[PATCH 0/5] IO-less dirty throttling v8

[Wu Fengguang <fengguang.wu@intel.com>]

Hi all,

The _core_ bits of the IO-less balance_dirty_pages().
Heavily simplified and re-commented to make it easier to review.

	git://git.kernel.org/pub/scm/linux/kernel/git/wfg/writeback.git dirty-throttling-v8

Only the bare minimal algorithms are presented, so you will find some rough
edges in the graphs below. But it's usable :)

	http://www.kernel.org/pub/linux/kernel/people/wfg/writeback/dirty-throttling-v8/

And an introduction to the (more complete) algorithms:

	http://www.kernel.org/pub/linux/kernel/people/wfg/writeback/slides/smooth-dirty-throttling.pdf

Questions and reviews are highly appreciated!

shortlog:

	Wu Fengguang (5):
	      writeback: account per-bdi accumulated dirtied pages
	      writeback: dirty position control
	      writeback: dirty rate control
	      writeback: per task dirty rate limit
	      writeback: IO-less balance_dirty_pages()

	The last 4 patches are one single logical change, but splitted here to
	make it easier to review the different parts of the algorithm.

diffstat:

	 include/linux/backing-dev.h      |    8 +
	 include/linux/sched.h            |    7 +
	 include/trace/events/writeback.h |   24 --
	 mm/backing-dev.c                 |    3 +
	 mm/memory_hotplug.c              |    3 -
	 mm/page-writeback.c              |  459 ++++++++++++++++++++++----------------
	 6 files changed, 290 insertions(+), 214 deletions(-)

Thanks,
Fengguang

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