From: Oleg Nesterov <oleg@tv-sign.ru>
Date: Mon, 26 Jun 2006 07:26:09 +0000 (-0700)
Subject: [PATCH] coredump: shutdown current process first
X-Git-Tag: v2.6.18-rc1~735
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5debfa6da5b06954bc79fe8deed0d1062c58dcec;p=pandora-kernel.git

[PATCH] coredump: shutdown current process first

This patch optimizes zap_threads() for the case when there are no ->mm
users except the current's thread group.  In that case we can avoid
'for_each_process()' loop.

It also adds a useful invariant: SIGNAL_GROUP_EXIT (if checked under
->siglock) always implies that all threads (except may be current) have
pending SIGKILL.

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

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