Re: [PATCH] rbtree: remove unneeded explicit alignment in struct rb_node

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To: Arnd Bergmann <arnd@xxxxxxxx>
Subject: Re: [PATCH] rbtree: remove unneeded explicit alignment in struct rb_node
From: Davidlohr Bueso <dbueso@xxxxxxx>
Date: Thu, 05 Aug 2021 08:02:28 -0700
Cc: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx>, Michel Lespinasse <michel@xxxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Mete Polat <metepolat2000@xxxxxxxxx>, Jesper Nilsson <jesper@xxxxxx>, David Woodhouse <dwmw2@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Randy Dunlap <rdunlap@xxxxxxxxxxxxx>, kernel-janitors@xxxxxxxxxxxxxxx, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
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References: <20210805133213.700-1-lukas.bulwahn@gmail.com> <CAK8P3a3aNuxaEtAiewd+Wjc8hKtca0NrcV2kykkNC-qKT_HhzQ@mail.gmail.com>
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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 ifthat
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@xxxxxxxxxxxxxx/

Thanks,
Davidlohr

Follow-Ups:
- Re: [PATCH] rbtree: remove unneeded explicit alignment in struct rb_node
  - From: Mete Polat
- Re: [PATCH] rbtree: remove unneeded explicit alignment in struct rb_node
  - From: Peter Zijlstra

References:
- [PATCH] rbtree: remove unneeded explicit alignment in struct rb_node
  - From: Lukas Bulwahn
- Re: [PATCH] rbtree: remove unneeded explicit alignment in struct rb_node
  - From: Arnd Bergmann

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