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Date: Tue, 27 Mar 2018 10:12:54 +0200 (CEST)
From: Sebastian Ott <sebott@linux.vnet.ibm.com>
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To: Christoph Hellwig <hch@lst.de>,
        Jesper Nilsson <jesper.nilsson@axis.com>,
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Subject: dma_zalloc_coherent broken with
 57bf5a8963f80fb3828c46c3e3a5b2dd790e09a7
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Hi,

commit 57bf5a8963f80fb3828c46c3e3a5b2dd790e09a7 broke usage of dma
allocations specifying __GFP_ZERO by silently removing that flag.

Why should "the memory returned [] always be zeroed."?

Regards,
Sebastian