From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Date: Mon, 7 Dec 2009 11:51:44 +0000 (+0100)
Subject: [S390] Improve notify_page_fault implementation.
X-Git-Tag: v2.6.33-rc1~349^2~41
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7ecb344ae80bc03397ded3b004e06ecfe32becf9;p=pandora-kernel.git

[S390] Improve notify_page_fault implementation.

notify_page_fault does a preempt_disable/preempt_enable for each
fault generated by a kernel access to user space. If kprobes
is not active that is unnecessary since the interrupts are not
reenabled yet. To play safe repeat the kprobe_running check after
preempt_disable().

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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