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a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1693126375; bh=TMfQl3Pz+V2rPjEjmQALnP4xXEsGHixS96zlrjaSDkw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=tcuXk0cHMQUqSoJaQxUN0GjNbCw6l/tR9z3vAAx/SvsyRN24m121+4Mm7dIoTxW7v 5fK4XWmIcYyx+QsW/8XtADuugqrtXZ71fza0xnva4BDTHxFklL7gQjp/XcRgtoDm7R vgblHvZGSuNaISMjxJ6GfdIPZq+No+VdCEJ3gtTE= Date: Sun, 27 Aug 2023 10:52:52 +0200 From: Greg KH To: Saeed Mirzamohammadi Cc: "# v4 . 16+" , Andrew Morton , Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Luis Chamberlain , Kees Cook , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" Subject: Re: [PATCH 5.4 0/1] mm: allow a controlled amount of unfairness in the page lock Message-ID: <2023082742-mourner-amaze-7ff9@gregkh> References: <20230821222547.483583-1-saeed.mirzamohammadi@oracle.com> <2023082248-parting-backed-2ab0@gregkh> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: 103DC180002 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: mco7ts5i6gt1wu97u16grb3rhcx7zeaw X-HE-Tag: 1693126376-734305 X-HE-Meta: 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 6//11+Zb 4gX3Pn+Gl8SaGX+av8l5d7ZCmsB4NAH60UfkezoNGQG0/xtFZ+qx35yFqkNNLiSr/3wphQBqoc7zy4L5BSnt/EyO3govXaoQ9tQMOu8IkIPN4USkX+opUEUShjS00jTnJ+/z+IInRqZKzNu9XRiKLM2AQa7F7sp+y/o3CqPkNDc8fbE4M0zkvcWQ8RjjKPEP+KRhYdaEWYlMEFfgO1SR2xFc5NFftDKanL+FZfPGCnQeKw1CobyaHaBYZhZlKTDIXFa+siOLlu+FmMTMEuZff3jhzuD0pnTiWactP5mYTmaXM50E/4zm9/MRfTfMjZb7dt+Uf6wzqqz2rfGAS4Z5yOUBX8PV4JwSiQzlVL+4HDhN0yYTFKxH2yPLbB7UgnJv3nbtNT12wHv0DqIt2tFLoY3cpiKQrfrz8+S2OKr+/MR7qsaXsBFS8AL7NUd+ah2PHFgQO4onmrFrIa00X1HwhQTIxL1IBgoFWDuyYIoog0ctyzZfT6hasS5cKRmh0O2kwtdNBlukawMBvQVcCeI0Kil9u2kNq3n0FSwTr 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 Tue, Aug 22, 2023 at 05:20:50PM +0000, Saeed Mirzamohammadi wrote: > > > > On Aug 22, 2023, at 12:08 AM, Greg KH wrote: > > > > On Mon, Aug 21, 2023 at 03:25:45PM -0700, Saeed Mirzamohammadi wrote: > >> We observed a 35% of regression running phoronix pts/ramspeed and also 16% > >> with unixbench. Regression is caused by the following commit: > >> dd0f194cfeb5 | mm: rewrite wait_on_page_bit_common() logic > > > > That is not a valid git id in Linus's or in the linux-stable repo that I > > can see. Are you sure that it is correct? > > Sorry for the incorrect sha. Here are the correct ones: > > kernel_dot_org/linux-stable.git linux-5.4.y - c32ab1c1959a > kernel_dot_org/torvalds_linux.git master - 2a9127fcf229 > kernel_dot_org/linux-stable.git master - 2a9127fcf229 > --- > subject : mm: rewrite wait_on_page_bit_common() logic > author : torvalds@linux-foundation.org > author date : 2020-07-23 17:16:49 Thanks, now queued up. greg k-h