mm: do_migrate_range: exit loop if not_managed is true

If not_managed is true all pages will be putback to lru, so break the loop earlier to skip other pages isolate. Signed-off-by: Bob Liu <[email protected]> Acked-by: KAMEZAWA Hiroyuki <[email protected]> Acked-by: Wu Fengguang <[email protected]> Cc: KOSAKI Motohiro <[email protected]> Cc: Mel Gorman <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
kawasaki · Oct 26, 2010 · 809c444 · 809c444
1 parent f6a3607
commit 809c444
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
@@ -696,15 +696,17 @@ do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
 					    page_is_file_cache(page));
 
 		} else {
-			/* Becasue we don't have big zone->lock. we should
-			   check this again here. */
-			if (page_count(page))
-				not_managed++;
 #ifdef CONFIG_DEBUG_VM
 			printk(KERN_ALERT "removing pfn %lx from LRU failed\n",
 			       pfn);
 			dump_page(page);
 #endif
+			/* Becasue we don't have big zone->lock. we should
+			   check this again here. */
+			if (page_count(page)) {
+				not_managed++;
+				break;
+			}
 		}
 	}
 	ret = -EBUSY;