From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with SMTP id 656766B005A for ; Tue, 7 Jul 2009 13:26:14 -0400 (EDT) Message-ID: <4A5385AD.9000800@redhat.com> Date: Tue, 07 Jul 2009 13:28:13 -0400 From: Rik van Riel MIME-Version: 1.0 Subject: Re: [RFC PATCH 0/4] (Take 2): transcendent memory ("tmem") for Linux References: <482d25af-01eb-4c2a-9b1d-bdaf4020ce88@default> In-Reply-To: <482d25af-01eb-4c2a-9b1d-bdaf4020ce88@default> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Dan Magenheimer Cc: linux-kernel@vger.kernel.org, npiggin@suse.de, akpm@osdl.org, jeremy@goop.org, xen-devel@lists.xensource.com, tmem-devel@oss.oracle.com, alan@lxorguk.ukuu.org.uk, linux-mm@kvack.org, kurt.hackel@oracle.com, Rusty Russell , dave.mccracken@oracle.com, Marcelo Tosatti , sunil.mushran@oracle.com, Avi Kivity , Schwidefsky , chris.mason@oracle.com, Balbir Singh List-ID: Dan Magenheimer wrote: > "Preswap" IS persistent, but for various reasons may not always be > available for use, again due to factors that may not be visible to the > kernel (but, briefly, if the kernel is being "good" and has shared its > resources nicely, then it will be able to use preswap, else it will not). > Once a page is put, a get on the page will always succeed. What happens when all of the free memory on a system has been consumed by preswap by a few guests? Will the system be unable to start another guest, or is there some way to free the preswap memory? -- 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