Since v1 I fixed the hang in nios2, split the fork patch into two as Linus asked, and added hugetlb code for the "don't bother write protecting already writeprotected" patch.
Please consider this for more cooking in -mm. Thanks, Nick Nicholas Piggin (5): nios2: update_mmu_cache clear the old entry from the TLB mm/cow: don't bother write protecting already write-protected huge pages mm/cow: optimise pte accessed bit handling in fork mm/cow: optimise pte dirty bit handling in fork mm: optimise pte dirty/accessed bit setting by demand based pte insertion arch/nios2/mm/cacheflush.c | 2 ++ mm/huge_memory.c | 24 ++++++++++++++++-------- mm/hugetlb.c | 2 +- mm/memory.c | 19 +++++++++++-------- mm/vmscan.c | 8 ++++++++ 5 files changed, 38 insertions(+), 17 deletions(-) -- 2.18.0