From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 25 Jan 2007 22:36:17 -0800 (PST) From: Christoph Lameter Subject: Re: [RFC] Track mlock()ed pages In-Reply-To: <45B9A00C.4040701@yahoo.com.au> Message-ID: References: <45B9A00C.4040701@yahoo.com.au> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Nick Piggin Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On Fri, 26 Jan 2007, Nick Piggin wrote: > Christoph Lameter wrote: > > Add NR_MLOCK > > > > Track mlocked pages via a ZVC > > I think it is not quite right. You are tracking the number of ptes > that point to mlocked pages, which can be >= the actual number of pages. Mlocked pages are not inherited. I would expect sharing to be very rare. > Also, page_add_anon_rmap still needs to be balanced with page_remove_rmap. Hmmm.... > I can't think of an easy way to do this without per-page state. ie. > another page flag. Thats what I am trying to avoid. -- 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