Re: [PATCH v2 5/9] writeback: introduce the pageout work

From: Fengguang Wu
Date: Thu Mar 01 2012 - 08:40:31 EST


> However the other type of works, if ever they come, can still block us
> for long time. Will need a proper way to guarantee fairness.

The simplistic way around this may be to refuse to queue new pageout
works when found other type of works in the queue. Then vmscan will
fall back to pageout(). It's rare condition anyway and hardly deserves
a comprehensive fairness scheme.

Thanks,
Fengguang
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