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

[Johannes Hirte]

On 2019 Dez 06, Linus Torvalds wrote:
> On Fri, Dec 6, 2019 at 1:47 PM Johannes Hirte
> <johannes.hirte at datenkhaos.de> wrote:
> >
> > This change breaks firefox on my system. I've noticed that some pages
> > doesn't load correctly anymore (e.g. facebook, spiegel.de). The pages
> > start loading and than stop. Looks like firefox is waiting for some
> > dynamic loading content. I've bisected to this commit, but can't revert
> > because of conflicts.
> 
> Can you check the current git tree, and see if we've fixed it for you.
> There are several fixes there, one being the (currently) topmost
> commit 76f6777c9cc0 ("pipe: Fix iteration end check in
> fuse_dev_splice_write()").
> 
> I _just_ pushed out that one, so check that you get it - it sometimes
> takes a couple of minutes for the public-facing git servers to mirror
> out. I doubt that's the one that would fix firefox, but still..
> 
>                Linus

Tested with 5.4.0-11505-g347f56fb3890 and still the same wrong behavior.
Reliable testcase is facebook, where timeline isn't updated with firefox.

-- 
Regards,
  Johannes Hirte