[issue22367] Add open_file_descriptor parameter to fcntl.lockf() (use the new F_OFD_SETLK flag)

[Dong-hee Na]

Dong-hee Na <donghee.na92 at gmail.com> added the comment:

According to https://www.gnu.org/software/libc/manual/html_node/Open-File-Description-Locks.html

It is important to distinguish between the open file description (an instance of an open file, usually created by a call to open) and an open file descriptor, which is a numeric value that refers to the open file description. The locks described here are associated with the open file description and not the open file descriptor

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<https://bugs.python.org/issue22367>
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