[GIT PULL] pipe: Notification queue preparation

[David Sterba]

On Thu, Dec 05, 2019 at 05:25:20PM +0000, David Howells wrote:
> I've just posted a couple of patches - can you check to see if they fix your
> problem?
> 
> https://lore.kernel.org/linux-fsdevel/157556649610.20869.8537079649495343567.stgit@warthog.procyon.org.uk/T/#t

Not fixed, the test still hangs with the same call stack.