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Date: Wed, 25 Sep 2013 18:33:57 +0200
From: Oleg Nesterov <oleg@redhat.com>
Subject: Re: [PATCH] hotplug: Optimize {get,put}_online_cpus()
Message-ID: <20130925163357.GB17447@redhat.com>
References: <20130923175052.GA20991@redhat.com> <20130924123821.GT12926@twins.programming.kicks-ass.net> <20130924160359.GA2739@redhat.com> <20130924124341.64d57912@gandalf.local.home> <20130924170631.GB5059@redhat.com> <20130924174717.GH9093@linux.vnet.ibm.com> <20130924180005.GA7148@redhat.com> <20130924203512.GS9326@twins.programming.kicks-ass.net> <20130925151642.GA13244@redhat.com> <20130925153533.GN3081@twins.programming.kicks-ass.net>
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To: Peter Zijlstra <peterz@infradead.org>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>, Steven Rostedt <rostedt@goodmis.org>, Mel Gorman <mgorman@suse.de>, Rik van Riel <riel@redhat.com>, Srikar Dronamraju <srikar@linux.vnet.ibm.com>, Ingo Molnar <mingo@kernel.org>, Andrea Arcangeli <aarcange@redhat.com>, Johannes Weiner <hannes@cmpxchg.org>, Linux-MM <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>, Thomas Gleixner <tglx@linutronix.de>

On 09/25, Peter Zijlstra wrote:
>
> On Wed, Sep 25, 2013 at 05:16:42PM +0200, Oleg Nesterov wrote:
>
> > And in this case (I think) we do not care, we are already in the critical
> > section.
>
> I tend to agree, however paranoia..

Ah, in this case I tend to agree. better be paranoid ;)

Oleg.

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