From: Mingming <cmm@us.ibm.com>
Date: Tue, 10 Nov 2009 15:48:04 +0000 (-0500)
Subject: ext4: skip conversion of uninit extents after direct IO if there isn't any
X-Git-Tag: v2.6.32-rc7~49^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f5249507e4b5c4fc0f9c93f33d133d8c95f47e1;p=pandora-kernel.git

ext4: skip conversion of uninit extents after direct IO if there isn't any

At the end of direct I/O operation, ext4_ext_direct_IO() always called
ext4_convert_unwritten_extents(), regardless of whether there were any
unwritten extents involved in the I/O or not.

This commit adds a state flag so that ext4_ext_direct_IO() only calls
ext4_convert_unwritten_extents() when necessary.

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

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