Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261963AbTHZTez (ORCPT ); Tue, 26 Aug 2003 15:34:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262156AbTHZTez (ORCPT ); Tue, 26 Aug 2003 15:34:55 -0400 Received: from holomorphy.com ([66.224.33.161]:54961 "EHLO holomorphy") by vger.kernel.org with ESMTP id S261963AbTHZTew (ORCPT ); Tue, 26 Aug 2003 15:34:52 -0400 Date: Tue, 26 Aug 2003 12:35:52 -0700 From: William Lee Irwin III To: Andrew Morton Cc: mulix@mulix.org, arjanv@redhat.com, mingo@redhat.com, rusty@rustcorp.com.au, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/2] Futex non-page-pinning fix Message-ID: <20030826193552.GU4306@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Andrew Morton , mulix@mulix.org, arjanv@redhat.com, mingo@redhat.com, rusty@rustcorp.com.au, linux-kernel@vger.kernel.org References: <20030825231449.7de28ba6.akpm@osdl.org> <20030826000218.2ceaea1d.akpm@osdl.org> <1061884611.2982.4.camel@laptop.fenrus.com> <20030826080759.GK13390@actcom.co.il> <20030826103833.GX1715@holomorphy.com> <20030826034458.35c54fbf.akpm@osdl.org> <20030826104535.GR4306@holomorphy.com> <20030826102931.28ecb5aa.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030826102931.28ecb5aa.akpm@osdl.org> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1243 Lines: 32 William Lee Irwin III wrote: >> Then it sounds relatively easy to localize the search structure (if you >> care to do so), On Tue, Aug 26, 2003 at 10:29:31AM -0700, Andrew Morton wrote: > The "group of all processes which could potentially (or really do) share a > chunk of anon memory" thing sounds tricky. Not really; it's just a random data structure with very low odds of proliferating. Hugh did it once (for anobjrmap) and I rearranged and/or rewrote it to suit my preferences (I think I RCU'd the lock in it or some ridiculous nonsense on that order). William Lee Irwin III wrote: >> apart from a policy decision about what on earth to do >> about waiters on truncated futexes. On Tue, Aug 26, 2003 at 10:29:31AM -0700, Andrew Morton wrote: > erk, screwed. Well, the decision is essentially arbitrary, it just has to be made (and by definition some decision is being made regardless of what the implementation does or fails to do). -- wli - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/