Hi all, Here's v2 of my mmu notifier debug checks. I think the last two patches could probably be extended to all callbacks, but I'm not really clear on the exact rules. But happy to extend them if there's interest. This stuff helps us catch issues in the i915 mmu notifier implementation. Thanks, Daniel Daniel Vetter (4): 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 include/linux/kernel.h | 10 +++++++++- include/linux/mmu_notifier.h | 6 ++++++ include/linux/sched.h | 4 ++++ kernel/sched/core.c | 6 +++--- mm/mmu_notifier.c | 18 +++++++++++++++++- 5 files changed, 39 insertions(+), 5 deletions(-) -- 2.20.0.rc1
