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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , "Matthew Wilcox (Oracle)" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH] Revert "ptdesc: remove references to folios from __pagetable_ctor() and pagetable_dtor()" Message-ID: References: <20260225002434.2953895-1-axelrasmussen@google.com> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260225002434.2953895-1-axelrasmussen@google.com> X-DKIM: signer='cmpxchg.org' status='pass' reason='' DKIMCheck: Server passes DKIM test, 0 Spam score X-Spam-Score: 0.4 (/) X-Spam-Report: Spam detection software, running on the system "witcher.mxrouting.net", has performed the tests listed below against this email. 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[104.64.211.4 listed in list.dnswl.org] 1.5 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level mail domains are different -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 URIBL_ZEN_BLOCKED_OPENDNS ADMINISTRATOR NOTICE: The query to zen.spamhaus.org was blocked due to usage of an open resolver. See https://www.spamhaus.org/returnc/pub/ [URIs: cmpxchg.org] -1.0 MAILING_LIST_MULTI Multiple indicators imply a widely-seen list manager SpamTally: Final spam score: 4 On Tue, Feb 24, 2026 at 04:24:34PM -0800, Axel Rasmussen wrote: > This change swapped out mod_node_page_state for lruvec_stat_add_folio. > But, these two APIs are not interchangeable: the lruvec version also > increments memcg stats, in addition to "global" pgdat stats. > > So after this change, the "pagetables" memcg stat in memory.stat always > yields "0", which is a userspace visible regression. > > I tried to look for a refactor where we add a variant of > lruvec_stat_mod_folio which takes a pgdat and a memcg instead of a > folio, to try to adhere to the spirit of the original patch. But at the > end of the day this just means we have to call > folio_memcg(ptdesc_folio(ptdesc)) anyway, which doesn't really > accomplish much. > > This regression is visible in master as well as 6.18 stable, so CC > stable too. > > Fixes: f0c92726e89f ("ptdesc: remove references to folios from __pagetable_ctor() and pagetable_dtor()") > Cc: stable@vger.kernel.org > Signed-off-by: Axel Rasmussen Acked-by: Johannes Weiner Willy's cleanup proposal looks good to me too, but this is more straight forward to backport to stable. From - Wed Feb 25 19:40:24 2026 X-Mozilla-Status: 0001 X-Mozilla-Status2: 00000000 Return-Path: Delivered-To: hi@josie.lol Received: from witcher.mxrouting.net by witcher.mxrouting.net with LMTP id yEFYJSNQn2lUaCsAYBR5ng (envelope-from ) for ; Wed, 25 Feb 2026 19:40:19 +0000 Return-path: ) for ; Sat, 03 Jan 2026 12:18:15 +0000 Return-path: Envelope-to: github@josie.lol Delivery-date: Sat, 03 Jan 2026 12:18:16 +0000 Received: from out-28.smtp.github.com ([192.30.252.211]) by witcher.mxrouting.net with esmtps (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.98) (envelope-from ) id 1vc0aF-00000004Xih-3Vm0 for github@josie.lol; Sat, 03 Jan 2026 12:18:15 +0000 Received: from github.com (hubbernetes-node-0f6c2b1.ash1-iad.github.net [10.56.167.41]) by smtp.github.com (Postfix) with ESMTPA id 63C1A9202F6 for ; Sat, 3 Jan 2026 04:18:15 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=github.com; s=pf2023; t=1767442695; bh=XqMuxbJ6898eGqnrXFF9RjW6SGsBDrw3WVTyVTFILoo=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:List-Unsubscribe-Post: From; b=ITXmsyEAjjBZfG3G1A87NZsZEFxELVw9+oHS6RWE/j44sZgQy1+lrjdaqUPF2wbnb zF+XzoiVr0I7+4s07jMHriCFr9pOYn9fg7zf6ztBQptW3VBNrF79IOI0JJuo0TLQqI i4aNegnCeZPtHtecoeEUh60qOMAzyTVDCUl8aclM= Date: Sat, 03 Jan 2026 04:18:15 -0800 From: Mikkel Quist Voorma Reply-To: Morganamilo/paru To: Morganamilo/paru Cc: Subscribed Message-ID: In-Reply-To: References: Subject: Re: [Morganamilo/paru] chore(Cargo.toml): Support for libalpm 16, srcinfo 2.0.0 (PR #1488) Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="--==_mimepart_6959090761524_c410d08826ef"; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: list X-GitHub-Sender: MikkelGaming X-GitHub-Recipient: pfeifferj X-GitHub-Reason: subscribed List-ID: Morganamilo/paru List-Archive: https://github.com/Morganamilo/paru List-Post: List-Unsubscribe: , List-Unsubscribe-Post: List-Unsubscribe=One-Click X-GitHub-Notify-Platform: newsies X-Auto-Response-Suppress: All destinations: github@josie.lol X-GitHub-Recipient-Address: github@josie.lol X-DKIM: signer='github.com' status='pass' reason='' DKIMCheck: Server passes DKIM test, 0 Spam score X-Spam-Score: 1.0 (+) X-Spam-Report: Spam detection software, running on the system "witcher.mxrouting.net", has performed the tests listed below against this email. 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[192.30.252.211 listed in list.dnswl.org] 0.7 HTML_IMAGE_ONLY_20 BODY: HTML: images with 1600-2000 bytes of words 1.5 HTML_MESSAGE BODY: HTML included in message -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [192.30.252.211 listed in wl.mailspike.net] 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders 0.0 T_KAM_HTML_FONT_INVALID Test for Invalidly Named or Formatted Colors in HTML -1.0 MAILING_LIST_MULTI Multiple indicators imply a widely-seen list manager -0.0 DKIMWL_WL_HIGH DKIMwl.org - High trust sender SpamTally: Final spam score: 10 ----==_mimepart_6959090761524_c410d08826ef Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit @MikkelGaming approved this pull request. Compiles and works as expected. Very nice. -- Reply to this email directly or view it on GitHub: https://github.com/Morganamilo/paru/pull/1488#pullrequestreview-3624320259 You are receiving this because you are subscribed to this thread. Message ID: ----==_mimepart_6959090761524_c410d08826ef Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

@MikkelGaming approved this pull request.

Compiles and works as expected.

Very nice.

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