Hi,
The core bits of the IO-less balance_dirty_pages().
git://git.kernel.org/pub/scm/linux/kernel/git/wfg/writeback.git dirty-throttling-v9
Changes since v8:
- a lot of renames and comment/changelog rework
- use 3rd order polynomial as the global control line (Peter)
- stabilize dirty_ratelimit by decreasing update step size on small errors
- limit per-CPU dirtied pages to avoid dirty pages run away on 1k+ tasks (Peter)
Thanks a lot to Peter and Andrea, Vivek for the careful reviews!
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:
fs/fs-writeback.c | 2
include/linux/backing-dev.h | 8
include/linux/sched.h | 7
include/linux/writeback.h | 1
include/trace/events/writeback.h | 24 -
kernel/fork.c | 3
mm/backing-dev.c | 3
mm/page-writeback.c | 544 ++++++++++++++++++++---------
8 files changed, 414 insertions(+), 178 deletions(-)
Thanks,
Fengguang
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