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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 56F6DC55184 for ; Tue, 4 Aug 2026 15:12:44 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id BB01D6B0108; Tue, 4 Aug 2026 11:12:40 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B12896B0109; Tue, 4 Aug 2026 11:12:40 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A500C6B010B; Tue, 4 Aug 2026 11:12:40 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 77E156B0108 for ; Tue, 4 Aug 2026 11:12:40 -0400 (EDT) Received: from smtpin14.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay01.hostedemail.com (Postfix) with ESMTP id E10561C0102 for ; Tue, 4 Aug 2026 15:12:39 +0000 (UTC) X-FDA: 85063928838.14.022F1C9 Received: from mail-pj1-f43.google.com (mail-pj1-f43.google.com [209.85.216.43]) by imf29.hostedemail.com (Postfix) with ESMTP id 2A827120010 for ; Tue, 4 Aug 2026 15:12:38 +0000 (UTC) Authentication-Results: imf29.hostedemail.com; dkim=pass header.d=gmail.com header.s=20251104 header.b=sNNMoak+; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (imf29.hostedemail.com: domain of ekffu200098@gmail.com designates 209.85.216.43 as permitted sender) smtp.mailfrom=ekffu200098@gmail.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1785856358; 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-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=m+EEI8OmXFAV5iwPGEDdFyR14Opwttq92Jr4Rn38Aqo=; b=vn+ifu1PRVioJbAOH+FliNqSYnFIsenAn1BqVe+d/YibtYKlWcVKAPvwcorkpeKeJuZwse yQj0rerrfod9XMt7EcUewvH1Ni0XPSi19LD8W7BR2WHTwqqD2YB2P50w/jcP/nVM/DEMaw 6Er23y2uaSRZ2I2emywqeAHqRbny6gY= ARC-Authentication-Results: i=1; imf29.hostedemail.com; dkim=pass header.d=gmail.com header.s=20251104 header.b=sNNMoak+; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (imf29.hostedemail.com: domain of ekffu200098@gmail.com designates 209.85.216.43 as permitted sender) smtp.mailfrom=ekffu200098@gmail.com ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1785856358; b=gxqhDqf0bBHZ5I7Vpvd77i+sqhwxMVvjgz9Ppt35+GG/Ai3ZcnJyP2HbUF5JZZ74Wd9QK9 h8cLJEOD1ByDis5/MKb94+IBTUXkDfY6XTVWLl+7Jr0UI0knXBHaHhaNWarCyHnh4vx4Ch yBCn7nV+MoQu3ATxuIQETMpStkO13GI= Received: by mail-pj1-f43.google.com with SMTP id 98e67ed59e1d1-38fdeaed181so2265373a91.1 for ; Tue, 04 Aug 2026 08:12:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1785856357; x=1786461157; darn=kvack.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=m+EEI8OmXFAV5iwPGEDdFyR14Opwttq92Jr4Rn38Aqo=; b=sNNMoak+4zbsJDObyLf4BT01hgbRmVI8D8FvSskt+pqZLQ6r1AJYCdc5QpNSoNQqxG RVcakyV6AtluJ4Z2FH1olKRnymCxw9bRSnbLaN67DffRKcr2a3WQkRV6i3m9/qCeIFsj 0RJMgtiM1QgeDqPHZ9n49WNRzWG71lbbmCXOqwldAxEVNLRgBhMLQOIpO/UIyhHFp22g XsZrt7HVAbgtVh5T1srh46Ce09kbMabIHYNJM4vAqxTaRovvLGcGpAbf+HG3HZaIYeSV zJ97fCnVhzmYNiOZMeXY339wXAKoBUauymNJRWEJjRWHBRErRxaTVUZ4dPu4cGU4Urf5 RhoQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785856357; x=1786461157; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=m+EEI8OmXFAV5iwPGEDdFyR14Opwttq92Jr4Rn38Aqo=; b=I2pwM+/clYregdGO6o+BCqIzE2gJtv6VEDhd8F5MrES3Vtads7HtZeIWrX53/Kz+pn 3BMvl2C+d+OUbmuCZqbf7Etn1CIRrR/titsdH0wd4uXr6deUoDH8xvVp2sLjLC9OdC9S VIcju08wwJTL9x36iI5FCDT9VvxX92loJJca+x+PGzkdJPHVhnjUuvODeI/vPxed5D5S NDkrPmQZGe0wCc33+qdVGSK8Qm8ZcC4D/2vvARy5fW9sjI+GF3Dmyfc5BSDc+sr72IJr gyeUX5qdZU9tunf2LR+e9KnGI3AWxxW/bMyCnU1bAzUoFHRW2wKnIBhw6/rig73iSGQL Vwdw== X-Forwarded-Encrypted: i=1; AHgh+Rq3RWiTS7lFKA+I3rkl7TlaI4srpdP03al1f4qZJIujM20MNkY5Po0O2zzBEN/w9HPcgqahsZFeSw==@kvack.org X-Gm-Message-State: AOJu0YzpDDhaMw8YGpyFHZYrWSEw6giBIHaN5UsusIRoSJIUcslR3Fg3 sljt42OkuRchQfG/uzA/LUoPzsMWIH+eKlfN4kqdN7WfjS6l1fe/13F2 X-Gm-Gg: AR+sD13rPMBCV55FKN0I2MV3ke7V4cb0Z4jyzfGE/e2zkcfUHgA25Z6dmVSKsCcyHvU f4DOLA/WgExiA0oFMkrebEIPYK0KDBF+dUqyaCPoaOWUdlycCW4UDSTSetl5xJ6AEiEuuQZY/g/ ZC1jDItL45dDuOnUSr2jClWoh98ixhrgf+tUlIru7aQxiFUI+l67GKVCGHVpL8wJGF+WDShlejZ D6qaye9Uz/QOIGdKuUbper2LawZ8jGA5wI+LWkmehYlT065AzPeRmakZhe408qA0dynSV2tA18H SAYiYtaTbSYYUaIOyIchEtd+OdLJP2oS2eTpqCemnW0jd4nG1DY69jQzw1RcHkdSnc+s9nj6mWF ATyHs+EtHUL3kOS1MngiNC/KKha04KmZ2YJTAEUnDPZ8u42p/0ReCx0aA+SDPNCN2Lr0IedwXVS sl3DQ1calcyzntbipvE1cffsazdXjsSjmJSQJi1cMVwRJljnF+o+9oTjQ= X-Received: by 2002:a17:902:e5c1:b0:2c9:d298:6c06 with SMTP id d9443c01a7336-2d0523fa272mr147650405ad.25.1785856356894; Tue, 04 Aug 2026 08:12:36 -0700 (PDT) Received: from ubuntu.. ([110.9.142.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2d0aa4d67dcsm9219905ad.70.2026.08.04.08.12.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Aug 2026 08:12:36 -0700 (PDT) From: Sang-Heon Jeon To: Andrew Morton , David Hildenbrand , Mike Rapoport , Vlastimil Babka Cc: Brendan Jackman , Johannes Weiner , "Liam R. Howlett" , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Lorenzo Stoakes , Michal Hocko , Suren Baghdasaryan , Zi Yan Subject: [PATCH v2 2/2] mm/page_ext: remove pgdat_page_ext_init() Date: Wed, 5 Aug 2026 00:11:42 +0900 Message-ID: <20260804151145.3419768-3-ekffu200098@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260804151145.3419768-1-ekffu200098@gmail.com> References: <20260804151145.3419768-1-ekffu200098@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: he31krchb5t9zsjxsoui3zt3g98so8s5 X-Rspam-User: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 2A827120010 X-HE-Tag: 1785856358-761895 X-HE-Meta: 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 1g0yGNfU DpmJM37OU3z0XlcCs7zX70a9kHuneGVfizm0gp4mv8rr7Pw8FV/bYxACTWTxP6WBZV470UmrObQUxUUzSHCOKW9rS9RIoUPc7Y9yKdIw5VOapi9CzaztcKLe+Qnt0LXM19WZDHzaCoo3hpbzixVwt+9xvO104B2RfPTwmF56N3IAzvFbMxz3gA7aYIxecg+pfaVWSuINuukh3RwLyu0v3g0Io2gTGEvZ9H/DBtJqhTsGBpqAE0sJKkfg+K2EsUOTzApC4S9jkD1ZETwuIUXP15+wRN75+Qcgy6vCsk87H6ahOLc9jZ96S4at5a4WZ6J9s0jLdZquzfqAIG6KMPHbw/hvzbxoaqDRW4Poyj4NL1RGjBoljOINNiaLVQNkZzxLdufVAfGVD1mjtogFWxybS+rosiZhUNlw5OYHxQZ5BcKZv0F2kHHy1L6QV9OjlVAQujqIv8IfYzj6Z5Qo= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: pgdat_page_ext_init() sets pgdat->node_page_ext to NULL only on FLATMEM. FLATMEM depends on !NUMA, so the pgdat is always the zero-initialized contig_page_data and the store has no effect. So remove the call site, the unused function and its declaration. No functional change. Signed-off-by: Sang-Heon Jeon --- include/linux/page_ext.h | 5 ----- mm/mm_init.c | 1 - mm/page_ext.c | 9 --------- 3 files changed, 15 deletions(-) diff --git a/include/linux/page_ext.h b/include/linux/page_ext.h index f23d4b218da0..79c53ec45dfa 100644 --- a/include/linux/page_ext.h +++ b/include/linux/page_ext.h @@ -55,7 +55,6 @@ struct page_ext { extern bool early_page_ext; extern unsigned long page_ext_size; -extern void pgdat_page_ext_init(struct pglist_data *pgdat); static inline bool early_page_ext_enabled(void) { @@ -202,10 +201,6 @@ static inline bool early_page_ext_enabled(void) return false; } -static inline void pgdat_page_ext_init(struct pglist_data *pgdat) -{ -} - static inline void page_ext_init(void) { } diff --git a/mm/mm_init.c b/mm/mm_init.c index 711f821f7b3c..e9c4204b73ad 100644 --- a/mm/mm_init.c +++ b/mm/mm_init.c @@ -1394,7 +1394,6 @@ static void __meminit pgdat_init_internals(struct pglist_data *pgdat) for (i = 0; i < NR_VMSCAN_THROTTLE; i++) init_waitqueue_head(&pgdat->reclaim_wait[i]); - pgdat_page_ext_init(pgdat); lruvec_init(&pgdat->__lruvec); } diff --git a/mm/page_ext.c b/mm/page_ext.c index e2e92bd27ebd..b679a8c1f7d7 100644 --- a/mm/page_ext.c +++ b/mm/page_ext.c @@ -164,11 +164,6 @@ void __init page_ext_init_flatmem_late(void) invoke_init_callbacks(); } -void __meminit pgdat_page_ext_init(struct pglist_data *pgdat) -{ - pgdat->node_page_ext = NULL; -} - static struct page_ext *lookup_page_ext(const struct page *page) { unsigned long pfn = page_to_pfn(page); @@ -494,10 +489,6 @@ void __init page_ext_init(void) panic("Out of memory"); } -void __meminit pgdat_page_ext_init(struct pglist_data *pgdat) -{ -} - #endif /** -- 2.43.0