Re: [PATCH 0/3] btrfs: zoned: fix zoned extent allocator

[Shinichiro Kawasaki <shinichiro.kawasaki@wdc.com>]

On Dec 08, 2021 / 17:18, David Sterba wrote:
> On Wed, Dec 08, 2021 at 12:35:46AM +0900, Naohiro Aota wrote:
> > There are several reports of hung_task on btrfs recently.
> > 
> > - https://github.com/naota/linux/issues/59
> > - https://lore.kernel.org/linux-btrfs/CAJCQCtR=jztS3P34U_iUNoBodExHcud44OQ8oe4Jn3TK=1yFNw@mail.gmail.com/T/

(snip)

> > While we are debugging this issue, we found some faulty behaviors on
> > the zoned extent allocator. It is not the root cause of the hung as we
> > see a similar report also on a regular btrfs. But, it looks like that
> > early -ENOSPC is, at least, making the hung to happen often.
> > 
> > So, this series fixes the faulty behaviors of the zoned extent
> > allocator.
> > 
> > Patch 1 fixes a case when allocation fails in a dedicated block group.
> > 
> > Patches 2 and 3 fix the chunk allocation condition for zoned
> > allocator, so that it won't block a possible chunk allocation.
> > 
> > Naohiro Aota (3):
> >   btrfs: zoned: unset dedicated block group on allocation failure
> >   btrfs: add extent allocator hook to decide to allocate chunk or not
> >   btrfs: zoned: fix chunk allocation condition for zoned allocator
> 
> All seem to be relevant for 5.16-rc so I'll add them to misc-next now to
> give it some testing, pull request next week. Thanks.

Hello David, thanks for your maintainer-ship always.

When I run my test set for zoned btrfs configuration, I keep on observing the
issue that Naohiro addressed with the three patches. The patches are not yet
merged to 5.16-rc7. Can I expect they get merged to rc8?

-- 
Best Regards,
Shin'ichiro Kawasaki