[LTP] Fwd: [bug] mkfs.ext[23] hangs on loop device (aarch64, 5.8+)

[Jan Stancek]

> > ----- Original Message -----
> > > I saw this kind io hang in ltp/fs_fill test reliably and the loop is
> > > over image in tmpfs:
> > > 
> > > https://lkml.org/lkml/2020/7/26/77
> > > 
> > > And I have verified that the following patch can fix the issue:
> > > 
> > > https://lore.kernel.org/linux-block/bc5fa941-3b7c-f28e-dd46-1a1d6e5c40a8@kernel.dk/T/#t
> > 
> > Thanks, I'll test your patch with my setup.
> 
> I've seen no hangs over past ~24 hours with patch above.
> 
> Thanks,
> Jan

fyi, in case you see sporadic I/O hangs, usually while running LTP tests
that make use of loop device with recent upstream kernels:
  https://lore.kernel.org/linux-block/1929570063.6965184.1596736053281.JavaMail.zimbra@redhat.com/