From patchwork Wed Jan 4 21:14:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 1721504 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-cifs-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20210112 header.b=bjZkMxIP; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4NnMp46YkMz23fj for ; Thu, 5 Jan 2023 08:15:40 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240242AbjADVPI (ORCPT ); Wed, 4 Jan 2023 16:15:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57370 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240175AbjADVO6 (ORCPT ); Wed, 4 Jan 2023 16:14:58 -0500 Received: from mail-pj1-x102e.google.com (mail-pj1-x102e.google.com [IPv6:2607:f8b0:4864:20::102e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8F1851CFC3; Wed, 4 Jan 2023 13:14:57 -0800 (PST) Received: by mail-pj1-x102e.google.com with SMTP id o2so32016978pjh.4; Wed, 04 Jan 2023 13:14:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; 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; bh=Yo+m9KCho02Llmwjmz5bDSbKVzw32DqjrZ5KrSHhgyc=; b=bjZkMxIPNZ3wmKI3QGSepT81I5OzcwJOIb/dnupKeJzgemoOZcjM4yfreHA+pwVbeP HOd/bgUCet0z9B/XX2tfep3wWWWYLyeCIHFa1NDUjFWQdX5A572uwUJHv92lvCUSn0jH nDD1ayF0cF1sYXZY6D7okVUr906wpDImdUvSkzV/8th2CAYrKdz3orCKBweWTHnMlK4j 8Q9LXTwaogmTrXs5Gj4PAGJAZD90/jRoTwO/o58iZ0J59ckgaPVRY99HTFyy5G/KNc7Q k+iq8jJPMbsMV3H/So6AzW1W8RbB4qBsSsxHHBAFfFQVhi108BAllJmmP6SyPMsZeGbG 6mUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=Yo+m9KCho02Llmwjmz5bDSbKVzw32DqjrZ5KrSHhgyc=; b=cQ669PKHaCAe+x5Fr2EBb0p8SMbQOlx6cyePucjInMnPn3wIO4CBnRCPxufRb6CthH QavCqqoovn+vLDMAZtHyOTq+Zg0L0xs/VfXSFNRLEqsX5oV7Vv3LABR3NcmiynUif17b cyU9Mou/ehAIj0o8UdG0Q/o9r5ZQl2IHFg5QfiILK6REK7e1W7ln5nnicOoGzjS97rT4 CpvJ5crel+I4z2qk0PbdyHghRQ05/rtoeCAjQY/ZaE7yEq5S3r2icpEASblnHhczDgRZ QhcAfTfRxu8I3gTuHwskmhbojkBSBx1SM+5pMnoHx4mkGoAERPLFX25R7eU1tWFm/60J YMuQ== X-Gm-Message-State: AFqh2krsdY6/B7lSY9+rINQ09FXqTHvwdAmXj/+nzcAIStw5Y05azCqE YddCMnUeCLrDysoCNbVhdcmng10Y9eVPTQ== X-Google-Smtp-Source: AMrXdXtzyCslo5KrrtE6aj4KE0tZMImyQpChectqYz62yJ5Pkw2zwmGtohmj+/DGwHCRBdZk95hgJQ== X-Received: by 2002:a17:90b:92:b0:225:eda7:13e with SMTP id bb18-20020a17090b009200b00225eda7013emr35757516pjb.40.1672866896879; Wed, 04 Jan 2023 13:14:56 -0800 (PST) Received: from fedora.hsd1.ca.comcast.net ([2601:644:8002:1c20::a55d]) by smtp.googlemail.com with ESMTPSA id i8-20020a17090a138800b00226369149cesm6408pja.21.2023.01.04.13.14.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Jan 2023 13:14:56 -0800 (PST) From: "Vishal Moola (Oracle)" To: linux-fsdevel@vger.kernel.org Cc: linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org, linux-cifs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-nilfs@vger.kernel.org, linux-mm@kvack.org, "Vishal Moola (Oracle)" , Matthew Wilcox Subject: [PATCH v5 01/23] pagemap: Add filemap_grab_folio() Date: Wed, 4 Jan 2023 13:14:26 -0800 Message-Id: <20230104211448.4804-2-vishal.moola@gmail.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230104211448.4804-1-vishal.moola@gmail.com> References: <20230104211448.4804-1-vishal.moola@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Add function filemap_grab_folio() to grab a folio from the page cache. This function is meant to serve as a folio replacement for grab_cache_page, and is used to facilitate the removal of find_get_pages_range_tag(). Signed-off-by: Vishal Moola (Oracle) Reviewed-by: Matthew Wilcox (Oracle) --- include/linux/pagemap.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 29e1f9e76eb6..468183be67be 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -546,6 +546,26 @@ static inline struct folio *filemap_lock_folio(struct address_space *mapping, return __filemap_get_folio(mapping, index, FGP_LOCK, 0); } +/** + * filemap_grab_folio - grab a folio from the page cache + * @mapping: The address space to search + * @index: The page index + * + * Looks up the page cache entry at @mapping & @index. If no folio is found, + * a new folio is created. The folio is locked, marked as accessed, and + * returned. + * + * Return: A found or created folio. NULL if no folio is found and failed to + * create a folio. + */ +static inline struct folio *filemap_grab_folio(struct address_space *mapping, + pgoff_t index) +{ + return __filemap_get_folio(mapping, index, + FGP_LOCK | FGP_ACCESSED | FGP_CREAT, + mapping_gfp_mask(mapping)); +} + /** * find_get_page - find and get a page reference * @mapping: the address_space to search