tag	line	file	source code
FD_ZERO	571	fs/exec.c	FD_ZERO(&current->files->close_on_exec);
FD_ZERO	115	fs/select.c	FD_ZERO(res_in);
FD_ZERO	116	fs/select.c	FD_ZERO(res_out);
FD_ZERO	117	fs/select.c	FD_ZERO(res_ex);
FD_ZERO	160	fs/select.c	FD_ZERO(fdset);