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| author | Wu Fengguang <fengguang.wu@intel.com> | 2011-12-04 03:26:01 (GMT) |
|---|---|---|
| committer | Wu Fengguang <fengguang.wu@intel.com> | 2011-12-18 06:20:31 (GMT) |
| commit | 82791940545be38810dfd5e03ee701e749f04aab (patch) | |
| tree | 427e4b1f535dfa483de6b71d1f59c13fd07a0ff9 /Documentation/rt-mutex-design.txt | |
| parent | 5b9b357435a51ff14835c06d8b00765a4c68f313 (diff) | |
| download | linux-fsl-qoriq-82791940545be38810dfd5e03ee701e749f04aab.tar.xz | |
writeback: do strict bdi dirty_exceeded
This helps to reduce dirty throttling polls and hence CPU overheads.
bdi->dirty_exceeded typically only helps when suddenly starting 100+
dd's on a disk, in which case the dd's may need to poll
balance_dirty_pages() earlier than tsk->nr_dirtied_pause.
CC: Jan Kara <jack@suse.cz>
CC: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Diffstat (limited to 'Documentation/rt-mutex-design.txt')
0 files changed, 0 insertions, 0 deletions