Workarounds for copy_file_range issues#75428

Merged

bors merged 3 commits intorust-lang:masterfrom the8472:fix-copy-eopnotsupp

Sep 5, 2020

Commits on Aug 11, 2020

Workaround for copy_file_range spuriously returning EOPNOTSUPP when attemted on a NFS mount under RHEL/CentOS 7.
the8472
committed

Commits on Aug 12, 2020

more concise error matching
the8472
committed

Commits on Aug 14, 2020

perform copy_file_range until EOF is reached instead of basing things on file size
the8472
committed