From: Theodore Ts'o <tytso@mit.edu>
Date: Wed, 31 Aug 2011 15:56:51 +0000 (-0400)
Subject: ext4: fake direct I/O mode for data=journal
X-Git-Tag: v3.2-rc1~85^2~95
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=84ebd795613488992b273220c2937d575d27d2a9;p=pandora-kernel.git

ext4: fake direct I/O mode for data=journal

Currently attempts to open a file with O_DIRECT in data=journal mode
causes the open to fail with -EINVAL.  This makes it very hard to test
data=journal mode.  So we will let the open succeed, but then always
fall back to O_DSYNC buffered writes.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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