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Date:   Sat, 7 Dec 2019 01:00:30 +0100
From:   Johannes Hirte <johannes.hirte@datenkhaos.de>
To:     Linus Torvalds <torvalds@linux-foundation.org>
Cc:     David Howells <dhowells@redhat.com>,
        Rasmus Villemoes <linux@rasmusvillemoes.dk>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Nicolas Dichtel <nicolas.dichtel@6wind.com>, raven@themaw.net,
        Christian Brauner <christian@brauner.io>,
        keyrings@vger.kernel.org, linux-usb@vger.kernel.org,
        linux-block <linux-block@vger.kernel.org>,
        LSM List <linux-security-module@vger.kernel.org>,
        linux-fsdevel <linux-fsdevel@vger.kernel.org>,
        Linux API <linux-api@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH 04/10] pipe: Use head and tail pointers for the ring,
 not cursor and length [ver #2]
Message-ID: <20191207000015.GA1757@latitude>
References: <157186182463.3995.13922458878706311997.stgit@warthog.procyon.org.uk>
 <157186186167.3995.7568100174393739543.stgit@warthog.procyon.org.uk>
 <20191206214725.GA2108@latitude>
 <CAHk-=wga0MPEH5hsesi4Cy+fgaaKENMYpbg2kK8UA0qE3iupgw@mail.gmail.com>
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On 2019 Dez 06, Linus Torvalds wrote:
> On Fri, Dec 6, 2019 at 1:47 PM Johannes Hirte
> <johannes.hirte@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