From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with ESMTP id 7D7746B0236 for ; Thu, 13 May 2010 12:14:21 -0400 (EDT) Date: Thu, 13 May 2010 18:14:15 +0200 From: Andi Kleen Subject: Re: [PATCH 1/7] hugetlb, rmap: add reverse mapping for hugepage Message-ID: <20100513161415.GC28226@basil.fritz.box> References: <1273737326-21211-1-git-send-email-n-horiguchi@ah.jp.nec.com> <1273737326-21211-2-git-send-email-n-horiguchi@ah.jp.nec.com> <20100513152737.GE27949@csn.ul.ie> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100513152737.GE27949@csn.ul.ie> Sender: owner-linux-mm@kvack.org To: Mel Gorman Cc: Naoya Horiguchi , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andi Kleen , Andrew Morton , Wu Fengguang List-ID: > I think what you're getting with this is the ability to unmap MAP_PRIVATE pages > from one process but if there are multiple processes, the second process could > still end up referencing the poisoned MAP_PRIVATE page. Is this accurate? Even > if it is, I guess it's still an improvement over what currently happens. The only real requirement is that all PTEs pointing to that page get replaced by poisoned PTEs. (that's essentially always "late kill" mode) -Andi -- ak@linux.intel.com -- Speaking for myself only. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org