linux-kernel - Re: [PATCH 04/15] mm: numa: Serialise parallel get_user

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Date:	Tue, 03 Dec 2013 18:07:51 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Mel Gorman <mgorman@...e.de>
CC:	Alex Thorlton <athorlton@....com>, Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 04/15] mm: numa: Serialise parallel get_user_page against
 THP migration

On 12/03/2013 03:51 AM, Mel Gorman wrote:

> +
> +	if (page_count(page) != 2) {
> +		set_pmd_at(mm, mmun_start, pmd, orig_entry);
> +		flush_tlb_range(vma, mmun_start, mmun_end);

The mmun_start and mmun_end variables are introduced in patch 5.

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