From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9068628A73B for ; Mon, 30 Jun 2025 13:00:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751288443; cv=none; b=myBQqbWtz1mqrl0MvLNSzny7v0Gbr3OgLQpTVlKpfWOI07exJbpUvPzv7NfwHaJTsfBmuBToDo5pslR7n/D2k/jcaFI1aQJmxkKDWxeS4+4sassGkZ39evpAwUwKip+l1RVnOcVT/ld6kjiC/NIcv/iyZOZbrbWDFaJFd95G/x4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751288443; c=relaxed/simple; bh=QFR4ekfQkxloQewE0nsmyAbq1SFLKM7czL9sZhql/lw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JMFTrnCpIZX0dHfsML8Quyl3kjtTIeLE7rp62/xXXp48SJdD7m3uC17145eXKTbxEoBMAM1P0bwIiVlZh9RpohW5JCRRPGMgIYYSlLAdiXWT/9ifThLBTDclTPP6MLoezdrUpx5svI8KdJxgF9IuluwpdVAZOIGXTHMlrFlgXvY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=VpOjQWow; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="VpOjQWow" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1751288440; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=G4HyaliWLgvplqkgqKCCNJ5/P2ZKVlm1Wsjs2FxXnxE=; b=VpOjQWowNH3wrbLQALDeozUxYZhyuf8GWkRcb5RWigCzVJH/iZzA3RsnWy+L9vgtRroQip d3ghdLle65/cn7JPb8LFflO/G04xReiE4pCsqoPFOvFDAycZ6uQACSVR7MKy8EF3LUwDcn FbB26tWFmL3Ip41AsNVi6J6kkDewiUs= Received: from mail-wr1-f71.google.com (mail-wr1-f71.google.com [209.85.221.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-490-n9AshebZN9WT51K3maVHpQ-1; Mon, 30 Jun 2025 09:00:39 -0400 X-MC-Unique: n9AshebZN9WT51K3maVHpQ-1 X-Mimecast-MFC-AGG-ID: n9AshebZN9WT51K3maVHpQ_1751288438 Received: by mail-wr1-f71.google.com with SMTP id ffacd0b85a97d-3a4f6ba526eso1305137f8f.1 for ; Mon, 30 Jun 2025 06:00:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751288438; x=1751893238; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=G4HyaliWLgvplqkgqKCCNJ5/P2ZKVlm1Wsjs2FxXnxE=; b=VQvtVCgg7Ll1ANh6OGM/6dVV4S2jJoufd0tu79wUjNePlR7FJ5GWn+AnVbRLT5KDOf hWM1WDvbNQ5YA8HtibX1noFaob0mQ+HuOz6x/UQmgZ4evuzE7uKBrpVgng4uPkBS4rN/ ne4Mi0yZ1MFYja+RrptZ1biLDdhZx+kABO/zLkzqqNU8/MX4H1ulCu7xeFYiApgClhtg /EeuTqCl8OwlzKfR45x7vWSxDwoOSl8piy/8bfQyy1RPDpfNsjZAEy+7PiF16bXo59FV 2lnY+TCTtUq9bBd6ScPHh8LljEqUTIH8h5dKS154G80+r3nV/7GDy4WCKYkb/2YNTedj sCwQ== X-Forwarded-Encrypted: i=1; AJvYcCUYaeKLZ+O7dd1c2QWbRNXBg7QVpINLnSV0hzFgLRsCyUKEgjeVQiw7aZlIOghglAS5PsoXMPMHRNg=@vger.kernel.org X-Gm-Message-State: AOJu0Yw+ygFa+PmPpLgFmSXhnBniU2HYX2CU0fBTNwaxNI4svblHXfsj fihNHj1/qgQA9xmy/qltd1uaiSRJYUj7xNHuBFDVwIEesUCVfWY/QMghC3vbCIGxgQJLdHAK4Ay Kpi7p81J7Dz7MRgK7hiipcCTc6K5+UaqDAHZoIdLQAqXijsPb3dbyTSAAb3tEbw== X-Gm-Gg: ASbGncsS+5JMhTFm9CayktzvYEv4QbeedcX1zQol1kG6H4LgOEtTH0tyjXgu/vE5Y4f F8HQwR5FznntHV4JSZ5sOTs8HDqOiT06fMEy6fue47k8a2Shli3VZRKGKaGGyAOvkSsj9ab0YB2 jP8UMxVzQOGJ3H7o88yWnFWJRx4KAVOvpzGzauqjBThSAWidhIpC3CbDs4zyN9EiPPxCgPp1syE wMKZI0UOSSEBbr7rKetUfK84nKIqKfDRtaS42tr37wY5J4GCpji1k0Q8GbeuVlucIdVCeJ7dteA m22IdHONM66jrenHTb+Fj+jdGwG196g2vtIy6nDZljMwkoI6w0EUiFAEosB416vtJqfs7PBkNd6 WG0BXJ6U= X-Received: by 2002:adf:b649:0:b0:3a4:cf40:ff37 with SMTP id ffacd0b85a97d-3a8f45494cdmr9830786f8f.6.1751288437425; Mon, 30 Jun 2025 06:00:37 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFEehlYPXkAQhWmsU6NKWbFkXt51tuHaEnt5gEo+HlKa0FWalrdKbSodH+fk72qwn9YuXcO6g== X-Received: by 2002:adf:b649:0:b0:3a4:cf40:ff37 with SMTP id ffacd0b85a97d-3a8f45494cdmr9830683f8f.6.1751288436787; Mon, 30 Jun 2025 06:00:36 -0700 (PDT) Received: from localhost (p200300d82f40b30053f7d260aff47256.dip0.t-ipconnect.de. [2003:d8:2f40:b300:53f7:d260:aff4:7256]) by smtp.gmail.com with UTF8SMTPSA id ffacd0b85a97d-3a892e5b2a7sm10408982f8f.69.2025.06.30.06.00.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 30 Jun 2025 06:00:36 -0700 (PDT) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, linux-doc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, virtualization@lists.linux.dev, linux-fsdevel@vger.kernel.org, David Hildenbrand , Andrew Morton , Jonathan Corbet , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Jerrin Shaji George , Arnd Bergmann , Greg Kroah-Hartman , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?UTF-8?q?Eugenio=20P=C3=A9rez?= , Alexander Viro , Christian Brauner , Jan Kara , Zi Yan , Matthew Brost , Joshua Hahn , Rakie Kim , Byungchul Park , Gregory Price , Ying Huang , Alistair Popple , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , "Matthew Wilcox (Oracle)" , Minchan Kim , Sergey Senozhatsky , Brendan Jackman , Johannes Weiner , Jason Gunthorpe , John Hubbard , Peter Xu , Xu Xin , Chengming Zhou , Miaohe Lin , Naoya Horiguchi , Oscar Salvador , Rik van Riel , Harry Yoo , Qi Zheng , Shakeel Butt Subject: [PATCH v1 08/29] mm/migrate: rename putback_movable_folio() to putback_movable_ops_page() Date: Mon, 30 Jun 2025 14:59:49 +0200 Message-ID: <20250630130011.330477-9-david@redhat.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250630130011.330477-1-david@redhat.com> References: <20250630130011.330477-1-david@redhat.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit ... and factor the complete handling of movable_ops pages out. Convert it similar to isolate_movable_ops_page(). While at it, convert the VM_BUG_ON_FOLIO() into a VM_WARN_ON_PAGE(). Signed-off-by: David Hildenbrand --- mm/migrate.c | 37 ++++++++++++++++++++++++------------- 1 file changed, 24 insertions(+), 13 deletions(-) diff --git a/mm/migrate.c b/mm/migrate.c index d4b4a7eefb6bd..d97f7cd137e63 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -133,12 +133,30 @@ bool isolate_movable_ops_page(struct page *page, isolate_mode_t mode) return false; } -static void putback_movable_folio(struct folio *folio) +/** + * putback_movable_ops_page - putback an isolated movable_ops page + * @page: The isolated page. + * + * Putback an isolated movable_ops page. + * + * After the page was putback, it might get freed instantly. + */ +static void putback_movable_ops_page(struct page *page) { - const struct movable_operations *mops = folio_movable_ops(folio); - - mops->putback_page(&folio->page); - folio_clear_isolated(folio); + /* + * TODO: these pages will not be folios in the future. All + * folio dependencies will have to be removed. + */ + struct folio *folio = page_folio(page); + + VM_WARN_ON_ONCE_PAGE(!PageIsolated(page), page); + folio_lock(folio); + /* If the page was released by it's owner, there is nothing to do. */ + if (PageMovable(page)) + page_movable_ops(page)->putback_page(page); + ClearPageIsolated(page); + folio_unlock(folio); + folio_put(folio); } /* @@ -166,14 +184,7 @@ void putback_movable_pages(struct list_head *l) * have PAGE_MAPPING_MOVABLE. */ if (unlikely(__folio_test_movable(folio))) { - VM_BUG_ON_FOLIO(!folio_test_isolated(folio), folio); - folio_lock(folio); - if (folio_test_movable(folio)) - putback_movable_folio(folio); - else - folio_clear_isolated(folio); - folio_unlock(folio); - folio_put(folio); + putback_movable_ops_page(&folio->page); } else { node_stat_mod_folio(folio, NR_ISOLATED_ANON + folio_is_file_lru(folio), -folio_nr_pages(folio)); -- 2.49.0