From: Christoph Hellwig <hch@lst.de>
Date: Wed, 23 Sep 2009 13:07:30 +0000 (+0200)
Subject: direct I/O fallback sync simplification
X-Git-Tag: v2.6.33-rc1~49^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c05c4edd876b7ae92787d1295868afcb89b6a348;p=pandora-kernel.git

direct I/O fallback sync simplification

In the case of direct I/O falling back to buffered I/O we sync data
twice currently: once at the end of generic_file_buffered_write using
filemap_write_and_wait_range and once a little later in
__generic_file_aio_write using do_sync_mapping_range with all flags set.

The wait before write of the do_sync_mapping_range call does not make
any sense, so just keep the filemap_write_and_wait_range call and move
it to the right spot.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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