linux-kernel - Re: [PATCH v2 2/5] sched, numa: Document usages of mm->numa_scan

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Message-ID: <5540EC36.8050202@redhat.com>
Date:	Wed, 29 Apr 2015 10:35:34 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Jason Low <jason.low2@...com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>
CC:	linux-kernel@...r.kernel.org,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Mel Gorman <mgorman@...e.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	Preeti U Murthy <preeti@...ux.vnet.ibm.com>,
	Mike Galbraith <umgwanakikbuti@...il.com>,
	Davidlohr Bueso <dave@...olabs.net>,
	Waiman Long <Waiman.Long@...com>,
	Aswin Chandramouleeswaran <aswin@...com>,
	Scott J Norton <scott.norton@...com>
Subject: Re: [PATCH v2 2/5] sched, numa: Document usages of mm->numa_scan_seq

On 04/28/2015 04:00 PM, Jason Low wrote:
> The p->mm->numa_scan_seq is accessed using READ_ONCE/WRITE_ONCE
> and modified without exclusive access. It is not clear why it is
> accessed this way. This patch provides some documentation on that.
>
> Signed-off-by: Jason Low <jason.low2@...com>

Acked-by: Rik van Riel <riel@...hat.com>

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