linux-kernel - Re: [PATCH v3 RESEND 3/6] bitmap: Make bitmap

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Date: Wed, 21 Feb 2024 16:30:11 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Herve Codina <herve.codina@...tlin.com>
Cc: Yury Norov <yury.norov@...il.com>,
	Vadim Fedorenko <vadim.fedorenko@...ux.dev>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org, Andrew Lunn <andrew@...n.ch>,
	Mark Brown <broonie@...nel.org>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH v3 RESEND 3/6] bitmap: Make bitmap_onto() available to
 users

On Wed, Feb 21, 2024 at 02:44:31PM +0100, Herve Codina wrote:
> On Thu, 15 Feb 2024 21:17:23 +0200
> Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:

[...]

> > > Now what's the plan ?
> > > Andy, do you want to send a v2 of this patch or may I get the patch, modify it
> > > according to reviews already present in v1 and integrate it in my current
> > > series ?  
> > 
> > I would like to do that, but under pile of different things.
> > I would try my best but if you have enough time and motivation feel free
> > to take over, address the comments and integrate in your series.
> > 
> > I dunno what to do with bitmap_onto(), perhaps in a separate patch we can
> > replace it with bitmap_scatter() (IIUC) with explanation that the former
> > 1) uses atomic ops while being non-atomic as a whole, and b) having quite
> > hard to get documentation. At least that's how I see it, I mean that I would
> > like to leave bitmap_onto() alone and address it separately.
> 
> I will take the Andy's bitmap_{scatter,gather}() patch in my next iteration.
> And use bitmap_{scatter,gather}() in my code.

Thank you and sorry that I have no time to finish that. I will be happy to help
reviewing if you Cc me.

> For bitmap_onto() replacement, nothing will be done in my next iteration as
> it is out of this series scope.

I agree on this. This will be a separate logical change related to NUMA with
explanation and replacement of all callers at once.

-- 
With Best Regards,
Andy Shevchenko