From a4a39040e9dacb5fa28b7ee7f842237ee534e7bf Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <tytso@mit.edu>
Date: Fri, 17 Aug 2012 09:58:17 -0400
Subject: [PATCH] ext4: check return value of blkdev_issue_flush()

blkdev_issue_flush() can fail; make sure the error gets properly
propagated.

This is a port of the equivalent ext3 patch from commit 44f4f729e7a1.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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Reading git-format-patch failed