mm/mmu_notifiers: hoist do_mmu_notifier_register down_write to the caller
This simplifies the code to not have so many one line functions and extra logic. __mmu_notifier_register() simply becomes the entry point to register the notifier, and the other one calls it under lock. Also add a lockdep_assert to check that the callers are holding the lock as expected. Link: https://lore.kernel.org/r/20190806231548.25242-2-jgg@ziepe.ca Suggested-by:Christoph Hellwig <hch@infradead.org> Reviewed-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Ralph Campbell <rcampbell@nvidia.com> Tested-by:
Ralph Campbell <rcampbell@nvidia.com> Signed-off-by:
Jason Gunthorpe <jgg@mellanox.com>
parent
9c240a7b
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