Re: [PATCH 0.14] oom detection rework v6
From: Vlastimil Babka
Date: Tue May 10 2016 - 03:09:47 EST
On 05/10/2016 08:41 AM, Joonsoo Kim wrote:
You applied band-aid for CONFIG_COMPACTION and fixed some reported
problem but it is also fragile. Assume almost pageblock's skipbit are
set. In this case, compaction easily returns COMPACT_COMPLETE and your
logic will stop retry. Compaction isn't designed to report accurate
fragmentation state of the system so depending on it's return value
for OOM is fragile.
Guess I'll just post a RFC now, even though it's not much tested...