linux-kernel - Re: [PATCH 2/3] rcu: Create rcu

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Message-ID: <20131005173136.GC18191@redhat.com>
Date:	Sat, 5 Oct 2013 19:31:36 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Mel Gorman <mgorman@...e.de>, Rik van Riel <riel@...hat.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...nel.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] rcu: Create rcu_sync infrastructure

On 10/04, Peter Zijlstra wrote:
>
> On Fri, Oct 04, 2013 at 09:06:53PM +0200, Oleg Nesterov wrote:
> > However, yes-yes-yes, I do think that we need the non-exclusive mode
> > too, at least for percpu_down_write_nonexclusive() which I think we
> > need as well.
>
> I just need to disagree with the write_nonexclusive() name; the
> construct I quite understand and could even agree with.
>
> How about something like:

I am fine either way ;)

> At which point I start to have doubts about the percpu prefix.. ;-)

Yes... and "percpu" just refers to implementation details, this is
pointless.

Oleg.

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