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+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2024 Oppo. All Rights Reserved.
+#
+# FS QA Test No. f2fs/004
+#
+# Test that we will simulate race case in between sqlite atomic write
+# and direct IO w/ below steps:
+# 1. create a regular file, and initialize it w/ 0xff data
+# 2. start transaction (via F2FS_IOC_START_ATOMIC_WRITE) on it
+# 3. write transaction data
+# 4. trigger direct read/write IO to check whether it fails or not
+# 5. commit and end the transaction (via F2FS_IOC_COMMIT_ATOMIC_WRITE)
+# This is a regression test to check handling of race condition in
+# between atomic_write and direct IO.
+#
+. ./common/preamble
+_begin_fstest auto quick
+
+. ./common/filter
+
+_supported_fs f2fs
+_require_scratch
+_require_xfs_io_command "pwrite"
+
+_scratch_mkfs >> $seqres.full
+_scratch_mount >> $seqres.full
+
+dbfile=$SCRATCH_MNT/dbfile
+
+# start atomic_write on dbfile & write data to dbfile
+touch $dbfile
+$F2FS_IO_PROG write 1 0 32 zero atomic_commit $dbfile 3000 >> $seqres.full &
+
+# simulate concurrent direct read/write IO
+$XFS_IO_PROG -d -c "pread 0 128k" $dbfile
+$XFS_IO_PROG -d -c "pwrite 0 128k" $dbfile
+
+# wait for atomic_write commit completion
+sleep 5
+
+_scratch_unmount
+
+status=0
+exit
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+QA output created by 004
+pread: Operation not supported
+pwrite: Operation not supported
In this patch, we simulate race case in between sqlite atomic write and direct IO w/ below steps: 1. create a regular file, and initialize it w/ 0xff data 2. start transaction (via F2FS_IOC_START_ATOMIC_WRITE) on it 3. write transaction data 4. trigger direct read/write IO on it to check whether it fails or not 5. commit and end the transaction (via F2FS_IOC_COMMIT_ATOMIC_WRITE) This is a regression test to check handling of race condition in between atomic_write and direct IO. Cc: Jaegeuk Kim <jaegeuk@kernel.org> Cc: Daeho Jeong <daehojeong@google.com> Signed-off-by: Chao Yu <chao@kernel.org> --- tests/f2fs/004 | 45 +++++++++++++++++++++++++++++++++++++++++++++ tests/f2fs/004.out | 3 +++ 2 files changed, 48 insertions(+) create mode 100755 tests/f2fs/004 create mode 100644 tests/f2fs/004.out