Implement copy_file_range operation #620
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glommer
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Nov 22, 2023
copy_file_range is a convenient way to COW blocks within the same filesystem.
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What does this PR do?
copy_file_range is a convenient way to COW blocks within the same filesystem.
Motivation
I want to utilize reflinks to copy data between files. Ideally at some point in the future this will get integrated into io_uring instead of being a blocking syscall (axboe/liburing#831).
Related issues
Additional Notes
Checklist
X] I have added unit tests to the code I am submitting
[] My unit tests cover both failure and success scenarios
[] If applicable, I have discussed my architecture