Help in pid_task()

[sebas sujeen]

hey guys, i am having a small doubt in "pid_task" function in
kernel/pid.c.. Assume if the type is PIDTYPE_PGID, then it means that there
are multiple processes associated with the process group and each has its
own task_struct..so how come the function returns the task_struct of the
"head" element of the hlist_node? Sorry if my assumptions are wrong! Thanks
in advance
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20130119/3a49c637/attachment-0001.html