Date: Sun, 29 Jan 2006 00:33:38 -0800
From: Andrew Morton <akpm@osdl.org>
To: ebiederm@xmission.com (Eric W. Biederman)
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] pid: Don't hash pid 0.
Message-Id: <20060129003338.28675b78.akpm@osdl.org>
In-Reply-To: <m1ek2rfsu9.fsf@ebiederm.dsl.xmission.com>
References: <m1ek2rfsu9.fsf@ebiederm.dsl.xmission.com>
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ebiederm@xmission.com (Eric W. Biederman) wrote:
>
> pid 0 is never exported to userspace, so hashing it servers no useful
>  purpose.

uh-huh.

>  Explicitly not hashing pid 0 allows struct pid to be marked as not
>  hashed, and it allows us to avoid checks if for pid 0 when searching
>  for processes to signal if pid 0 does not have a special meaning.

Were you planning on sending a patch to avoid those checks?  Because right
now, this patch looks like a net loss.
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