pfind() and the proc structure

Roman Divacky rdivacky at
Tue Apr 1 00:56:52 PDT 2008

On Mon, Mar 31, 2008 at 11:03:31PM -0700, Rao, Nikhil wrote:
> Hi List,
> The pfind(..) (in kern_proc.c) function below returns the proc structure
> for the PID passed in
> Say the thread that calls pfind() gets blocked at PROC_LOCK(p) (line 255
> below), in the meantime what prevents the process from exiting and
> deallocating the proc structure ? Maybe I am missing something simple or
> the answer requires knowledge of the mutex implementation.

thats what the allproc_lock is there for

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