tree bb8ff8673b3415318236a6efe0a8c5081ef32815
parent b396637841fff79e9520514e8dcbe769c20a2ea0
author Heiko Carstens <heiko.carstens@de.ibm.com> 1306396109 +0200
committer Heiko Carstens <heiko.carstens@de.ibm.com> 1306396105 +0200

[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>