linux-kernel - Re: [PATCH 1/11] ksm: allow trees per NUMA node

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Message-Id: <20130128150854.6813b1ca.akpm@linux-foundation.org>
Date:	Mon, 28 Jan 2013 15:08:54 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Hugh Dickins <hughd@...gle.com>
Cc:	Petr Holasek <pholasek@...hat.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Izik Eidus <izik.eidus@...ellosystems.com>,
	Rik van Riel <riel@...hat.com>,
	David Rientjes <rientjes@...gle.com>,
	Anton Arapov <anton@...hat.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [PATCH 1/11] ksm: allow trees per NUMA node

On Fri, 25 Jan 2013 17:54:53 -0800 (PST)
Hugh Dickins <hughd@...gle.com> wrote:

> +/* Zeroed when merging across nodes is not allowed */
> +static unsigned int ksm_merge_across_nodes = 1;

I spose this should be __read_mostly.  If __read_mostly is not really a
synonym for __make_write_often_storage_slower.  I continue to harbor
fear, uncertainty and doubt about this...


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