425 					struct dm_snapshot **snap_dest,  in __find_snapshots_sharing_cow()  argument
450 		} else if (snap_dest)  in __find_snapshots_sharing_cow()
451 			*snap_dest = s;  in __find_snapshots_sharing_cow()
466 	struct dm_snapshot *snap_src = NULL, *snap_dest = NULL;  in __validate_exception_handover()  local
470 	if ((__find_snapshots_sharing_cow(snap, &snap_src, &snap_dest,  in __validate_exception_handover()
472 	    snap_dest) {  in __validate_exception_handover()
1297 				  struct dm_snapshot *snap_dest)  in __handover_exceptions()  argument
1307 	u.table_swap = snap_dest->complete;  in __handover_exceptions()
1308 	snap_dest->complete = snap_src->complete;  in __handover_exceptions()
1311 	u.store_swap = snap_dest->store;  in __handover_exceptions()
1312 	snap_dest->store = snap_src->store;  in __handover_exceptions()
1313 	snap_dest->store->userspace_supports_overflow = u.store_swap->userspace_supports_overflow;  in __handover_exceptions()
1316 	snap_dest->store->snap = snap_dest;  in __handover_exceptions()
1319 	snap_dest->ti->max_io_len = snap_dest->store->chunk_size;  in __handover_exceptions()
1320 	snap_dest->valid = snap_src->valid;  in __handover_exceptions()
1321 	snap_dest->snapshot_overflowed = snap_src->snapshot_overflowed;  in __handover_exceptions()
1335 	struct dm_snapshot *snap_src = NULL, *snap_dest = NULL;  in snapshot_dtr()  local
1339 	(void) __find_snapshots_sharing_cow(s, &snap_src, &snap_dest, NULL);  in snapshot_dtr()
1340 	if (snap_src && snap_dest && (s == snap_src)) {  in snapshot_dtr()
1341 		mutex_lock(&snap_dest->lock);  in snapshot_dtr()
1342 		snap_dest->valid = 0;  in snapshot_dtr()
1343 		mutex_unlock(&snap_dest->lock);  in snapshot_dtr()
1889 	struct dm_snapshot *snap_src = NULL, *snap_dest = NULL;  in snapshot_preresume()  local
1892 	(void) __find_snapshots_sharing_cow(s, &snap_src, &snap_dest, NULL);  in snapshot_preresume()
1893 	if (snap_src && snap_dest) {  in snapshot_preresume()
1914 	struct dm_snapshot *snap_src = NULL, *snap_dest = NULL, *snap_merging = NULL;  in snapshot_resume()  local
1948 	(void) __find_snapshots_sharing_cow(s, &snap_src, &snap_dest, NULL);  in snapshot_resume()
1949 	if (snap_src && snap_dest) {  in snapshot_resume()
1951 		mutex_lock_nested(&snap_dest->lock, SINGLE_DEPTH_NESTING);  in snapshot_resume()
1952 		__handover_exceptions(snap_src, snap_dest);  in snapshot_resume()
1953 		mutex_unlock(&snap_dest->lock);  in snapshot_resume()