Re: [PATCH V3 1/2] mm, vmscan: prevent kswapd livelock due to pfmemalloc-throttled process being killed

[Rik van Riel]

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On 01/05/2015 03:56 AM, Vlastimil Babka wrote:
> Charles Shirron and Paul Cassella from Cray Inc have reported
> kswapd stuck in a busy loop with nothing left to balance, but
> kswapd_try_to_sleep() failing to sleep. Their analysis found the
> cause to be a combination of several factors:

> Fixes: 5515061d22f0 ("mm: throttle direct reclaimers if PF_MEMALLOC
> reserves are low and swap is backed by network storage") 
> Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx> Signed-off-by:
> Vladimir Davydov <vdavydov@xxxxxxxxxxxxx> Cc:
> <stable@xxxxxxxxxxxxxxx>   # v3.6+ Cc: Mel Gorman
> <mgorman@xxxxxxx> Cc: Johannes Weiner <hannes@xxxxxxxxxxx> Cc:
> Michal Hocko <mhocko@xxxxxxx> Cc: Rik van Riel <riel@xxxxxxxxxx>

Acked-by: Rik van Riel <riel@xxxxxxxxxx>

- -- 
All rights reversed
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