From: Tao Ma <boyu.mt@taobao.com>
Date: Mon, 23 May 2011 02:36:43 +0000 (+0800)
Subject: ocfs2: Add ocfs2_trim_fs for SSD trim support.
X-Git-Tag: v3.0-rc1~137^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e80de36d8dbff216a384e9204e54d59deeadf344;p=pandora-kernel.git

ocfs2: Add ocfs2_trim_fs for SSD trim support.

Add ocfs2_trim_fs to support trimming freed clusters in the
volume. A range will be given and all the freed clusters greater
than minlen will be discarded to the block layer.

Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
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