XFS request for 4.4: fix log recovery with quotas

["Holger Hoffstätte" <holger@applied-asynchrony.com>]

There's a problem with XFS quota handling and log replay fixed by
commit 7d6a13f02356 "xfs: handle dquot buffer readahead in log
recovery correctly", as reported in [1].

It was sent to -stable previously but didn't compile, which is
probably why it was dropped. As it turns out this is easy to fix
with a preceding (low-risk) patch.

So please add the following two commits:

233135b7 xfs: print name of verifier if it fails
7d6a13f0 xfs: handle dquot buffer readahead in log recovery correctly

Dave Chinner ack'ed this (while also suggesting an alternative way
in [2]) but IMHO just adding both patches keeps things simple.

thanks!
Holger

[1] http://oss.sgi.com/pipermail/xfs/2016-June/049186.html
[2] http://oss.sgi.com/pipermail/xfs/2016-June/049197.html