pages are MIGRATE_MOVABLE initially, and fallback to other types. If the
pages are freed, I wonder why not move them back to MIGRATE_MOVABLE.
This, for example, can help memory remove.
Thanks,
Shaohua
Index: linux/mm/page_alloc.c
===================================================================
--- linux.orig/mm/page_alloc.c 2007-12-13 11:44:36.000000000 +0800
+++ linux/mm/page_alloc.c 2007-12-13 12:04:59.000000000 +0800
@@ -386,6 +386,9 @@ static inline int page_is_buddy(struct p
return 0;
}
+int move_freepages(struct zone *zone,
+ struct page *start_page, struct page *end_page,
+ int migratetype);
/*
* Freeing function for a buddy system allocator.
*
@@ -446,6 +449,17 @@ static inline void __free_one_page(struc
list_add(&page->lru,
&zone->free_area[order].free_list[migratetype]);
zone->free_area[order].nr_free++;
+
+ if (order >= pageblock_order && migratetype != MIGRATE_MOVABLE) {
+ struct page *tmp = page;
+
+ move_freepages(zone, page, page + (1 << order) - 1, MIGRATE_MOVABLE);
+
+ while (tmp < page + (1 << order)) {
+ set_pageblock_migratetype(tmp, MIGRATE_MOVABLE);
+ tmp += pageblock_nr_pages;
+ }
+ }
}
static inline int free_pages_check(struct page *page)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
