1 files changed, 3 insertions, 3 deletions

diff --git a/mm/mremap.c b/mm/mremap.c
index b147f66f4c40..84aa36f9f308 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -99,7 +99,7 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd,
         spinlock_t *old_ptl, *new_ptl;
 
         /*
-         * When need_rmap_locks is true, we take the i_mmap_mutex and anon_vma
+         * When need_rmap_locks is true, we take the i_mmap_rwsem and anon_vma
          * locks to ensure that rmap will always observe either the old or the
          * new ptes. This is the easiest way to avoid races with
          * truncate_pagecache(), page migration, etc...
@@ -119,7 +119,7 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd,
         if (need_rmap_locks) {
                 if (vma->vm_file) {
                         mapping = vma->vm_file->f_mapping;
-                        mutex_lock(&mapping->i_mmap_mutex);
+                        i_mmap_lock_write(mapping);
                 }
                 if (vma->anon_vma) {
                         anon_vma = vma->anon_vma;
@@ -156,7 +156,7 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd,
         if (anon_vma)
                 anon_vma_unlock_write(anon_vma);
         if (mapping)
-                mutex_unlock(&mapping->i_mmap_mutex);
+                i_mmap_unlock_write(mapping);
 }
 
 #define LATENCY_LIMIT   (64 * PAGE_SIZE)