Re: [PATCH 0/3] OOM detection rework v4
From: Hillf Danton
Date: Fri Feb 26 2016 - 02:55:28 EST
> It didn't really help, I'm afraid: it reduces the actual number of OOM
> kills which occur before the job is terminated, but doesn't stop the
> job from being terminated very soon.
> I also tried Hillf's patch (separately) too, but as you expected,
> it didn't seem to make any difference.
Perhaps non-costly means NOFAIL as shown by folding the two
patches into one. Can it make any sense?
--- a/mm/page_alloc.c Thu Feb 25 15:43:18 2016
+++ b/mm/page_alloc.c Fri Feb 26 15:18:55 2016
@@ -3113,6 +3113,8 @@ should_reclaim_retry(gfp_t gfp_mask, uns
struct zone *zone;
struct zoneref *z;
+ if (order <= PAGE_ALLOC_COSTLY_ORDER)
+ return true;
* Make sure we converge to OOM if we cannot make any progress
* several times in the row.