> Hi, > Bitfields are likely to be implemented using read-modify-write semantics. > Modifications of either b_jlist or b_jmodified must be done under lock > since they share same uint. I guess this lock is missing somewhere. Hi, I agree with you. b_jlist and b_jmodified share the same unit. I think they are separated. Thanks. {.n++%ݶw{.n+{G{ayʇڙ,jfhz_(階ݢj"mG?&~iOzv^m ?I