On Wed, Jun 10, 2015 at 11:32:32AM +0200, Vlastimil Babka wrote:
> The compaction migrate scanner tries to skip compound pages by their order, to
> reduce number of iterations for pages it cannot isolate. The check is only
> done
> if PageLRU() is true, which means it applies to THP pages, but
On Wed, Jun 10, 2015 at 11:32:32AM +0200, Vlastimil Babka wrote:
The compaction migrate scanner tries to skip compound pages by their order, to
reduce number of iterations for pages it cannot isolate. The check is only
done
if PageLRU() is true, which means it applies to THP pages, but not
On 06/16/2015 07:44 AM, Joonsoo Kim wrote:
> On Wed, Jun 10, 2015 at 11:32:32AM +0200, Vlastimil Babka wrote:
[...]
>> @@ -723,39 +725,35 @@ isolate_migratepages_block(struct compact_control *cc,
>> unsigned long low_pfn,
>> * It's possible to migrate LRU pages and balloon pages
On 06/16/2015 07:44 AM, Joonsoo Kim wrote:
On Wed, Jun 10, 2015 at 11:32:32AM +0200, Vlastimil Babka wrote:
[...]
@@ -723,39 +725,35 @@ isolate_migratepages_block(struct compact_control *cc,
unsigned long low_pfn,
* It's possible to migrate LRU pages and balloon pages
On Wed, Jun 10, 2015 at 11:32:32AM +0200, Vlastimil Babka wrote:
> The compaction migrate scanner tries to skip compound pages by their order, to
> reduce number of iterations for pages it cannot isolate. The check is only
> done
> if PageLRU() is true, which means it applies to THP pages, but
On Wed, Jun 10, 2015 at 11:32:32AM +0200, Vlastimil Babka wrote:
The compaction migrate scanner tries to skip compound pages by their order, to
reduce number of iterations for pages it cannot isolate. The check is only
done
if PageLRU() is true, which means it applies to THP pages, but not
On Wed, Jun 10 2015, Vlastimil Babka wrote:
> The compaction migrate scanner tries to skip compound pages by their order, to
> reduce number of iterations for pages it cannot isolate. The check is only
> done
> if PageLRU() is true, which means it applies to THP pages, but not e.g.
> hugetlbfs
On Wed, Jun 10 2015, Vlastimil Babka wrote:
The compaction migrate scanner tries to skip compound pages by their order, to
reduce number of iterations for pages it cannot isolate. The check is only
done
if PageLRU() is true, which means it applies to THP pages, but not e.g.
hugetlbfs pages
The compaction migrate scanner tries to skip compound pages by their order, to
reduce number of iterations for pages it cannot isolate. The check is only done
if PageLRU() is true, which means it applies to THP pages, but not e.g.
hugetlbfs pages or any other non-LRU compound pages, which we have
The compaction migrate scanner tries to skip compound pages by their order, to
reduce number of iterations for pages it cannot isolate. The check is only done
if PageLRU() is true, which means it applies to THP pages, but not e.g.
hugetlbfs pages or any other non-LRU compound pages, which we have
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