The comment makes a reference to the function fchmod_path() but this function does not exist in the source tree. However, the function fchmod_opath() exists; it was introduced by the commit 4dfaa528d451aa7926be4f1b4cf8d0ffe338421d. As the comment tells, the function futimens_opath() introduced by the commit f25bff5eaf6881717e873f27c26f2e8264517c16 is similar to the function fchmod_opath(); therefore, it should reference it. This fixes the typo in the comment by referencing the proper function fchmod_opath().
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