linux-kernel - Re: [PATCH v1 0/5] bitmap: get rid of bitmap_remap() and bitmap

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Date:   Tue, 26 Sep 2023 14:16:08 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        Yury Norov <yury.norov@...il.com>, linux-gpio@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Shubhrajyoti Datta <shubhrajyoti.datta@....com>,
        Srinivas Neeli <srinivas.neeli@....com>,
        Michal Simek <michal.simek@....com>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Marek Behún <kabel@...nel.org>
Subject: Re: [PATCH v1 0/5] bitmap: get rid of bitmap_remap() and
 bitmap_biremap() uses

On Tue, Sep 26, 2023 at 10:52:05AM +0200, Linus Walleij wrote:
> On Tue, Sep 26, 2023 at 7:20 AM Andy Shevchenko
> <andriy.shevchenko@...ux.intel.com> wrote:
> 
> > As Rasmus suggested [1], the bit remapping APIs should be local to NUMA.
> > However, they are being in use outside of that for a while. To make
> > above happen, introduces simplified APIs that can be used otherwise.
> >
> > It seems we might have yet another user of the above mentioned APIs.
> >
> > The last patch has not been tested anyhow (except compilation, so
> > all testing and comments are welcome).
> >
> > The idea is to get an immutable tag (via my tree) that can be pulled
> > by bitmap and GPIO trees on the need (while usually I send PR to
> > the GPIO subsystem).
> >
> > Link: https://lore.kernel.org/all/20230815235934.47782-1-yury.norov@gmail.com/ [1]
> 
> I don't understand the bitmap changes very well,

Me neither... Oops (it was a joke :-)

> but the resulting
> changes to cdev look very nice clearly making that code more readable
> and maintainable,

While the above is a joke it took quite a time to get into the logic.
Hence this patch. TBH I'm in doubt, that's why asking for careful testing
and reviews.

> so FWIW:
> Acked-by: Linus Walleij <linus.walleij@...aro.org>

Thank you!

-- 
With Best Regards,
Andy Shevchenko