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Message-ID: <Y++Bypsg9YCmUEcd@MiWiFi-R3L-srv>
Date:   Fri, 17 Feb 2023 21:31:54 +0800
From:   Baoquan He <bhe@...hat.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Matthew Wilcox <willy@...radead.org>, 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 02/16/23 at 04:18pm, Arnd Bergmann wrote:
> 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.

Not sure if I got you. Kill all ARCH_HAS_IOREMAP_xxx in kernel? If yes,
sounds like a good idea.

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