From: Oleg Nesterov <oleg@tv-sign.ru>
Date: Wed, 17 Oct 2007 06:26:59 +0000 (-0700)
Subject: wait_task_zombie: don't fight with non-existing race with a dying ptracee
X-Git-Tag: v2.6.24-rc1~705
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=442a10cf9e1c350b4de4dd6f22c72618a0b13d7f;p=pandora-kernel.git

wait_task_zombie: don't fight with non-existing race with a dying ptracee

The "p->exit_signal == -1 && p->ptrace == 0" check and the comment are
bogus.  We already did exactly the same check in eligible_child(), we did
not drop tasklist_lock since then, and both variables need
write_lock(tasklist) to be changed.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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