From: Tejun Heo <tj@kernel.org>
Date: Fri, 22 May 2015 21:14:02 +0000 (-0400)
Subject: writeback: dirty inodes against their matching cgroup bdi_writeback's
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~117^2~37
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0747259d13febfcc838980a63c414c9b920cea6f;p=pandora-kernel.git

writeback: dirty inodes against their matching cgroup bdi_writeback's

__mark_inode_dirty() always dirtied the inode against the root wb
(bdi_writeback).  The previous patches added all the infrastructure
necessary to attribute an inode against the wb of the dirtying cgroup.

This patch updates __mark_inode_dirty() so that it uses the wb
associated with the inode instead of unconditionally using the root
one.

Currently, none of the filesystems has FS_CGROUP_WRITEBACK and all
pages will keep being dirtied against the root wb.

v2: Updated for per-inode wb association.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

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