From: Oleg Nesterov <oleg@redhat.com>
Date: Wed, 10 Dec 2014 23:54:39 +0000 (-0800)
Subject: usermodehelper: don't use CLONE_VFORK for ____call_usermodehelper()
X-Git-Tag: omap-for-v3.19/fixes-rc1~142^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7117bc8888aff73fb081956afa501edcc85a1552;p=pandora-kernel.git

usermodehelper: don't use CLONE_VFORK for ____call_usermodehelper()

After "kernel/kmod: fix use-after-free of the sub_infostructure"
CLONE_VFORK in __call_usermodehelper() buys nothing, we rely on on
umh_complete() in ____call_usermodehelper() anyway.

Remove it.  This also eliminates the unnecessary sleep/wakeup in the
likely case, and this allows the next change.

While at it, kill the "int wait" locals in ____call_usermodehelper() and
__call_usermodehelper(), they can safely use sub_info->wait.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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