Re: [PATCH] mm,vmscan: Use accurate values for zone_reclaimable() checks

From: Christoph Lameter
Date: Thu Nov 05 2015 - 12:45:50 EST

On Thu, 5 Nov 2015, Tetsuo Handa wrote:

> memory allocation. By allowing workqueue items to be processed (by using
> short sleep), some task might release memory when workqueue item is
> processed.
> Therefore, not only to keep vmstat counters up to date, but also for
> avoid wasting CPU cycles, I prefer a short sleep.

Sorry but we need work queue processing for vmstat counters that is
independent of other requests submitted that may block. Adding points
where we sleep / schedule everywhere to do this is not the right approach.

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