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mm: balloon: use general non-lru movable page feature

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Now, VM has a feature to migrate non-lru movable pages so balloon
doesn't need custom migration hooks in migrate.c and compaction.c.

Instead, this patch implements the page->mapping->a_ops->
{isolate|migrate|putback} functions.

With that, we could remove hooks for ballooning in general migration
functions and make balloon compaction simple.

[[email protected]: compaction.h requires that the includer first include node.h]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Gioh Kim <[email protected]>
Signed-off-by: Minchan Kim <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Cc: Rafael Aquini <[email protected]>
Cc: Konstantin Khlebnikov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Minchan Kim 2016-07-26 15:23:09 -07:00 • committed by Linus Torvalds
commit b1123ea6d3
7 changed files with 86 additions and 145 deletions
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2
mm/vmscan.c
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@ -1254,7 +1254,7 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone,
list_for_each_entry_safe(page, next, page_list, lru) {
if (page_is_file_cache(page) && !PageDirty(page) &&
!isolated_balloon_page(page)) {
!__PageMovable(page)) {
ClearPageActive(page);
list_move(&page->lru, &clean_pages);
}