How useful should copy_file_range() be?

Posted Feb 19, 2021 18:55 UTC (Fri) by fw (subscriber, #26023)
In reply to: How useful should copy_file_range() be? by Deewiant
Parent article: How useful should copy_file_range() be?

I see, there is a different code path that reaches the copy_file_range system call.

On the other hand, it is still deeply nested within the library, and it is not immediately obvious whether the callers of the universal copy routines expect consistent file offsets on errors. For a function that is directly modeled on the system call (which seems to be the case for Go), predictable file offset behavior seems quite important.