* Florian Weimer: > * Vít Novotný: > > > with the increasing support for copy-on-write (i.e. reflink) in modern > > filesystems, it seems reasonable for head(1) and tail(1) to try calling > > ioctl_ficlonerange(2) where available before copying. > > How does this relate to the availability of copy_file_range?
Both system calls first appeared in Linux 4.5, but they both serve a different purpose: - copy_file_range enables fast in-kernel copying. - ioctl_ficlonerange enables CoW sharing of data between files. Best Regards, Vít
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