1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 939386e0aeda..0d16208178c7 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -729,6 +729,14 @@ static inline void vma_mark_detached(struct vm_area_struct *vma, bool detached)
 	vma->detached = detached;
 }
 
+static inline void release_fault_lock(struct vm_fault *vmf)
+{
+	if (vmf->flags & FAULT_FLAG_VMA_LOCK)
+		vma_end_read(vmf->vma);
+	else
+		mmap_read_unlock(vmf->vma->vm_mm);
+}
+
 struct vm_area_struct *lock_vma_under_rcu(struct mm_struct *mm,
 					  unsigned long address);
 
@@ -749,6 +757,11 @@ static inline struct vm_area_struct *lock_vma_under_rcu(struct mm_struct *mm,
 	return NULL;
 }
 
+static inline void release_fault_lock(struct vm_fault *vmf)
+{
+	mmap_read_unlock(vmf->vma->vm_mm);
+}
+
 #endif /* CONFIG_PER_VMA_LOCK */
 
 extern const struct vm_operations_struct vma_dummy_vm_ops;