mm: vmscan: never isolate more pages than necessary

[cascardo/linux.git] / mm / vmscan.c

diff --git a/mm/vmscan.c b/mm/vmscan.c
index bf23c88..0b1aab4 100644 (file)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1359,7 +1359,8 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan,
        unsigned long nr_taken = 0;
        unsigned long scan;
 
-       for (scan = 0; scan < nr_to_scan && !list_empty(src); scan++) {
+       for (scan = 0; scan < nr_to_scan && nr_taken < nr_to_scan &&
+                                       !list_empty(src); scan++) {
                struct page *page;
                int nr_pages;