1 files changed, 5 insertions, 6 deletions

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index e2f7f5aaaafb..45eaae030628 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -713,6 +713,11 @@ static int __do_huge_pmd_anonymous_page(struct mm_struct *mm,
                 return VM_FAULT_OOM;
 
         clear_huge_page(page, haddr, HPAGE_PMD_NR);
+        /*
+         * The memory barrier inside __SetPageUptodate makes sure that
+         * clear_huge_page writes become visible before the set_pmd_at()
+         * write.
+         */
         __SetPageUptodate(page);
 
         spin_lock(&mm->page_table_lock);
@@ -724,12 +729,6 @@ static int __do_huge_pmd_anonymous_page(struct mm_struct *mm,
         } else {
                 pmd_t entry;
                 entry = mk_huge_pmd(page, vma);
-                /*
-                 * The spinlocking to take the lru_lock inside
-                 * page_add_new_anon_rmap() acts as a full memory
-                 * barrier to be sure clear_huge_page writes become
-                 * visible after the set_pmd_at() write.
-                 */
                 page_add_new_anon_rmap(page, vma, haddr);
                 set_pmd_at(mm, haddr, pmd, entry);
                 pgtable_trans_huge_deposit(mm, pgtable);