linux-kernel - Re: [PATCH v4 12/16] parisc: mm: Convert to GENERIC

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Date:   Thu, 16 Feb 2023 16:18:53 +0100
From:   "Arnd Bergmann" <arnd@...db.de>
To:     "Baoquan He" <bhe@...hat.com>,
        "Matthew Wilcox" <willy@...radead.org>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        "Andrew Morton" <akpm@...ux-foundation.org>,
        "Christophe Leroy" <christophe.leroy@...roup.eu>,
        "Christoph Hellwig" <hch@...radead.org>,
        "Alexander Gordeev" <agordeev@...ux.ibm.com>,
        "Kefeng Wang" <wangkefeng.wang@...wei.com>,
        "Niklas Schnelle" <schnelle@...ux.ibm.com>,
        "David Laight" <David.Laight@...lab.com>,
        "Stafford Horne" <shorne@...il.com>,
        "James E . J . Bottomley" <James.Bottomley@...senpartnership.com>,
        "Helge Deller" <deller@....de>, linux-parisc@...r.kernel.org
Subject: Re: [PATCH v4 12/16] parisc: mm: Convert to GENERIC_IOREMAP

On Thu, Feb 16, 2023, at 16:02, Baoquan He wrote:
> On 02/16/23 at 01:50pm, Matthew Wilcox wrote:
> It's not if including asm-generic/iomap.h. The ARCH_HAS_IOREMAP_xx is to
> avoid redefinition there.
>
> include/asm-generic/iomap.h:
> ----
> #ifndef ARCH_HAS_IOREMAP_WC
> #define ioremap_wc ioremap
> #endif

I'd change that to the usual '#ifndef ioremap_wc' in that case.

      Arnd