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Date:   Mon, 21 May 2018 17:30:55 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Huaisheng Ye <yehs2007@gmail.com>
Cc:     akpm@linux-foundation.org, linux-mm@kvack.org, mhocko@suse.com,
        willy@infradead.org, vbabka@suse.cz, mgorman@techsingularity.net,
        kstewart@linuxfoundation.org, alexander.levin@verizon.com,
        gregkh@linuxfoundation.org, colyli@suse.de, chengnt@lenovo.com,
        hehy1@lenovo.com, linux-kernel@vger.kernel.org,
        iommu@lists.linux-foundation.org, xen-devel@lists.xenproject.org,
        linux-btrfs@vger.kernel.org, Huaisheng Ye <yehs1@lenovo.com>,
        Christoph Hellwig <hch@lst.de>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Robin Murphy <robin.murphy@arm.com>
Subject: Re: [RFC PATCH v2 05/12] include/linux/dma-mapping: update usage
        of address zone modifiers
Message-ID: <20180521153055.GA18588@lst.de>
References: <1526916033-4877-1-git-send-email-yehs2007@gmail.com> <1526916033-4877-6-git-send-email-yehs2007@gmail.com>
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On Mon, May 21, 2018 at 11:20:26PM +0800, Huaisheng Ye wrote:
> From: Huaisheng Ye <yehs1@lenovo.com>
> 
> Use __GFP_ZONE_MASK to replace (__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32).
> 
> ___GFP_DMA, ___GFP_HIGHMEM and ___GFP_DMA32 have been deleted from GFP
> bitmasks, the bottom three bits of GFP mask is reserved for storing
> encoded zone number.
> __GFP_DMA, __GFP_HIGHMEM and __GFP_DMA32 should not be operated with
>each others by OR.

You have to include me for the whole series, otherwise I have absolutely
no way to properly review your patch.