What is the proper way to close file received by file_open_root?

[Tamir Carmeli]

Hi,
I see in elixir
<https://elixir.bootlin.com/linux/v4.19.1/ident/file_open_root> that there
4 calls in the kernel. In two of them fput is used for cleanup, and in
coredump.c filp_close is used.
The function has no documentation and no information resides in the
kernel's Documentation directory.

What is the correct way to cleanup the file?

Thanks,
Tamir
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