linux-kernel - Re: init's children list is long and slows reaping children.

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Message-ID: <m16489752i.fsf@ebiederm.dsl.xmission.com>
Date:	Fri, 06 Apr 2007 12:04:05 -0600
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Roland Dreier <rdreier@...co.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Oleg Nesterov <oleg@...sign.ru>,
	Robin Holt <holt@....com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Chris Snook <csnook@...hat.com>, linux-kernel@...r.kernel.org,
	Jack Steiner <steiner@...ricas.sgi.com>
Subject: Re: init's children list is long and slows reaping children.

Roland Dreier <rdreier@...co.com> writes:

>  > no. Two _completely separate_ lists.
>  > 
>  > i.e. a to-be-reaped task will still be on the main list _too_. The main 
>  > list is for all the PID semantics rules. The reap-list is just for 
>  > wait4() processing. The two would be completely separate.
>
> I guess this means we add another list head to struct task_struct.
> Not that big a deal, but it does make me a little sad to think about
> task_struct getting even bigger....

signal_struct please.  It isn't that much better but still...

Eric
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