linux-kernel - Re: Linux 5.16-rc1

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Date:   Thu, 18 Nov 2021 15:08:26 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Anton Altaparmakov <anton@...era.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "linux-ntfs-dev@...ts.sourceforge.net" 
        <linux-ntfs-dev@...ts.sourceforge.net>
Subject: Re: Linux 5.16-rc1

On Thu, Nov 18, 2021 at 02:34:51PM -0800, Linus Torvalds wrote:
> On Thu, Nov 18, 2021 at 1:23 PM Guenter Roeck <linux@...ck-us.net> wrote:
> >
> > Like this ?
> 
> Ugh. Yes. Like that.
> 
> But now I have to go dig my eyes out with a rusty spoon and try to
> forget I ever saw that thing.
> 
> Because a thing of beauty it ain't.
> 
Hah.

> I would still hope somebody comes up with something prettier.
> 

It doesn't really have to be that fancy, but I suspect we'll end up
with something along that line. Kconfig doesn't support arithmetik,
so

config PAGE_SIZE
	int
	default 1 << PAGE_SHIFT

doesn't work, requiring the complex defaults.

Also,

	depends on !PAGE_SIZE || PAGE_SIZE < xxx

doesn't work either, making something like HAVE_PAGE_SIZE mandatory
unless PAGE_SIZE is made available for all architectures, which seems
excessive.

Of course,
	depends on !PPC
would be the simple solution.

Guenter