linux-kernel - [PATCH 0/4] proc: deuglify task

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Date:	Fri, 7 Nov 2014 21:14:24 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Aaron Tomlin <atomlin@...hat.com>,
	Alexey Dobriyan <adobriyan@...il.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Sterling Alexander <stalexan@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 0/4] proc: deuglify task_state()

Hello.

I tried to optimize the usage of tasklist_lock in exit_notify() paths
but found the bug which should be fixed first: the EXIT_DEAD setting
in reparent_leader() can break the task_ppid_nr_ns()-like code and
ptrace_parent().

I am still thinking about the "right" fix, but whatever we do we need
to cleanup these users, probably before the fix.

One particular user is task_state(), but it also asks for other off-
topic cleanups which I believe make sense anyway, lets do this first.

Oleg.

 fs/proc/array.c |   47 ++++++++++++++++++++++-------------------------
 1 files changed, 22 insertions(+), 25 deletions(-)

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