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 39D7AC00A5A for ; Wed, 18 Jan 2023 01:00:40 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id CAAF46B0072; Tue, 17 Jan 2023 20:00:39 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id C5ACC6B0075; Tue, 17 Jan 2023 20:00:39 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B4A456B0078; Tue, 17 Jan 2023 20:00:39 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id A40D46B0072 for ; Tue, 17 Jan 2023 20:00:39 -0500 (EST) Received: from smtpin22.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 79282160960 for ; Wed, 18 Jan 2023 01:00:39 +0000 (UTC) X-FDA: 80366114598.22.EEFB221 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf22.hostedemail.com (Postfix) with ESMTP id E728FC0011 for ; Wed, 18 Jan 2023 01:00:37 +0000 (UTC) Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=FZ7kXWfN; spf=none (imf22.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1674003638; 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: in-reply-to:in-reply-to:references:references:dkim-signature; bh=B1/ebhkUYGZ6opiMxC5uXAuUoxAT0QnKaFHjZsBIcyc=; b=xzkFGpUB/qHxZSxyMma/+KJGNwJ3H3Z68vb5j3+CLp2sNCaEoUnSm+UTiZjAblXOyXjRqP A5g/0+2wlYSJGV6b9FDugLPSt4X+VbfFaNZfgUTzYRYexS2evcYo/Nnr+7vpBQlmdjwyGe wGGZsqVANa3RcX6t+QnnPH8jHBH0tNw= ARC-Authentication-Results: i=1; imf22.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=FZ7kXWfN; spf=none (imf22.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1674003638; a=rsa-sha256; cv=none; b=zSEcIjaGg5nD6hszcCQ1dT1vSMqf42kYRw6jA+58cYqgfSuGi4C7LjV39gIJ6lzNYflQ11 tD/AoO4oWnecvDL9+cbN909icE/sTX1Xso3WHzNWz4uSk1GSNeuyU52Aqy6HTt8k6yFIAF tYKXMGN1P2/jxYLyIizX+ZdyaCDYHjo= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=B1/ebhkUYGZ6opiMxC5uXAuUoxAT0QnKaFHjZsBIcyc=; b=FZ7kXWfN+N88S+4scUrAeVj22g hbT652X46XnRlozUXq2mpIhoPRAxwhW+1pSEEv559r8EPgFy4TBGYQdGijUcR2l2sjRZ227h8cFUZ XngNdqF9Lb+FPZiDo4xqHEQSJbKiuPplejpv3Wn/9SLeswxZ06EUmkACEMSgfC/y4kubqGSnQz124 U0XUTVQMbe4vJBs04bQylZLRoI7D5/SFTxVKsRxATW/qYcP3KIez66kRreR0/VQJJ5bnY+La+efb4 sZAXej/TmTN7+RPdWBCHwOu+OGoger6G1yQBuf2a1vt843/1AJM/Ezap1o78kdUyyw2sRDf5fsRfv dhuCOO/g==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pHwop-00AD6X-Mu; Wed, 18 Jan 2023 01:00:47 +0000 Date: Wed, 18 Jan 2023 01:00:47 +0000 From: Matthew Wilcox To: "T.J. Alumbaugh" Cc: Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-mm@google.com Subject: Re: [PATCH mm-unstable v1 1/7] mm: multi-gen LRU: section for working set protection Message-ID: References: <20230118001827.1040870-1-talumbau@google.com> <20230118001827.1040870-2-talumbau@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230118001827.1040870-2-talumbau@google.com> X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: E728FC0011 X-Rspam-User: X-Stat-Signature: amnkp4y6nmnyitr1f37zrman8zzm5613 X-HE-Tag: 1674003637-109429 X-HE-Meta: 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000601, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Jan 18, 2023 at 12:18:21AM +0000, T.J. Alumbaugh wrote: > +++ b/mm/vmscan.c > @@ -4475,6 +4475,10 @@ static bool try_to_inc_max_seq(struct lruvec *lruvec, unsigned long max_seq, > return true; > } > > +/****************************************************************************** > + * working set protection > + ******************************************************************************/ > + > static bool lruvec_is_sizable(struct lruvec *lruvec, struct scan_control *sc) We don't usually do this. Why do you want to?