[PATCH 01/14] mm, compaction: Shrink compact_control

[Mel Gorman]

The isolate and migrate scanners should never isolate more than a pageblock
of pages so unsigned int is sufficient saving 8 bytes on a 64-bit build.

Signed-off-by: Mel Gorman <mgor...@techsingularity.net>
---
 mm/internal.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/internal.h b/mm/internal.h
index 536bc2a839b9..5564841fce36 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -185,8 +185,8 @@ struct compact_control {
        struct list_head freepages;     /* List of free pages to migrate to */
        struct list_head migratepages;  /* List of pages being migrated */
        struct zone *zone;
-       unsigned long nr_freepages;     /* Number of isolated free pages */
-       unsigned long nr_migratepages;  /* Number of pages to migrate */
+       unsigned int nr_freepages;      /* Number of isolated free pages */
+       unsigned int nr_migratepages;   /* Number of pages to migrate */
        unsigned long total_migrate_scanned;
        unsigned long total_free_scanned;
        unsigned long free_pfn;         /* isolate_freepages search base */
-- 
2.16.4