From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Subject: tip/x86/dma fix for arc and s390 (at least)
Date: Wed, 28 Mar 2018 15:35:34 +0200
Message-ID: <20180328133535.17302-1-hch@lst.de>
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Hi all,

this restores previous __GFP_ZERO passthrough behavior for now as arc and
s390 rely on it.  Needs more work to sort out the API mess in the long run.