From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 10 Dec 2004 13:38:59 -0800 From: Andrew Morton Subject: Re: pfault V12 : correction to tasklist rss Message-Id: <20041210133859.2443a856.akpm@osdl.org> In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Hugh Dickins Cc: clameter@sgi.com, torvalds@osdl.org, benh@kernel.crashing.org, nickpiggin@yahoo.com.au, linux-mm@kvack.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org List-ID: Hugh Dickins wrote: > > > We have no real way of establishing the ownership of shared pages > > anyways. Its counted when allocated. But the page may live on afterwards > > in another process and then not be accounted for although its only user is > > the new process. > > I didn't understand that bit. We did lose some accounting accuracy when the pagetable walk and the big tasklist walks were removed. Bill would probably have more details. Given that the code as it stood was a complete showstopper, the tradeoff seemed reasonable. -- 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: aart@kvack.org