From f4e95b3316c4daa43224753bb98f41456fef86c7 Mon Sep 17 00:00:00 2001
From: Zheng Liu <gnehzuil.liu@gmail.com>
Date: Sat, 30 Jun 2012 19:12:57 -0400
Subject: [PATCH] ext4: honor O_(D)SYNC semantic in ext4_fallocate()

Ext4 must make sure the transaction to be commited to the disk when
user opens a file with O_(D)SYNC flag and do a fallocate(2) call.

This problem had been reported by Christoph Hellwig in this thread:
http://www.spinics.net/lists/linux-btrfs/msg13621.html

Reported-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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Reading git-format-patch failed