Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757212AbYAOMvm (ORCPT ); Tue, 15 Jan 2008 07:51:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754541AbYAOMsc (ORCPT ); Tue, 15 Jan 2008 07:48:32 -0500 Received: from smtp.ustc.edu.cn ([202.38.64.16]:48018 "HELO ustc.edu.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with SMTP id S1754988AbYAOMsI (ORCPT ); Tue, 15 Jan 2008 07:48:08 -0500 Message-ID: <400401292.24795@ustc.edu.cn> X-EYOUMAIL-SMTPAUTH: wfg@mail.ustc.edu.cn Message-Id: <20080115123637.518924046@mail.ustc.edu.cn> User-Agent: quilt/0.46-1 Date: Tue, 15 Jan 2008 20:36:37 +0800 From: Fengguang Wu To: Andrew Morton Cc: Michael Rubin Cc: Peter Zijlstra Cc: linux-fsdevel@vger.kernel.org Cc: linux-kernel@vger.kernel.org Subject: [PATCH 00/13] writeback bug fixes and simplifications take 2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2479 Lines: 60 Andrew, This patchset mainly polishes the writeback queuing policies. The main goals are: (1) small files should not be starved by big dirty files (2) sync as fast as possible for not-blocked inodes/pages - don't leave them out; no congestion_wait() in between them (3) avoid busy iowait for blocked inodes - retry them in the next go of s_io(maybe at the next wakeup of pdflush) The role of the queues: s_dirty: park for dirtied_when expiration s_io: park for io submission s_more_io: for big dirty inodes, they will be retried in this run of pdflush (it ensures fairness between small/large files) s_more_io_wait: for blocked inodes, they will be picked up in next run of s_io This patchset is in better shape, but still not ready for merge. It begins with: [PATCH 01/13] writeback: revert 2e6883bdf49abd0e7f0d9b6297fc3be7ebb2250b [PATCH 02/13] writeback: clear PAGECACHE_TAG_DIRTY for truncated page in block_write_full_page() Introduces more_io/more_io_wait based policies: [PATCH 03/13] writeback: introduce writeback_control.more_io [PATCH 04/13] writeback: introduce super_block.s_more_io_wait [PATCH 05/13] writeback: merge duplicate code into writeback_some_pages() [PATCH 06/13] writeback: defer writeback on not-all-pages-written [PATCH 07/13] writeback: defer writeback on locked inode [PATCH 08/13] writeback: defer writeback on locked buffers [PATCH 09/13] writeback: requeue_io() on redirtied inode And finishes with some code cleanups: [PATCH 10/13] writeback: introduce queue_dirty() [PATCH 11/13] writeback: queue_dirty() on memory-backed bdi [PATCH 12/13] writeback: remove redirty_tail() [PATCH 13/13] writeback: cleanup __sync_single_inode() Diffstat: fs/buffer.c | 2 fs/fs-writeback.c | 121 +++++++++++++++--------------------------- fs/super.c | 1 include/linux/fs.h | 1 mm/page-writeback.c | 46 +++++++-------- 5 files changed, 72 insertions(+), 99 deletions(-) Regards, Fengguang Wu -- -- 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/