Toke Høiland-Jørgensen wrote on Tue, Dec 01, 2020:
> > This made me test copy_file_range, and it works with both as well (used
> > not to)
> >
> > interestingly on older kernels this came as default somehow? I have
> > splice working on 5.4.67 :/ so this broke somewhat recently...
>
> Huh, no idea; this is my first time digging into filesystem code, I
> normally do networking and BPF :)
In case anyone else wants to know, this broke in 5.10-rc1 with
36e2c7421f02 ("fs: don't allow splice read/write without explicit ops")
So really a recent regression, good catch :)
--
Dominique
