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Date:   Fri, 14 Feb 2020 10:20:01 +0800
From:   "zhangyi (F)" <yi.zhang@...wei.com>
To:     <fstests@...r.kernel.org>, <guaneryu@...il.com>
CC:     <linux-ext4@...r.kernel.org>, <yi.zhang@...wei.com>
Subject: [PATCH] ext4/021: make sure the fdatasync subprocess exits

Now we just kill fdatasync_work process and wait nothing after the
test, so a busy unmount failure may appear if the fdatasync syscall
doesn't return in time.

  umount: /tmp/scratch: target is busy.
  mount: /tmp/scratch: /dev/sdb already mounted on /tmp/scratch.
  !!! failed to remount /dev/sdb on /tmp/scratch

This patch kill and wait the xfs_io fdatasync subprocess to make sure
_check_scratch_fs success.

Signed-off-by: zhangyi (F) <yi.zhang@...wei.com>
---
 tests/ext4/021 | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/ext4/021 b/tests/ext4/021
index 519737e1..1b4a1ced 100755
--- a/tests/ext4/021
+++ b/tests/ext4/021
@@ -18,6 +18,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 
 _cleanup()
 {
+	$KILLALL_PROG -wq xfs_io
 	cd /
 	rm -f $tmp.*
 }
-- 
2.23.0.rc2.8.gff66981f45

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