From: Tejun Heo <tj@kernel.org>
Date: Fri, 22 May 2015 21:13:56 +0000 (-0400)
Subject: writeback: make wakeup_dirtytime_writeback() handle multiple bdi_writeback's
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~117^2~43
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=001fe6f617b1a352ad29cc3643384b3d8141dc07;p=pandora-kernel.git

writeback: make wakeup_dirtytime_writeback() handle multiple bdi_writeback's

wakeup_dirtytime_writeback() currently only starts writeback on the
root wb (bdi_writeback).  For cgroup writeback support, update the
function to check all wbs.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jan Kara <jack@suse.cz>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

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