drm/amdkfd: export svm_range_list_lock_and_flush_work

export svm_range_list_lock_and_flush_work to make other kfd parts be
able to sync svm_range_list.
Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdkfd/kfd_svm.c

@@ -1547,7 +1547,7 @@ static int svm_range_validate_and_map(struct mm_struct *mm,
  * Context: Returns with mmap write lock held, pending deferred work flushed
  *
  */
-static void
+void
 svm_range_list_lock_and_flush_work(struct svm_range_list *svms,
 				   struct mm_struct *mm)
 {

drivers/gpu/drm/amd/amdkfd/kfd_svm.h

@@ -188,6 +188,7 @@ void svm_range_prefault(struct svm_range *prange, struct mm_struct *mm,
 			void *owner);
 struct kfd_process_device *
 svm_range_get_pdd_by_adev(struct svm_range *prange, struct amdgpu_device *adev);
+void svm_range_list_lock_and_flush_work(struct svm_range_list *svms, struct mm_struct *mm);
 
 /* SVM API and HMM page migration work together, device memory type
  * is initialized to not 0 when page migration register device memory.