1 files changed, 5 insertions, 4 deletions

diff --git a/mm/memory.c b/mm/memory.c
index 4b5a282e1107..fbf74112de5b 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1326,9 +1326,9 @@ static void unmap_single_vma(struct mmu_gather *tlb,
                          * safe to do nothing in this case.
                          */
                         if (vma->vm_file) {
-                                mutex_lock(&vma->vm_file->f_mapping->i_mmap_mutex);
+                                i_mmap_lock_write(vma->vm_file->f_mapping);
                                 __unmap_hugepage_range_final(tlb, vma, start, end, NULL);
-                                mutex_unlock(&vma->vm_file->f_mapping->i_mmap_mutex);
+                                i_mmap_unlock_write(vma->vm_file->f_mapping);
                         }
                 } else
                         unmap_page_range(tlb, vma, start, end, details);
@@ -2377,12 +2377,12 @@ void unmap_mapping_range(struct address_space *mapping,
                 details.last_index = ULONG_MAX;
 
 
-        mutex_lock(&mapping->i_mmap_mutex);
+        i_mmap_lock_read(mapping);
         if (unlikely(!RB_EMPTY_ROOT(&mapping->i_mmap)))
                 unmap_mapping_range_tree(&mapping->i_mmap, &details);
         if (unlikely(!list_empty(&mapping->i_mmap_nonlinear)))
                 unmap_mapping_range_list(&mapping->i_mmap_nonlinear, &details);
-        mutex_unlock(&mapping->i_mmap_mutex);
+        i_mmap_unlock_read(mapping);
 }
 EXPORT_SYMBOL(unmap_mapping_range);
 
@@ -3365,6 +3365,7 @@ int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma,
 
         return ret;
 }
+EXPORT_SYMBOL_GPL(handle_mm_fault);
 
 #ifndef __PAGETABLE_PUD_FOLDED
 /*