From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Thu, 26 May 2011 07:48:29 +0000 (+0200)
Subject: [S390] mm: handle kernel caused page fault oom situations
X-Git-Tag: v3.0-rc1~45^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=99583181cbf2252dd0554eef6f419a6b22cd33ea;p=pandora-kernel.git

[S390] mm: handle kernel caused page fault oom situations

If e.g. copy_from_user() generates a page fault and the kernel runs
into an OOM situation the system might lock up.
If the OOM killer sends a SIG_KILL to the current process it can't
handle it since it is stuck in a copy_from_user() - page fault loop.

Fix this by adding the same fix as other architectures have.

E.g. the x86 variant f86268 "x86/mm: Handle mm_fault_error() in kernel
space"

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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