On 05/13/2016 03:09 PM, Michal Hocko wrote:
>@@ -1564,14 +1564,11 @@ static enum compact_result compact_zone(struct zone
*zone, struct compact_contro
>trace_mm_compaction_end(start_pfn, cc->migrate_pfn,
>cc->free_pfn, end_pfn, sync, ret);
>
>- if (ret == COMPACT
On Tue 10-05-16 09:35:58, Vlastimil Babka wrote:
> Async compaction detects contention either due to failing trylock on
> zone->lock
> or lru_lock, or by need_resched(). Since 1f9efdef4f3f ("mm, compaction:
> khugepaged should not give up due to need_resched()") the code got quite
> complicated to
Async compaction detects contention either due to failing trylock on zone->lock
or lru_lock, or by need_resched(). Since 1f9efdef4f3f ("mm, compaction:
khugepaged should not give up due to need_resched()") the code got quite
complicated to distinguish these two up to the __alloc_pages_slowpath() le
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