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writeback patches for 2.6.36

From:  Wu Fengguang <fengguang.wu@intel.com>
To:  Andrew Morton <akpm@linux-foundation.org>
Subject:  [PATCH 00/13] writeback patches for 2.6.36
Date:  Fri, 06 Aug 2010 00:10:51 +0800
Message-ID:  <20100805161051.501816677@intel.com>
Cc:  Wu Fengguang <fengguang.wu@intel.com>, LKML <linux-kernel@vger.kernel.org>
Archive-link:  Article

Andrew,

These are writeback patches intended for 2.6.36.

It's combined from 2 previous patchsets:

	writeback cleanups and trivial fixes <http://lkml.org/lkml/2010/7/10/153>
	writeback: try to write older pages first <http://lkml.org/lkml/2010/7/22/47>

changelog:
- removed patch "writeback: take account of NR_WRITEBACK_TEMP in balance_dirty_pages()"
- added patch "writeback: explicit low bound for vm.dirty_ratio"
- use "if (list_empty(&wb->b_io))" directly in "writeback: sync expired inodes first in background writeback"
- fix misplaced chunk for removing more_io in include/trace/events/ext4.h
- update comments in "writeback: fix queue_io() ordering"
- update comments in "writeback: add comment to the dirty limits functions"
- patch "writeback: try more writeback as long as something was written" will
  no longer livelock sync() with Jan's sync() livelock avoidance patches

	[PATCH 01/13] writeback: reduce calls to global_page_state in balance_dirty_pages()
	[PATCH 02/13] writeback: avoid unnecessary calculation of bdi dirty thresholds
	[PATCH 03/13] writeback: add comment to the dirty limits functions
	[PATCH 04/13] writeback: dont redirty tail an inode with dirty pages
	[PATCH 05/13] writeback: fix queue_io() ordering
	[PATCH 06/13] writeback: merge for_kupdate and !for_kupdate cases
	[PATCH 07/13] writeback: explicit low bound for vm.dirty_ratio
	[PATCH 08/13] writeback: pass writeback_control down to move_expired_inodes()
	[PATCH 09/13] writeback: the kupdate expire timestamp should be a moving target
	[PATCH 10/13] writeback: kill writeback_control.more_io
	[PATCH 11/13] writeback: sync expired inodes first in background writeback
	[PATCH 12/13] writeback: try more writeback as long as something was written
	[PATCH 13/13] writeback: introduce writeback_control.inodes_written

Thanks,
Fengguang

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