From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932379AbVHKMSc (ORCPT ); Thu, 11 Aug 2005 08:18:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932380AbVHKMSb (ORCPT ); Thu, 11 Aug 2005 08:18:31 -0400 Received: from smtp209.mail.sc5.yahoo.com ([216.136.130.117]:56159 "HELO smtp209.mail.sc5.yahoo.com") by vger.kernel.org with SMTP id S932379AbVHKMSb (ORCPT ); Thu, 11 Aug 2005 08:18:31 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com.au; h=Received:Message-ID:Date:From:User-Agent:X-Accept-Language:MIME-Version:To:Subject:Content-Type:Content-Transfer-Encoding; b=gfBzIdul3vKAuFiac6HRxXKEDPXfqoOhHIWndfIkljrKzM5QVxJ5l0pr8YVay6dVoFpHjxv6J0+OygsrICknczVY6LSzqQTWJBwVmbk3DZwBro2pgwYf8j76AnqFysxg4w+dwqS8IYXeP3TWd8pq2R2enft+Uqu3AjKLLHPVYlA= ; Message-ID: <42FB4201.7080304@yahoo.com.au> Date: Thu, 11 Aug 2005 22:18:09 +1000 From: Nick Piggin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050513 Debian/1.7.8-1 X-Accept-Language: en MIME-Version: 1.0 To: Paul McKenney , Dipankar Sarma , Ingo Molnar , linux-kernel Subject: [patch 0/7] lockless pagecache 2 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This is my second attempt at a lockless pagecache. Patches are against 2.6.13-rc6, and have had reasonable stressing (albeit on small SMPs). Main changes since last seen: * Code clarity and commenting improvement. * Fix race where multiple concurrent failed speculative reference takers could be confused into thinking a free page wasn't free, due to the elevated refcounts. * Convert radix tree node freeing over to RCU. I completely missed this problem in my first attempt. (My first real RCU attempt - completely wrong?). * page_cache_get_speculative previously used only preempt_ disable to stop the current CPU from entering the page allocator. Needs to turn off interrupts too. Paul picked this bug up without seeing the code, just a vague description of what I was trying to do. All I picked up was my jaw from the ground ;) -- SUSE Labs, Novell Inc. Send instant messages to your online friends http://au.messenger.yahoo.com