From: Akira Fujita <a-fujita@rs.jp.nec.com>
Date: Thu, 4 Mar 2010 05:31:06 +0000 (-0500)
Subject: ext4: Fix insertion point of extent in mext_insert_across_blocks()
X-Git-Tag: v2.6.34-rc1~199^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5fd5249aa36fad98c9fd5edced352939e54f9324;p=pandora-kernel.git

ext4: Fix insertion point of extent in mext_insert_across_blocks()

If the leaf node has 2 extent space or fewer and EXT4_IOC_MOVE_EXT
ioctl is called with the file offset where after the 2nd extent
covers, mext_insert_across_blocks() always tries to insert extent into
the first extent.  As a result, the file gets corrupted because of
wrong extent order.  The patch fixes this problem.

Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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