1 files changed, 4 insertions, 0 deletions

diff --git a/mm/rmap.c b/mm/rmap.c
index e41375a6b029..92e14dcfe737 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -177,6 +177,10 @@ static void anon_vma_chain_link(struct vm_area_struct *vma,
         list_add(&avc->same_vma, &vma->anon_vma_chain);
 
         anon_vma_lock(anon_vma);
+        /*
+         * It's critical to add new vmas to the tail of the anon_vma,
+         * see comment in huge_memory.c:__split_huge_page().
+         */
         list_add_tail(&avc->same_anon_vma, &anon_vma->head);
         anon_vma_unlock(anon_vma);
 }