From: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Date: Wed, 20 Aug 2008 01:14:52 +0000 (-0400)
Subject: ext4: Initialize writeback_index to 0 when allocating a new inode
X-Git-Tag: v2.6.27-rc5~46^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=91246c009094142f95ecc7573b7caed2bcef52c7;p=pandora-kernel.git

ext4: Initialize writeback_index to 0 when allocating a new inode

The write_cache_pages() function uses the mapping->writeback_index as
the starting index to write out when range_cyclic is set.  Properly
initialize writeback_index so that we start the writeout at index 0.

This was found when debugging the small file fragmentation on ext4.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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