Re: [Xen-devel] [RFC PATCH v2 05/12] include/linux/dma-mapping: update usage of address zone modifiers

[Christoph Hellwig <hch@xxxxxx>]

On Mon, May 21, 2018 at 11:20:26PM +0800, Huaisheng Ye wrote:
> From: Huaisheng Ye <yehs1@xxxxxxxxxx>
> 
> 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.

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