linux-kernel - Re: [RFC][PATCH 0/7] locking/rwsem: Convert rwsem count to atomic_long

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Date:	Mon, 16 May 2016 18:12:25 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Jason Low <jason.low2@....com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Richard Henderson <rth@...ddle.net>,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>,
	Matt Turner <mattst88@...il.com>,
	Tony Luck <tony.luck@...el.com>,
	Fenghua Yu <fenghua.yu@...el.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Terry Rudd <terry.rudd@....com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arnd Bergmann <arnd@...db.de>,
	Christoph Lameter <cl@...ux.com>,
	Davidlohr Bueso <dave@...olabs.net>,
	Waiman Long <Waiman.Long@....com>,
	Tim Chen <tim.c.chen@...ux.intel.com>,
	Peter Hurley <peter@...leysoftware.com>,
	Jason Low <jason.low2@...com>
Subject: Re: [RFC][PATCH 0/7] locking/rwsem: Convert rwsem count to atomic_long_t

On Mon, May 16, 2016 at 5:37 PM, Jason Low <jason.low2@....com> wrote:
>
> This rest of the series converts the rwsem count variable to an atomic_long_t
> since it is used it as an atomic variable. This allows us to also remove
> the rwsem_atomic_{add,update} abstraction and reduce 100+ lines of code.

I would suggest you merge all the "remove rwsem_atomic_{add,update}"
patches into a single patch.

I don't see the advantage to splitting those up by architecture, and
it does add noise to the series.

Other than that it all looks fine to me.

                Linus