simplify follow_pte a bit

From: Christoph Hellwig
Date: Thu Oct 29 2020 - 06:16:52 EST

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Hi Andrew,

this small series drops the not needed follow_pte_pmd exports, and
simplifies the follow_pte family of functions a bit.

Next message: Christoph Hellwig: "[PATCH 3/3] proc: switch over direct seq_read method calls to seq_read_iter"
Previous message: Christoph Hellwig: "[PATCH 2/3] proc: wire up generic_file_splice_read for iter ops"
Next in thread: Christoph Hellwig: "[PATCH 1/2] mm: unexport follow_pte_pmd"
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