tree ff1bde3fa17785519863f3880fecbb6b6fcd148a
parent 69a60c4d177632bd56ae567dc0a082f7119b71c2
author Tao Ma <boyu.mt@taobao.com> 1306118203 +0800
committer Joel Becker <jlbec@evilplan.org> 1306219038 -0700

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>