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mm/gup: make locked never NULL in the internal GUP functions
Now that NULL locked doesn't have a special meaning we can just make it non-NULL in all cases and remove the special tests. get_user_pages() and pin_user_pages() can safely pass in a locked = 1 get_user_pages_remote) and pin_user_pages_remote() can swap in a local variable for locked if NULL is passed. Remove all the NULL checks. Link: https://lkml.kernel.org/r/9-v2-987e91b59705+36b-gup_tidy_jgg@nvidia.com Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Claudio Imbrenda <imbrenda@linux.ibm.com> Cc: David Hildenbrand <david@redhat.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Jason Gunthorpe
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Andrew Morton
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Feb 10, 2023
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