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Date:   Mon, 29 May 2023 15:26:10 +0100
From:   Matthew Wilcox <willy@infradead.org>
To:     Kefeng Wang <wangkefeng.wang@huawei.com>
Cc:     Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, Baoquan He <bhe@redhat.com>
Subject: Re: [PATCH -next] mm: page_alloc: simplify has_managed_dma()
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On Mon, May 29, 2023 at 10:40:22PM +0800, Kefeng Wang wrote:
> The ZONE_DMA should only exists on Node 0, only check NODE_DATA(0)
> is enough, so simplify has_managed_dma() and make it inline.

That's true on x86, but is it true on all architectures?