diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index d2003cd..c17f69b 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -609,8 +609,8 @@
 
 	if (free_blocks - (nblocks + root_blocks + dirty_blocks) <
 						EXT4_FREEBLOCKS_WATERMARK) {
-		free_blocks  = percpu_counter_sum(fbc);
-		dirty_blocks = percpu_counter_sum(dbc);
+		free_blocks  = percpu_counter_sum_and_set(fbc);
+		dirty_blocks = percpu_counter_sum_and_set(dbc);
 		if (dirty_blocks < 0) {
 			printk(KERN_CRIT "Dirty block accounting "
 					"went wrong %lld\n",