linux-kernel - fix two more s390/sparc gup

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Date:	Mon, 17 Oct 2011 23:32:50 +0200
From:	Andrea Arcangeli <aarcange@...hat.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Minchan Kim <minchan.kim@...il.com>,
	Michel Lespinasse <walken@...gle.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Hugh Dickins <hughd@...gle.com>,
	Johannes Weiner <jweiner@...hat.com>,
	Rik van Riel <riel@...hat.com>, Mel Gorman <mgorman@...e.de>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Shaohua Li <shaohua.li@...el.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: fix two more s390/sparc gup_fast bugs

Hi,

I just noticed return 0 was missing after rolling back *nr, that's not
ok as then gup_fast wouldn't abort and it would put pages in the wrong
offset in the array I think... This isn't related to the recent
changes, it was the same in 2.6.37. I don't think it's ok to return 1
after rolling back *nr.

These next two are incremental with the previous.
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