From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Vishal Moola (Oracle)" 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> References: <20230104211448.4804-1-vishal.moola@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=Yo+m9KCho02Llmwjmz5bDSbKVzw32DqjrZ5KrSHhgyc=; b=IXgHWiFeSbC2X1bajUWKZFogMP 6AGjk8MjQXDu8Dm10qeXDS17L9Gh+7mlaA2jgyQHpJuauIBoXaLwogFEkS2TC85BnfZET/VFjdKBZ 8NN/0ti+6IJJAdl3QeGEvTFgEoV8oGIK9ywfSYRWEAzShDKGSAZnMrcat9PV5N/AvZmg=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=Yo+m9KCho02Llmwjmz5bDSbKVzw32DqjrZ5KrSHhgyc=; b=meCC3o1Lws8nQ0VNeYdsAQ2qRp YN9Q5QM2ipi6rREzx4rOBbrKCIZdIKFVd0+B2qk2naTuRhHBfLeoVoFh0ieMk5TyDtobF48Nr2Q9z ouzTRQwIt3ARO0t6r89tyQ+Rn23gFseASqhzhAgH2HPVUznhVCqtwR2YhqOX3MJtY3DI=; 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== In-Reply-To: <20230104211448.4804-1-vishal.moola@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net To: linux-fsdevel@vger.kernel.org Cc: linux-cifs@vger.kernel.org, linux-nilfs@vger.kernel.org, "Vishal Moola (Oracle)" , linux-kernel@vger.kernel.org, Matthew Wilcox , linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-mm@kvack.org, ceph-devel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-afs@lists.infradead.org, linux-btrfs@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 -- 2.38.1