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SubjectRe: [PATCH v2 00/12] btrfs: add zstd compression level support
On Tue, Feb 05, 2019 at 05:51:13PM +0100, David Sterba wrote:
> On Tue, Feb 05, 2019 at 11:30:12AM -0500, Dennis Zhou wrote:
> > > > > Something is wrong, the patchset on top of 5.0-rc5 hangs in test
> > > > > btrfs/007, without a stacktrace. V1 was fine and I double checked that
> > > > > rc5 itself is fine.
> > > >
> > > > Hmmm, well that's awkward. I ran xfstests and that test passed on my
> > > > machine. I'll figure out the delta and submit a v3. Thanks David!
> > >
> > > It failed on a VM and 2 other physical machines, so it's not somethig
> > > related to the testing setup.
> >
> > Oh, I wasn't alluding to that. I'm more that sure it's my fault
> > somewhere along the line.
>
> Hang on, it's probably caused by fstests, as fssum is busy waiting
> somewhere, so it's not even kernel code.
>
> fstests a4235f29f780b15d9e87c0f2446a53b9e69c5e2d -- ok
> fstests 6d17c9076fe9d97d2411e5909e6b255e5e721fc3 (master) -- hangs

Git bisect points to

commit 04b405fa1f8d0cacde489f3d1c8771dfe7a34dc0
Author: Zorro Lang <zlang@redhat.com>
Date: Wed Jan 23 15:34:55 2019 +0800

common/dump: disable splice from FSSTRESS_AVOID

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