• Pavel Emelyanov's avatar
    Isolate the explicit usage of signal->pgrp · 9a2e7057
    Pavel Emelyanov authored
    The pgrp field is not used widely around the kernel so it is now marked as
    deprecated with appropriate comment.
    
    The initialization of INIT_SIGNALS is trimmed because
    a) they are set to 0 automatically;
    b) gcc cannot properly initialize two anonymous (the second one
       is the one with the session) unions. In this particular case
       to make it compile we'd have to add some field initialized
       right before the .pgrp.
    
    This is the same patch as the 1ec320af
    
     one
    (from Cedric), but for the pgrp field.
    
    Some progress report:
    
    We have to deprecate the pid, tgid, session and pgrp fields on struct
    task_struct and struct signal_struct.  The session and pgrp are already
    deprecated.  The tgid value is close to being such - the worst known usage
    in in fs/locks.c and audit code.  The pid field deprecation is mainly
    blocked by numerous printk-s around the kernel that print the tsk->pid to
    log.
    Signed-off-by: default avatarPavel Emelyanov <xemul@openvz.org>
    Cc: Oleg Nesterov <oleg@tv-sign.ru>
    Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com>
    Cc: Cedric Le Goater <clg@fr.ibm.com>
    Cc: Serge Hallyn <serue@us.ibm.com>
    Cc: "Eric W. Biederman" <ebiederm@xmission.com>
    Cc: Herbert Poetzl <herbert@13thfloor.at>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    9a2e7057
init_task.h 5.23 KB