1 files changed, 3 insertions, 2 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index 876b31cd822d..a28d11e10877 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -250,8 +250,9 @@ static inline int dup_mmap(struct mm_struct * mm, struct mm_struct * oldmm)
 
                 /*
                  * Link in the new vma and copy the page table entries:
-                 * link in first so that swapoff can see swap entries,
-                 * and try_to_unmap_one's find_vma find the new vma.
+                 * link in first so that swapoff can see swap entries.
+                 * Note that, exceptionally, here the vma is inserted
+                 * without holding mm->mmap_sem.
                  */
                 spin_lock(&mm->page_table_lock);
                 *pprev = tmp;