linux-kernel - Re: [PATCH 0/1] proc_flush_task: flush /proc/tid/task/pid when a sub-thread exits

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Message-ID: <m1ws6hr405.fsf@fess.ebiederm.org>
Date:	Thu, 09 Jul 2009 13:32:58 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Dominic Duval <dduval@...hat.com>,
	Frank Hirtz <fhirtz@...hat.com>,
	"Fuller\, Johnray" <Johnray.Fuller@...com>,
	"James M. Leddy" <jleddy@...hat.com>,
	Larry Woodman <lwoodman@...hat.com>,
	Paul Batkowski <pbatkowski@...hat.com>,
	Roland McGrath <roland@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/1] proc_flush_task: flush /proc/tid/task/pid when a sub-thread exits

Oleg Nesterov <oleg@...hat.com> writes:

> Alexey, Eric, could you please review and ack/nack ?
>
> I just can't understand what was the reason for "if (thread_group_leader())"
> check in proc_flush_task() pathes.

Give me a day or two.

There are definitely bugs there.  My cleanup patch for that has gotten
lost several times.

All of this is an optimization so it isn't critical we get this right.
Just a good idea.

Eric
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