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Fri, 27 Oct 2023 07:46:01 -0700 (PDT) Message-ID: <84a42959-e15f-4128-ae2f-df9650879556@kernel.dk> Date: Fri, 27 Oct 2023 08:46:00 -0600 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: task hung in ext4_fallocate #2 Content-Language: en-US To: Theodore Ts'o Cc: Andres Freund , Dave Chinner , Thorsten Leemhuis , Shreeya Patel , linux-ext4@vger.kernel.org, =?UTF-8?Q?Ricardo_Ca=C3=B1uelo?= , gustavo.padovan@collabora.com, zsm@google.com, garrick@google.com, Linux regressions mailing list , io-uring@vger.kernel.org References: <20231017033725.r6pfo5a4ayqisct7@awork3.anarazel.de> <20231018004335.GA593012@mit.edu> <20231018025009.ulkykpefwdgpfvzf@awork3.anarazel.de> <74921cba-6237-4303-bb4c-baa22aaf497b@kernel.dk> <4ace2109-3d05-4ca0-b582-f7b8db88a0ca@kernel.dk> <20231025153135.kfnldzle3rglmfvp@awork3.anarazel.de> <20231025195539.GA2897448@mit.edu> From: Jens Axboe In-Reply-To: <20231025195539.GA2897448@mit.edu> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on howler.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (howler.vger.email [0.0.0.0]); Fri, 27 Oct 2023 07:46:13 -0700 (PDT) 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