From fe451a01e888b6dcd8f5240dadb93692a1244fad Mon Sep 17 00:00:00 2001
From: Alasdair Kergon <agk@redhat.com>
Date: Mon, 28 Apr 2003 16:20:39 +0000
Subject: [PATCH] Try alternative syncs if BLKFLSBUF fails.

---
 lib/device/dev-io.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/device/dev-io.c b/lib/device/dev-io.c
index 8a8c47ad9..8281dc76a 100644
--- a/lib/device/dev-io.c
+++ b/lib/device/dev-io.c
@@ -72,7 +72,13 @@ int dev_get_sectsize(struct device *dev, uint32_t *size)
 
 static void _flush(int fd)
 {
-	ioctl(fd, BLKFLSBUF, 0);
+	if (ioctl(fd, BLKFLSBUF, 0) >= 0)
+		return;
+
+	if (fsync(fd) >= 0)
+		return;
+
+	sync();
 }
 
 int dev_open(struct device *dev, int flags)