Re: [PATCH 8/8] vmscan: Kick flusher threads to clean pages when reclaim is encountering dirty pages

Wu Fengguang
2010-07-27T14:34:50Z

> If you plan to keep wakeup_flusher_threads(), a simpler form may be
> sufficient, eg.
>
> laptop_mode ? 0 : (nr_dirty * 16)

This number is not sensitive because the writeback code may well round
it up to some more IO efficient value (currently 4MB). AFAIK the
nr_pages parameters passed by all existing flusher callers are some
rule-of-thumb value, and far from being an exact number.

Thanks,
Fengguang