dma-mapping: clear harmful GFP_* flags in common code

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To: "stable@xxxxxxxxxxxxxxx" <stable@xxxxxxxxxxxxxxx>
Subject: dma-mapping: clear harmful GFP_* flags in common code
From: Alexey Brodkin <Alexey.Brodkin@xxxxxxxxxxxx>
Date: Mon, 9 Apr 2018 10:52:09 +0000
Accept-language: en-US, ru-RU
Cc: "hch@xxxxxx" <hch@xxxxxx>, "linux-arch@xxxxxxxxxxxxxxx" <linux-arch@xxxxxxxxxxxxxxx>, "sebott@xxxxxxxxxxxxxxxxxx" <sebott@xxxxxxxxxxxxxxxxxx>, "x86@xxxxxxxxxx" <x86@xxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx" <iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx>, "linux-snps-arc@xxxxxxxxxxxxxxxxxxx" <linux-snps-arc@xxxxxxxxxxxxxxxxxxx>
In-reply-to: <1522249966.2593.14.camel@synopsys.com>
References: <20180328133535.17302-1-hch@lst.de> <20180328133535.17302-2-hch@lst.de> <1522249966.2593.14.camel@synopsys.com>
Thread-index: AQHTz/DO6ni8/KLs20uKNIF21aVGhg==
Thread-topic: dma-mapping: clear harmful GFP_* flags in common code

Hello,

May we have
e89f5b370153 ("dma-mapping: Don't clear GFP_ZERO in dma_alloc_attrs")
back-ported to 4.16 kernel as it fixes:

57bf5a8 ("dma-mapping: clear harmful GFP_* flags in common code").

For more info about introduced problem see this thread:
http://lists.infradead.org/pipermail/linux-snps-arc/2018-March/003652.html

-Alexey

References:
- Re: [PATCH] dma-mapping: don't clear GFP_ZERO in dma_alloc_attrs
  - From: Evgeniy Didin

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