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a=rsa-sha256; c=relaxed/relaxed; d=stgolabs.net; s=dreamhost; t=1727737320; bh=UZjevEb+aS9Z63T3PhLuFwnTl0m/XfMMUJJ9gK77NXk=; h=Date:From:To:Subject:Content-Type; b=aJ66WVtF5wadplucglcPzJTORrapS6eiZLyCsEngTYvMz+nBtMQoNKpasMjVPzM6i Wttxf1Q5Q6RXv381nD/ai2/g72lHZpMyJMe50DdyheTAinmfL7cyMLTVQL4er/2WxY gPK0z8nx8xUWqxo/0vREjwNRPOQ8LURXUSzS3hYjH5RmKKrLinXidPBpLQHtTeB6v2 AOGYuVmXJul9LcVI3bsGtEc9AMiXhCl9ltBiwdfHicMj8j58Ay7V4trpupd53cYnCI zhEYROi6hDS2QbzsQNi5LrKByKYi2qqsoe7NPj4FgUU1KIEniTMJJJZWctoNeVg/FC 33IUFFM4Lwtdg== Date: Mon, 30 Sep 2024 16:00:32 -0700 From: Davidlohr Bueso To: Matthew Wilcox , Linus Torvalds , Christian Theune , Dave Chinner , Chris Mason , Jens Axboe , linux-mm@kvack.org, "linux-xfs@vger.kernel.org" , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Daniel Dao , regressions@lists.linux.dev, regressions@leemhuis.info Subject: Re: Known and unfixed active data loss bug in MM + XFS with large folios since Dec 2021 (any kernel from 6.1 upwards) Message-ID: Mail-Followup-To: Matthew Wilcox , Linus Torvalds , Christian Theune , Dave Chinner , Chris Mason , Jens Axboe , linux-mm@kvack.org, "linux-xfs@vger.kernel.org" , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Daniel Dao , regressions@lists.linux.dev, regressions@leemhuis.info References: <02121707-E630-4E7E-837B-8F53B4C28721@flyingcircus.io> <295BE120-8BF4-41AE-A506-3D6B10965F2B@flyingcircus.io> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20240425 X-Stat-Signature: gej938wh37a4r8a8upwfskcdrffq9zss X-Rspamd-Queue-Id: 41E17C001D X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1727737321-809092 X-HE-Meta: U2FsdGVkX19cQaHGDBkYpRQzaV+JBQNb3ia2boiRRcI42oFpqL3Hvyqyay6ttc9RXEtDFSiJnyLLXiFzxh9R9fPZnnSnwuHpYMzFaS1A+ECWaT/LxIqWXwquBW9oePmuFm8GVo/HHhvWwxLiOQof8mtEyqVZyEN21p2KwjQs6W1sXstOLHgxERqPiXpP7m4mxgjmzifzj//QaCJ9DrMWZQnh+kIFYNyqRRkUg94zizCO8/aqepaQ+YCCNZnXmYo9azb9juq6QK0CCioCRxQ9FijNyJnjBYIcCRnYXjutYrf3L56XzcMswCkEkObtzVxmTVSq3UaRBI/sJ6nlDXOugrcbcYmICGoy1CXyEuol8C3E149VzjJVdK20S88jdbjD5Huc6uZsjWAswOKlofSc3obS53GjMLA252E5aELIOsinwI6zmxSJETEFnxs0TsJYXhz2ymdAg1JCZBP5pBMZzB0dit1x1SSzRDak1EShDn1zK8IUD/LIG4IJzU47Iwb7dn7PMlEkEfcBAf8YxekJm8iYppQKuXh2miU9/ftupiOFrU5soRSEhcR/20Vu2tRIj18NGi9s1V+Nq6Wiz7k69t/UYbuJKT62XG+MeHTQh9drbM7kzUvtW/XaM2eXO11zfshTGAqr89bzTOv7Q3tp8JsB1UpKKTKaedb65klqFvZDZm/w+UKOtO0k6u8ZHVFh1H/X4+uHGqqYQVHxiyqzRM/mwCGGpz8m0ofqg4Q0s0Xvin8Qk+uBOWdPRuSt8v6NxTlqhkihReIC91375MULOCW2H9+o5SctyyYY0Tajb4ZoSRjakQ0wpf1Q6kbAYKm3eIUM8NqyV8aUNb9fin/jQYy3jSuffQroN1No47x43W/cb+NqVaGPnjsR4ouSi7NT9GeE8zjB7FSk54ijmlSa3J8+Oi4LfWSRnabOhwLj2va07Vvd0Jx1pSQrBslak3BEDnSQC0UVyOEz+eyY/Oz 9jE6WJPs NmF2ePnUlGp6qq85XdJiJauwCXE6gshRVfnm6FAOd6bcJLNpfrSRvh/763zfRsesy/VarwfImk5LHcZUaNhVq3wezMDfkwuzYGHNHgh4pWowoh5aJi8DnJ3pH7aDGbcxeqDCOGhu1leuQQX2R/P6TsPWy9Z+Lnxl+PpTTgCra50eVKgF6OF0osX0ofPXwTsMl+OCzUTNMEVcJuO9MQjJaLUbnylK8hMWzjXWxUauJnbX4b6PCDWKLlaEYOt+Ti1A6gw0L2Elk84rtDytvE0msTVW9OurRhCUGO1Zt4gwEqHBW8vLKO2ihqhguhFoxNZDmsxytUxrndOTyvXs= X-Bogosity: Ham, tests=bogofilter, spamicity=0.199103, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, 30 Sep 2024, Davidlohr Bueso wrote:\n >Also, the last sentence in the description would need to be dropped. No never mind this, it is fine. I was mostly thinking about the pathological unbounded scenario which is removed, but after re-reading the description it is still valid.