linux-kernel - Re: Bogus struct page layout on 32-bit

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Message-ID: <20210410155449.GI1463@shell.armlinux.org.uk>
Date:   Sat, 10 Apr 2021 16:54:49 +0100
From:   Russell King - ARM Linux admin <linux@...linux.org.uk>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        kernel test robot <lkp@...el.com>,
        Linux-MM <linux-mm@...ck.org>, kbuild-all@...ts.01.org,
        clang-built-linux@...glegroups.com,
        open list <linux-kernel@...r.kernel.org>,
        linux-fsdevel@...r.kernel.org,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev@...ts.ozlabs.org,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "David S. Miller" <davem@...emloft.net>,
        Ivan Khoronzhuk <ivan.khoronzhuk@...aro.org>,
        Matteo Croce <mcroce@...ux.microsoft.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Grygorii Strashko <grygorii.strashko@...com>
Subject: Re: Bogus struct page layout on 32-bit

On Sat, Apr 10, 2021 at 03:06:52PM +0100, Matthew Wilcox wrote:
> How about moving the flags into the union?  A bit messy, but we don't
> have to play games with __packed__.

Yes, that is probably the better solution, avoiding the games to try
and get the union appropriately placed on 32-bit systems.

-- 
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