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| author |   Wu Fengguang <fengguang.wu@intel.com> | 2011-12-03 21:26:01 -0600 |
|---|---|---|
| committer | Wu Fengguang <fengguang.wu@intel.com> | 2011-12-18 14:20:31 +0800 |
| commit | 82791940545be38810dfd5e03ee701e749f04aab (patch) | |
| tree | 427e4b1f535dfa483de6b71d1f59c13fd07a0ff9 /lib/dma-debug.c | |
| parent | writeback: avoid tiny dirty poll intervals (diff) | |
| download | linux-rng-82791940545be38810dfd5e03ee701e749f04aab.tar.xz linux-rng-82791940545be38810dfd5e03ee701e749f04aab.zip | |
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 'lib/dma-debug.c')
0 files changed, 0 insertions, 0 deletions