From: Eric Sandeen <sandeen@redhat.com>
Date: Fri, 11 Jul 2008 23:27:31 +0000 (-0400)
Subject: ext4: call blkdev_issue_flush on fsync
X-Git-Tag: v2.6.27-rc1~1087^2~27
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d755fb384250d6bd7fd18a0930e71965acc8e72e;p=pandora-kernel.git

ext4: call blkdev_issue_flush on fsync

To ensure that bits are truly on-disk after an fsync,
we should call blkdev_issue_flush if barriers are supported.

Inspired by an old thread on barriers, by reiserfs & xfs
which do the same, and by a patch SuSE ships with their kernel

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

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