vmscan.c: fix invalid strict_strtoul() check in write_scan_unevictable_node()

[pandora-kernel.git] / mm / vmscan.c

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 51bc4bf..ac644fe 100644 (file)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3520,8 +3520,8 @@ static ssize_t write_scan_unevictable_node(struct sys_device *dev,
        unsigned long res;
        unsigned long req = strict_strtoul(buf, 10, &res);
 
-       if (!req)
-               return 1;       /* zero is no-op */
+       if (req || !res)
+               return 1; /* Invalid input or zero is no-op */
 
        for (zone = node_zones; zone - node_zones < MAX_NR_ZONES; ++zone) {
                if (!populated_zone(zone))