linux-ext4 - Re: task hung in ext4

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Message-ID: <84a42959-e15f-4128-ae2f-df9650879556@kernel.dk>
Date:   Fri, 27 Oct 2023 08:46:00 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Theodore Ts'o <tytso@....edu>
Cc:     Andres Freund <andres@...razel.de>,
        Dave Chinner <david@...morbit.com>,
        Thorsten Leemhuis <regressions@...mhuis.info>,
        Shreeya Patel <shreeya.patel@...labora.com>,
        linux-ext4@...r.kernel.org,
        Ricardo Cañuelo <ricardo.canuelo@...labora.com>,
        gustavo.padovan@...labora.com, zsm@...gle.com, garrick@...gle.com,
        Linux regressions mailing list <regressions@...ts.linux.dev>,
        io-uring@...r.kernel.org
Subject: Re: task hung in ext4_fallocate #2

On 10/25/23 1:55 PM, Theodore Ts'o wrote:
> On Wed, Oct 25, 2023 at 09:36:01AM -0600, Jens Axboe wrote:
>>
>> FWIW, I wrote a small test case which does seem to trigger it very fast,
>> as expected:
> 
> Great!  I was about to ask if we had an easy reproducer.  Any chance
> you can package this up as an test in xfstests?  Or would you like
> some help with that?

I think it's good to convert to a test case as-is, would just need to
loop X iterations or something rather than go forever. If you want to
run with it, please do!

-- 
Jens Axboe