throtl_rb_first   644 block/blk-throttle.c 	tg = throtl_rb_first(parent_sq);
throtl_rb_first  1194 block/blk-throttle.c 		struct throtl_grp *tg = throtl_rb_first(parent_sq);
throtl_rb_first  2317 block/blk-throttle.c 	while ((tg = throtl_rb_first(parent_sq))) {