Uninterruptible Sleep ???

From: ashish gupta (ashish407@yahoo.com)
Date: Tue Aug 29 2000 - 16:35:11 EST


Hi,
        Before calling get_pid the state of child
is set to TASK_UNINTERRUPTIBLE and after get_pid
it is changed to TASK_RUNNNING.Why ?? Is it possbile
that a process may leave the CPU during get_pid?
        Can any body tell me how linux is ensuring that
scheduling can not happen when a process is executing
in a system call and timer interrupt has occured.

Please do a CC to me also.
Thanks in advance
Ashish


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