blk_add_trace_bio_remap 1146 kernel/trace/blktrace.c 	ret = register_trace_block_bio_remap(blk_add_trace_bio_remap, NULL);
blk_add_trace_bio_remap 1155 kernel/trace/blktrace.c 	unregister_trace_block_bio_remap(blk_add_trace_bio_remap, NULL);