Hi all (but I guess mostly Jason), Finally gotten around to rebasing the previous version, fixing the rebase fail in there, update the commit message a bit and give this a spin with some tests. Nicely caught a lockdep splat that we're now discussing in i915, and seems to not have misfired anywhere else (including a few oom). Review, comments and everything very much appreciated. Plus I'd really like to land this, there's more hmm_mirror users in-flight, and I've seen some that get things wrong which this patchset should catch. Thanks, Daniel Daniel Vetter (5): mm: Check if mmu notifier callbacks are allowed to fail kernel.h: Add non_block_start/end() mm, notifier: Catch sleeping/blocking for !blockable mm, notifier: Add a lockdep map for invalidate_range_start mm/hmm: WARN on illegal ->sync_cpu_device_pagetables errors include/linux/kernel.h | 10 +++++++++- include/linux/mmu_notifier.h | 6 ++++++ include/linux/sched.h | 4 ++++ kernel/sched/core.c | 19 ++++++++++++++----- mm/hmm.c | 3 +++ mm/mmu_notifier.c | 17 ++++++++++++++++- 6 files changed, 52 insertions(+), 7 deletions(-) -- 2.22.0
