backport some bugfix patches for mm/sched/kprobes modules.
Aili Yao (1): mm,hwpoison: return -EHWPOISON to denote that the page has already been poisoned
Pu Lehui (1): powerpc/kprobes: Fix kprobe Oops happens in booke
Tony Luck (1): mm/memory-failure: use a mutex to avoid memory_failure() races
Yu Jiahua (2): sched: Access control for sysctl_update_load_latency sched: Fix branch prediction error in static_key
arch/powerpc/kernel/kprobes.c | 3 ++- kernel/sched/fair.c | 5 ++++- mm/memory-failure.c | 40 ++++++++++++++++++++++------------- 3 files changed, 31 insertions(+), 17 deletions(-)