From b90e14fa312517b98a0086cdf93282b7da454c24 Mon Sep 17 00:00:00 2001
From: Eric Whitney <enwlinux@gmail.com>
Date: Tue, 22 Apr 2014 10:47:28 +1000
Subject: [PATCH] common: add helper for zero range support check

Add a helper function to verify fallocate zero range support in a style
similar to _require_xfs_io_falloc_collapse(), etc.

Signed-off-by: Eric Whitney <enwlinux@gmail.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
---
 common/rc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/common/rc b/common/rc
index 1d2ccb95..07acbc57 100644
--- a/common/rc
+++ b/common/rc
@@ -1288,6 +1288,13 @@ _require_xfs_io_falloc_collapse()
 	_require_xfs_io_command "fcollapse"
 }
 
+# check that xfs_io, kernel, and filesystem all support fallocate with zero
+# range
+_require_xfs_io_falloc_zero()
+{
+	_require_xfs_io_command "fzero"
+}
+
 # check that xfs_io, kernel and filesystem support fiemap
 _require_xfs_io_fiemap()
 {
-- 
2.39.5