]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
mm: dirty balancing for tasks
authorPeter Zijlstra <a.p.zijlstra@chello.nl>
Wed, 17 Oct 2007 06:25:50 +0000 (23:25 -0700)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Wed, 17 Oct 2007 15:42:45 +0000 (08:42 -0700)
commit3e26c149c358529b1605f8959341d34bc4b880a3
tree9d173b1753b86bcf03a8591e2509e3162234447c
parent04fbfdc14e5f48463820d6b9807daa5e9c92c51f
mm: dirty balancing for tasks

Based on ideas of Andrew:
  http://marc.info/?l=linux-kernel&m=102912915020543&w=2

Scale the bdi dirty limit inversly with the tasks dirty rate.
This makes heavy writers have a lower dirty limit than the occasional writer.

Andrea proposed something similar:
  http://lwn.net/Articles/152277/

The main disadvantage to his patch is that he uses an unrelated quantity to
measure time, which leaves him with a workload dependant tunable. Other than
that the two approaches appear quite similar.

[akpm@linux-foundation.org: fix warning]
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/linux/init_task.h
include/linux/sched.h
kernel/fork.c
mm/page-writeback.c