[PATCH] xfstests: generic/255: Execute only if blocksize <= 4096

[chandan <chandan@linux.vnet.ibm.com>]

The patch adds the function _require_le_4k_blocksize to perform the
block size check on $TEST_DEV and $SCRATCH_DEV.

Signed-off-by: chandan <chandan@linux.vnet.ibm.com>
---
 common/rc         | 10 ++++++++++
 tests/generic/255 |  1 +
 2 files changed, 11 insertions(+)

diff --git a/common/rc b/common/rc
index ae80b12..d8ee132 100644
--- a/common/rc
+++ b/common/rc
@@ -2106,6 +2106,16 @@ _require_dumpe2fs()
 	fi
 }
 
+_require_le_4k_blocksize()
+{
+	test_dev_bs=`stat -f $TEST_DEV | grep "Block size" | cut -d " " -f3`
+	scratch_dev_bs=`stat -f $SCRATCH_DEV | grep "Block size" | cut -d " " -f3`
+
+	if (( $test_dev_bs > 4096 || $scratch_dev_bs > 4096 )); then
+		_notrun "This test requires a filesystem with a block size less than or equal to 4k."
+	fi
+}
+
 _create_loop_device()
 {
 	file=$1
diff --git a/tests/generic/255 b/tests/generic/255
index dd329b4..763e861 100755
--- a/tests/generic/255
+++ b/tests/generic/255
@@ -49,6 +49,7 @@ _supported_os Linux
 _require_xfs_io_falloc_punch
 _require_xfs_io_falloc
 _require_xfs_io_fiemap
+_require_le_4k_blocksize
 
 testfile=$TEST_DIR/255.$$
 
-- 
1.8.3.1