[PATCH v2 1/5] generic/139: require 512 bytes to be the minimum dio size

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Due to generic/139 tests base on 512 bytes aligned, so skip this test
if the minimum dio write size >512. This patch also change the
common/rc::_require_dio helper, supports a minimum aligned size
argument.

Signed-off-by: Zorro Lang <zlang@xxxxxxxxxx>
---
 common/rc         | 17 ++++++++++++++---
 tests/generic/139 |  2 +-
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/common/rc b/common/rc
index 2f31ca46..6d384eaf 100644
--- a/common/rc
+++ b/common/rc
@@ -2721,9 +2721,12 @@ _require_xfs_io_command()
 	fi
 }
 
-# check that kernel and filesystem support direct I/O
+# check that kernel and filesystem support direct I/O, and check if "$1" size
+# aligned (optional) is supported
 _require_odirect()
 {
+	local alignment=${1:+"-b $1"}
+
 	if [ $FSTYP = "ext4" ] || [ $FSTYP = "f2fs" ] ; then
 		if echo "$MOUNT_OPTIONS" | grep -q "test_dummy_encryption"; then
 			_notrun "$FSTYP encryption doesn't support O_DIRECT"
@@ -2735,9 +2738,17 @@ _require_odirect()
 		fi
 	fi
 	local testfile=$TEST_DIR/$$.direct
-	$XFS_IO_PROG -F -f -d -c "pwrite 0 20k" $testfile > /dev/null 2>&1
+	local opt
+	if [ -n "$1" ];then
+		opt="-b $1"
+	fi
+	$XFS_IO_PROG -F -f -d -c "pwrite $opt 0 20k" $testfile > /dev/null 2>&1
 	if [ $? -ne 0 ]; then
-		_notrun "O_DIRECT is not supported"
+		if [ -n "$alignment" ]; then
+			_notrun "O_DIRECT aligned to $1 bytes is not supported"
+		else
+			_notrun "O_DIRECT is not supported"
+		fi
 	fi
 	rm -f $testfile 2>&1 > /dev/null
 }
diff --git a/tests/generic/139 b/tests/generic/139
index 0bbc222c..3eb1519d 100755
--- a/tests/generic/139
+++ b/tests/generic/139
@@ -26,7 +26,7 @@ _cleanup()
 # real QA test starts here
 _require_test_reflink
 _require_cp_reflink
-_require_odirect
+_require_odirect 512
 
 testdir=$TEST_DIR/test-$seq
 rm -rf $testdir
-- 
2.31.1




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