On Wed Jan 20, 2021 at 5:44 PM NZDT, Linus Torvalds wrote:
>
> But in the meantime, here's two more patches to try on top of the
> previous four. They shouldn't matter, other than making the non-icanon
> throughput a lot better. But the more coverage they get, the happier
> I'll be.
>
I tried
On Wed Jan 20, 2021 at 9:24 AM NZDT, Linus Torvalds wrote:
> Anyway, anybody willing to test these tty/pipe patches on the loads
> that failed? Oliver?
Writing this from a kernel with those patches in; happily splice()ing
to and from a pty.
On Wed Jan 20, 2021 at 5:56 AM NZDT, Robert Karszniewicz wrote:
>
> I have bisected this issue down to this commit:
> 4d03e3cc5982 ("fs: don't allow kernel reads and writes without iter
> ops")
>
> Another case I've also noticed is writing to a serial connection:
> kernel write not supported for
On Sun Jan 17, 2021 at 5:46 AM NZDT, Johannes Berg wrote:
> On Sat, 2021-01-16 at 20:35 +1300, Oliver Giles wrote:
> > Commit 36e2c7421f02 (fs: don't allow splice read/write without
> > explicit ops) broke my userspace application which talks to an SSL VPN
> > by splice(
Commit 36e2c7421f02 (fs: don't allow splice read/write without explicit ops)
broke my userspace application which talks to an SSL VPN by splice()ing between
"openssl s_client" and "pppd". The latter operates over a pty, and since that
commit there is no fallback for splice()ing between a pipe
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