tree 29bce2b6f2dc86433f9615a1a6a8628840ad680d
parent 1c8457cadc9cefe7ec920a2f3537ff1fe20f4061
author Zheng Liu <gnehzuil.liu@gmail.com> 1341097977 -0400
committer Theodore Ts'o <tytso@mit.edu> 1341097977 -0400

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>