371 	struct dm_bio_prison_cell *old_ocell;  member
1136 		cell_defer(cache, mg->old_ocell, false);  in migration_failure()
1142 		cell_defer(cache, mg->old_ocell, mg->promote ? false : true);  in migration_failure()
1162 		cell_defer(cache, mg->old_ocell, false);  in migration_success_pre_commit()
1208 		cell_defer(cache, mg->old_ocell, mg->promote ? false : true);  in migration_success_post_commit()
1485 	mg->old_ocell = NULL;  in promote()
1509 	mg->old_ocell = cell;  in writeback()
1520 				struct dm_bio_prison_cell *old_ocell,  in demote_then_promote()  argument
1536 	mg->old_ocell = old_ocell;  in demote_then_promote()
1564 	mg->old_ocell = cell;  in invalidate()
1585 	mg->old_ocell = NULL;  in discard()
2079 	struct dm_bio_prison_cell *old_ocell;  in writeback_some_dirty_blocks()  local
2090 		    get_cell(cache, oblock, &structs, &old_ocell)) {  in writeback_some_dirty_blocks()
2095 		writeback(cache, &structs, oblock, cblock, old_ocell);  in writeback_some_dirty_blocks()