From: Theodore Ts'o <tytso@mit.edu>
Date: Thu, 28 Oct 2010 01:30:10 +0000 (-0400)
Subject: ext4: use bio layer instead of buffer layer in mpage_da_submit_io
X-Git-Tag: v2.6.37-rc1~76^2^2~19
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bd2d0210cf22f2bd0cef72eb97cf94fc7d31d8cc;p=pandora-kernel.git

ext4: use bio layer instead of buffer layer in mpage_da_submit_io

Call the block I/O layer directly instad of going through the buffer
layer.  This should give us much better performance and scalability,
as well as lowering our CPU utilization when doing buffered writeback.

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