[Bug 1998308] [NEW] copy_file_range fails with EXDEV on copy to or from tmpfs

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copy_file_range(2) from ext4 to tmpfs fails.
Same is true from tmpfs to ext4.

gcc is already the newest version (4:11.2.0-1ubuntu1).
libc6 is already the newest version (2.35-0ubuntu3.1).
linux-image-lowlatency is already the newest version (5.15.0.53.48).

See example program attached.

** Affects: glibc (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment
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copy_file_range fails with EXDEV on copy to or from tmpfs
https://bugs.launchpad.net/bugs/1998308
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