From: Jan Kara <jack@suse.cz>
Date: Tue, 3 Jul 2012 14:45:27 +0000 (+0200)
Subject: vfs: Move noop_backing_dev_info check from sync into writeback
X-Git-Tag: v3.6-rc1~152^2~19
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6eedc70150d55b5885800eb6664ea226dc2cb66f;p=pandora-kernel.git

vfs: Move noop_backing_dev_info check from sync into writeback

In principle, a filesystem may want to have ->sync_fs() called during sync(1)
although it does not have a bdi (i.e. s_bdi is set to noop_backing_dev_info).
Only writeback code really needs bdi set to something reasonable. So move the
checks where they are more logical.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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