Messages in this thread | | | Date | Tue, 18 Aug 2009 15:57:00 -0700 (PDT) | From | Vincent Li <> | Subject | Re: [PATCH 1/3] page-allocator: Split per-cpu list into one-list-per-migrate-type |
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On Tue, 18 Aug 2009, Mel Gorman wrote:
> + /* > + * We only track unreclaimable, reclaimable and movable on pcp lists. ^^^^^^^^^^^^^ Is it unmovable? I don't see unreclaimable migrate type on pcp lists. Just ask to make sure I undsterstand the comment right.
> + * Free ISOLATE pages back to the allocator because they are being > + * offlined but treat RESERVE as movable pages so we can get those > + * areas back if necessary. Otherwise, we may have to free > + * excessively into the page allocator > + */ > + if (migratetype >= MIGRATE_PCPTYPES) { > + if (unlikely(migratetype == MIGRATE_ISOLATE)) { > + free_one_page(zone, page, 0, migratetype); > + goto out; > + } > + migratetype = MIGRATE_MOVABLE; > + } > +
Vincent Li Biomedical Research Center University of British Columbia
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