linux-kernel - Re: [PATCH] rbtree: remove unneeded explicit alignment in struct rb

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Message-ID: <50ad4c8b848bd371b4b42959167ef03d@suse.de>
Date:   Thu, 05 Aug 2021 08:02:28 -0700
From:   Davidlohr Bueso <dbueso@...e.de>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Lukas Bulwahn <lukas.bulwahn@...il.com>,
        Michel Lespinasse <michel@...pinasse.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mete Polat <metepolat2000@...il.com>,
        Jesper Nilsson <jesper@....nu>,
        David Woodhouse <dwmw2@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        kernel-janitors@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: Re: [PATCH] rbtree: remove unneeded explicit alignment in struct
 rb_node

On 2021-08-05 07:02, Arnd Bergmann wrote:
> The revert would appear to change the alignment to 16 bits instead
> of 32 bits on m68k as well (not 8 bits as on cris), but I don't know if 
> that
> can cause problems there.

Yeah I tried this a while back and it broke m68k, so it was a no go:

https://lore.kernel.org/lkml/CAMuHMdXeZvJ0X6Ah2CpLRoQJm+YhxAWBt-rUpxoyfOLTcHp+0g@mail.gmail.com/

Thanks,
Davidlohr