Re: [5.11 regression] "tty: implement write_iter" breaks TIOCCONS

[Linus Torvalds]

On Fri, Jan 29, 2021 at 12:02 PM Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> It's fairly easy to work around in this in the tty layer by just
> avoiding that function entirely, so I'll cook up a patch to do that.
> But I'm adding the appropriate people to the participants here because
> this really is very subtle if you ever hit it.

Here's the patch to make the tty layer just do the redirection
entirely internally, avoiding that mis-designed vfs_iocb_iter_write()
function.

Hans, does this fix things for you? I'm pretty confident it will, but
always best to double-check..

                 Linus

Attachment: patch
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