From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kara Subject: [PATCH 0/2 RFC v3] Livelock avoidance for data integrity writeback Date: Fri, 4 Jun 2010 20:47:09 +0200 Message-ID: <1275677231-15662-1-git-send-email-jack@suse.cz> Cc: Andrew Morton , npiggin@suse.de, david@fromorbit.com, linux-mm@kvack.org To: linux-fsdevel@vger.kernel.org Return-path: Received: from cantor.suse.de ([195.135.220.2]:37397 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751239Ab0FDSrs (ORCPT ); Fri, 4 Jun 2010 14:47:48 -0400 Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Hi, I've revived my patches to implement livelock avoidance for data integrity writes. Due to some concerns whether tagging of pages before writeout cannot be too costly to use for WB_SYNC_NONE mode (where we stop after nr_to_write pages) I've changed the patch to use page tagging only in WB_SYNC_ALL mode where we are sure that we write out all the tagged pages. Later, we can think about using tagging for livelock avoidance for WB_SYNC_NONE mode as well... As always comments are welcome. Honza PS: I'm sorry for sending this twice. I've screwed up the list address in the first posting.