diff --git a/mm/mmu_gather.c b/mm/mmu_gather.c
index ea9683e12936..4f559f4ddd21 100644
--- a/mm/mmu_gather.c
+++ b/mm/mmu_gather.c
@@ -63,6 +63,7 @@ static void tlb_flush_rmap_batch(struct mmu_gather_batch *batch, struct vm_area_
 /**
  * tlb_flush_rmaps - do pending rmap removals after we have flushed the TLB
  * @tlb: the current mmu_gather
+ * @vma: The memory area from which the pages are being removed.
  *
  * Note that because of how tlb_next_batch() above works, we will
  * never start multiple new batches with pending delayed rmaps, so