Re: [Lse-tech] [PATCH] Linux-2.5 fix for get_pid() hang

[Andrea Arcangeli]

On Mon, Jul 29, 2002 at 02:57:46PM -0500, Paul Larson wrote:
> This is a fix for the problem where get_pid will hang the machine if you
> request a new pid when all available pids are in use.  This also adds
> the appropriate checking for p->tgid in get_pid that was somehow
> overlooked before.  This patch has been in 2.4 since 2.4.19-pre9.

no please, this below patch is superior and it fixes as well fixes a
longstanding race condition in fork() (see the semaphore):

	http://www.us.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.4/2.4.19rc3aa3/10_get_pid-no-deadlock-and-boosted-4

it may not apply cleanly but porting should be trivial.

Andrea