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

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Message-ID: <adaps6h767i.fsf@cisco.com>
Date:	Fri, 06 Apr 2007 10:39:29 -0700
From:	Roland Dreier <rdreier@...co.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Oleg Nesterov <oleg@...sign.ru>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	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.

 > 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....

 - R.
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