450 					struct dm_snapshot **snap_dest,  in __find_snapshots_sharing_cow()  argument
475 		} else if (snap_dest)  in __find_snapshots_sharing_cow()
476 			*snap_dest = s;  in __find_snapshots_sharing_cow()
491 	struct dm_snapshot *snap_src = NULL, *snap_dest = NULL;  in __validate_exception_handover()  local
495 	if ((__find_snapshots_sharing_cow(snap, &snap_src, &snap_dest,  in __validate_exception_handover()
497 	    snap_dest) {  in __validate_exception_handover()
1454 				  struct dm_snapshot *snap_dest)  in __handover_exceptions()  argument
1464 	u.table_swap = snap_dest->complete;  in __handover_exceptions()
1465 	snap_dest->complete = snap_src->complete;  in __handover_exceptions()
1468 	u.store_swap = snap_dest->store;  in __handover_exceptions()
1469 	snap_dest->store = snap_src->store;  in __handover_exceptions()
1470 	snap_dest->store->userspace_supports_overflow = u.store_swap->userspace_supports_overflow;  in __handover_exceptions()
1473 	snap_dest->store->snap = snap_dest;  in __handover_exceptions()
1476 	snap_dest->ti->max_io_len = snap_dest->store->chunk_size;  in __handover_exceptions()
1477 	snap_dest->valid = snap_src->valid;  in __handover_exceptions()
1478 	snap_dest->snapshot_overflowed = snap_src->snapshot_overflowed;  in __handover_exceptions()
1492 	struct dm_snapshot *snap_src = NULL, *snap_dest = NULL;  in snapshot_dtr()  local
1496 	(void) __find_snapshots_sharing_cow(s, &snap_src, &snap_dest, NULL);  in snapshot_dtr()
1497 	if (snap_src && snap_dest && (s == snap_src)) {  in snapshot_dtr()
1498 		down_write(&snap_dest->lock);  in snapshot_dtr()
1499 		snap_dest->valid = 0;  in snapshot_dtr()
1500 		up_write(&snap_dest->lock);  in snapshot_dtr()
2223 	struct dm_snapshot *snap_src = NULL, *snap_dest = NULL;  in snapshot_preresume()  local
2226 	(void) __find_snapshots_sharing_cow(s, &snap_src, &snap_dest, NULL);  in snapshot_preresume()
2227 	if (snap_src && snap_dest) {  in snapshot_preresume()
2248 	struct dm_snapshot *snap_src = NULL, *snap_dest = NULL, *snap_merging = NULL;  in snapshot_resume()  local
2282 	(void) __find_snapshots_sharing_cow(s, &snap_src, &snap_dest, NULL);  in snapshot_resume()
2283 	if (snap_src && snap_dest) {  in snapshot_resume()
2285 		down_write_nested(&snap_dest->lock, SINGLE_DEPTH_NESTING);  in snapshot_resume()
2286 		__handover_exceptions(snap_src, snap_dest);  in snapshot_resume()
2287 		up_write(&snap_dest->lock);  in snapshot_resume()
2415 		struct dm_snapshot *snap_src = NULL, *snap_dest = NULL;  in snapshot_io_hints()  local
2419 		(void) __find_snapshots_sharing_cow(snap, &snap_src, &snap_dest, NULL);  in snapshot_io_hints()
2420 		if (snap_src && snap_dest)  in snapshot_io_hints()