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Fri, 05 Jun 2020 13:21:46 -0700 (PDT) Subject: Re: [PATCHSET v5 0/12] Add support for async buffered reads To: Andres Freund Cc: io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org References: <20200526195123.29053-1-axboe@kernel.dk> <20200604005916.niy2mejjcsx4sv6t@alap3.anarazel.de> <6eeff14f-befc-a5cc-08da-cb77f811fbdf@kernel.dk> <20200605202028.d57nklzpeolukni7@alap3.anarazel.de> From: Jens Axboe Message-ID: <34b47fac-c162-1a81-2829-965189fa5d3d@kernel.dk> Date: Fri, 5 Jun 2020 14:21:44 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <20200605202028.d57nklzpeolukni7@alap3.anarazel.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4D23D1802EC0F X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 6/5/20 2:20 PM, Andres Freund wrote: > Hi, > > On 2020-06-05 08:42:28 -0600, Jens Axboe wrote: >> Can you try with async-buffered.7? I've rebased it on a new mechanism, >> and doing something like what you describe above I haven't been able >> to trigger anything bad. I'd try your test case specifically, so do let >> know if it's something I can run. > > I tried my test on async-buffered.7?, and I get hangs very quickly after > starting. Unfortunately, I don't seem to get an OOPSs, not sure yet why. > > Let me know if my test triggers for you. > > I'll go and try to figure out why I don't see an oops... I'll try the reproducer! Thanks for testing. -- Jens Axboe