From: Andreas Rohner <andreas.rohner@gmx.net>
Date: Thu, 3 Apr 2014 21:50:29 +0000 (-0700)
Subject: nilfs2: add nilfs_sufile_trim_fs to trim clean segs
X-Git-Tag: v3.15-rc1~106^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=82e11e857be3ffd2a0a952c9db8aa2379e2b9e44;p=pandora-kernel.git

nilfs2: add nilfs_sufile_trim_fs to trim clean segs

Add nilfs_sufile_trim_fs(), which takes an fstrim_range structure and
calls blkdev_issue_discard for every clean segment in the specified
range.  The range is truncated to file system block boundaries.

Signed-off-by: Andreas Rohner <andreas.rohner@gmx.net>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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