[RFC PATCH 04/10] pipe: Use head and tail pointers for the ring, not cursor and length [ver #2]

[Linus Torvalds]

On Sun, Dec 8, 2019 at 9:56 AM Johannes Hirte
<johannes.hirte at datenkhaos.de> wrote:
>
> whereas with a fresh cloned repo I get:
>
> v5.4-13331-g9455d25f4e3b
>
> I assume the later is right. With this version the bug seems to be
> fixed, regardless of the commit count. Tested with different websites
> and firefox works as expected again.

Ok, good. It was almost certainly the select/poll race fix - Mariusz
Ceier reported a problem with youtube hanging, and confirmed that the
poll/select fix seems to have cleared that one up. I suspect that your
hang on fb and spiegel.de were the same thing.

So I think the pipe code is stable again with current -git. Thanks for
reporting and testing,

             Linus