Re: [PATCH 0/2] struct pid-ify autofs4

From: Miklos Szeredi
Date: Mon Sep 24 2012 - 09:34:41 EST


Ian Kent <raven@xxxxxxxxxx> writes:

> On Fri, 2012-09-21 at 17:44 +0200, Miklos Szeredi wrote:
>> Miklos Szeredi <miklos@xxxxxxxxxx> writes:
>>
>> > These two patches change autofs4 to store struct pid pointers instead of pid_t
>> > values.
>> >
>> > Fixed various issues with the previous post. Not tested, handle with
>> > care!
>>
>> Customer gave positive test results.
>
> For what exactly, there's no problem description in these patches?

>From what I understand (and I'm not an expert by any means) is that
autofs doesn't work if containers are used. The first patch fixes this.

Both the patches replace pid_t with a refcounted struct pid object,
which has better lifetime properties: you don't know whether a pid_t is
valid, because pid numbers are reused, while pid objects remain valid
until there are no more references to them.

Thanks,
Miklos
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