2015-03-24 오전 8:16에 David Rientjes 이(가) 쓴 글:
On Sat, 21 Mar 2015, Gioh Kim wrote:
When the compaction is activated via /proc/sys/vm/compact_memory
it would better scan the whole zone.
And some platform, for instance ARM, has the start_pfn of a zone is zero.
Therefore the first try to compaction via /proc doesn't work.
It needs to force to reset compaction scanner position at first.
Signed-off-by: Gioh Kim <gioh.kim@lge.c>
That shouldn't be a valid email address.
It's my fault. I'm going to send patch again.
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
I was thinking that maybe this would be better handled as part of the
comapct_zone() logic, i.e. set cc->free_pfn and cc->migrate_pfn based on a
helper function that understands cc->order == -1 should compact the entire
zone. However, after scanning the entire zone as a result of this write,
the existing cached pfns probably don't matter anymore. So this seems
fine.
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