Re: Q about do_fork()

[John Levon <moz@compsoc.man.ac.uk>]

On Fri, 6 Apr 2001, petur thors wrote:

> Hi
> I was wondering. If you are on an SMP machine and two diffirent processes do
> a fork() or a clone() system call at the same time, can the corresponding
> kernel control paths enter the do_fork fuction in kernel/fork.c at the same
> time or is one locked out while the other does his thing. I would be very
> happy if someone could give me a hint.
> Many, many thanks.

I can't see any locks around do_fork(). You can look yourself, in the file arch/i386/process.c

I also can't see (looking quickly) any problem with the routine being multi-threaded

john

-- 
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unstoned."
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