From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id D239DC4708D for ; Wed, 7 Dec 2022 22:20:15 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 6AA5B8E0003; Wed, 7 Dec 2022 17:20:15 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 65A138E0001; Wed, 7 Dec 2022 17:20:15 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 56FC88E0003; Wed, 7 Dec 2022 17:20:15 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 48B798E0001 for ; Wed, 7 Dec 2022 17:20:15 -0500 (EST) Received: from smtpin26.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 0AC751C67CE for ; Wed, 7 Dec 2022 22:20:15 +0000 (UTC) X-FDA: 80216929590.26.E749971 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by imf09.hostedemail.com (Postfix) with ESMTP id 46D0014000F for ; Wed, 7 Dec 2022 22:20:13 +0000 (UTC) Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=bjUZQGYS; spf=pass (imf09.hostedemail.com: domain of akpm@linux-foundation.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1670451613; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=HIJwD8qYPy4FMgIDbwat+BJHieoI+QgwNwtfK7VSlRU=; b=XlwUQNeZZ68fuAbQJk+kyySL1uKMFUVwtTSdRBC8BtF7FFiaqqwJiAH/3t3QGxqtRuOFr2 cPy34aiQ4lzLHoUALMDoDY8iodG3EVUnll6Zm3EwtSmShy1wMIGFmnBxJt8g47JLMhs4wr kryIb7s3RbsJcZKD/Cl2aXTTL9dmb5U= ARC-Authentication-Results: i=1; imf09.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=bjUZQGYS; spf=pass (imf09.hostedemail.com: domain of akpm@linux-foundation.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1670451613; a=rsa-sha256; cv=none; b=uOGWOEkV6Nrbzm+apfH0hgv3SfXHxUB0O2ZVK759YZ1mF55QAaouSjjfXlZ0gGUGBaB3sH Zvw8WxxFe5s8/ObzXbElg7GHIsssSdTzK7fjl5a7aM3xhjK5ssqYcNiryr5wsuqmRE5a15 9T/ffg1TDPXAMjlsO33EnnuEa2baroo= Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 56D2DB8218E; Wed, 7 Dec 2022 22:20:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 71D60C433C1; Wed, 7 Dec 2022 22:20:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1670451609; bh=p2z6S6z2YCWdPDkYxobih1tXJlCEaFlC1U59vvIde+E=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=bjUZQGYSTzRCdEGZk0t4alqFaoJYIgJQnNMU8BnrBOZg9EfxPOjTIrvOg2ZiszRXR ZR6uKWBUXXy56p2epTbCvkTpQo2c6vLSQFqED4pM+ScYoP8jgiLsMb+9smi3OK9lre r+gM3gbR5zbbq93+AhlNZxFbu6mGj9iFi5ir6I/E= Date: Wed, 7 Dec 2022 14:20:08 -0800 From: Andrew Morton To: Linus Torvalds Cc: "Huang, Ying" , kernel test robot , oe-lkp@lists.linux.dev, lkp@intel.com, Johannes Weiner , Hugh Dickins , Nadav Amit , Linux Memory Management List , linux-arch@vger.kernel.org, feng.tang@intel.com, zhengjun.xing@linux.intel.com, fengwei.yin@intel.com Subject: Re: [linux-next:master] [mm] 5df397dec7: will-it-scale.per_thread_ops -53.3% regression Message-Id: <20221207142008.e7251ad9f042ff2e89f4e866@linux-foundation.org> In-Reply-To: References: <202212051534.852804af-yujie.liu@intel.com> <87ilipffws.fsf@yhuang6-desk2.ccr.corp.intel.com> <878rjj22mz.fsf@yhuang6-desk2.ccr.corp.intel.com> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 46D0014000F X-Stat-Signature: 58rxn1qn69uhm17xm3oehh6tas6it4d6 X-Rspam-User: X-HE-Tag: 1670451613-936190 X-HE-Meta: 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 TVXWTeCW xyPC0n2RdgDRuzPMzcMnZee2CBoC8o/hCOQHto7CWEopWrC1219Ot6zFxlU8hDfEBoEvK4peza8o9pRvl9WhJj9Uod4AWQYwovD24/A5JxuYaP2wo+CIOq8tCwKDB2zQpE9cLH+RHuzjSfalf121LS+3lHFrWulzgNwslHgSbZudnnsu6uvVxPsunPu61KWuoJbG4 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 Wed, 7 Dec 2022 12:17:47 -0800 Linus Torvalds wrote: > Andrew, here's the patch with a proper commit message. Note that my > commit message contains the SHA1 of the original patch both in the > explanation and in a "Fixes:" line, which I think is fine for the > "mm-stable" branch that the original patch is in. > > But if you end up rebasing that mm-stable branch, then I'd ask you to > either remove/update those commit hashes, or just fold this fix into > the original one. Ok? Sure. mm-stable is supposed to be non-rebasing. I've snuck in a rebase a couple of times early in -rc windows, but a rebase at -rc8 would require quite a calamity.