cma: decrease cc.nr_migratepages after reclaiming pagelist
reclaim_clean_pages_from_list() reclaims clean pages before migration so
cc.nr_migratepages should be updated. Currently, there is no problem but
it can be wrong if we try to use the value in future.
Signed-off-by: Minchan Kim <[email protected]>
Acked-by: Mel Gorman <[email protected]>
Cc: Michal Nazarewicz <[email protected]>
Cc: Bartlomiej Zolnierkiewicz <[email protected]>
Cc: Marek Szyprowski <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index fd86c47..bb90971 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5674,7 +5674,7 @@
unsigned long start, unsigned long end)
{
/* This function is based on compact_zone() from compaction.c. */
-
+ unsigned long nr_reclaimed;
unsigned long pfn = start;
unsigned int tries = 0;
int ret = 0;
@@ -5701,7 +5701,9 @@
break;
}
- reclaim_clean_pages_from_list(cc->zone, &cc->migratepages);
+ nr_reclaimed = reclaim_clean_pages_from_list(cc->zone,
+ &cc->migratepages);
+ cc->nr_migratepages -= nr_reclaimed;
ret = migrate_pages(&cc->migratepages,
alloc_migrate_target,
