From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jan Kara <jack@suse.cz>
Subject: [PATCH 0/2 v4] writeback: Improve busyloop prevention and inode requeueing
Date: Wed, 12 Oct 2011 22:57:21 +0200
Message-ID: <1318453043-32057-1-git-send-email-jack@suse.cz>
Cc: linux-fsdevel@vger.kernel.org,
	Christoph Hellwig <hch@infradead.org>,
	Dave Chinner <david@fromorbit.com>
To: Wu Fengguang <fengguang.wu@intel.com>
Return-path: <linux-fsdevel-owner@vger.kernel.org>
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  Hello,

  this is a fourth version of my patch series improving busyloop prevention in
writeback code and then replacing some redirty_tail() calls with requeue_io()
to avoid postponing writeback for too long.

  Changes since v3:
* Improved busyloop prevention to abort work which cannot make progress if we
are retrying for too long or if there is some other work to do.
* Increased maximum sleep time in the busy loop to avoid eating CPU power
unnecessarily.
* Removed wbc->pages_skipped check

  Thanks to Fengguang for review, testing and good suggestions.

								Honza