[PATCH v4 3/3] xfs: add memory failure test for partly-reflinked&dax file

[Shiyang Ruan <ruansy.fnst@fujitsu.com>]

Verify that dax-rmap works for both normal extent and shared extent.

Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
---
 tests/xfs/902     | 54 +++++++++++++++++++++++++++++++++++++++++++++++
 tests/xfs/902.out |  9 ++++++++
 2 files changed, 63 insertions(+)
 create mode 100755 tests/xfs/902
 create mode 100644 tests/xfs/902.out

diff --git a/tests/xfs/902 b/tests/xfs/902
new file mode 100755
index 000000000..39308700d
--- /dev/null
+++ b/tests/xfs/902
@@ -0,0 +1,54 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2022 Fujitsu Limited.  All Rights Reserved.
+#
+# FS QA Test No. 902
+#
+# Test memory failure mechanism when dax and reflink working together
+#   test for partly reflinked file
+#
+. ./common/preamble
+_begin_fstest auto quick clone dax
+
+# Import common functions.
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_require_check_dmesg
+_require_scratch_reflink
+_require_xfs_scratch_rmapbt
+_require_scratch_dax_mountopt "dax"
+_require_test_program "t_mmap_cow_memory_failure"
+
+echo "Format and mount"
+_scratch_mkfs > $seqres.full 2>&1
+_scratch_mount "-o dax" >> $seqres.full 2>&1
+
+testdir=$SCRATCH_MNT/test-$seq
+mkdir $testdir
+
+echo "Create the original files"
+nr=16
+blksz=$(get_page_size)
+_pwrite_byte 0x61 0 $((blksz * nr)) $testdir/testfile >> $seqres.full
+_pwrite_byte 0x62 0 $((blksz * nr)) $testdir/poisonfile >> $seqres.full
+seq 0 2 $((nr - 1)) | while read i; do
+	_reflink_range $testdir/testfile $((blksz * i)) \
+		$testdir/poisonfile $((blksz * i)) $blksz >> $seqres.full
+done
+_scratch_cycle_mount "dax"
+
+echo "Inject memory failure (1 page)"
+$here/src/t_mmap_cow_memory_failure -s1 -S1 -R $testdir/testfile -P $testdir/poisonfile
+
+echo "Inject memory failure (2 pages)"
+# poison on reflinked page and not reflinked page
+$here/src/t_mmap_cow_memory_failure -s2 -S2 -R $testdir/testfile -P $testdir/poisonfile
+
+_check_dmesg_for "Sending SIGBUS to t_mmap_cow_memo" || echo "Memory failure didn't kill the process"
+_check_dmesg_for "recovery action for dax page: Recovered" || echo "Failured page didn't recovered"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/902.out b/tests/xfs/902.out
new file mode 100644
index 000000000..ed8ff67ca
--- /dev/null
+++ b/tests/xfs/902.out
@@ -0,0 +1,9 @@
+QA output created by 902
+Format and mount
+Create the original files
+Inject memory failure (1 page)
+Inject poison...
+Process is killed by signal: 7
+Inject memory failure (2 pages)
+Inject poison...
+Process is killed by signal: 7
-- 
2.37.1