a/tests/xfs/838
+++ b/tests/xfs/838
@@ -23,6 +23,7 @@ $XFS_IO_PROG -c "statx -r -m $STATX_WRITE_ATOMIC" $SCRATCH_RTDEV >> $seqres.full
 
 _scratch_mkfs >> $seqres.full
 _scratch_mount
+_xfs_force_bdev realtime $SCRATCH_MNT
 
 testfile=$SCRATCH_MNT/testfile
 touch $testfile