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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D4D30C4708E for ; Thu, 29 Dec 2022 16:11:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233648AbiL2QLM (ORCPT ); Thu, 29 Dec 2022 11:11:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50674 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233343AbiL2QLA (ORCPT ); Thu, 29 Dec 2022 11:11:00 -0500 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF2CB1111; Thu, 29 Dec 2022 08:10:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; 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; bh=x4y/4KuqfNuPAflIAi82X++2iXzPIgIv4Sol4IXfpIE=; b=hCkiJn6NwipyF95xZ/GfQjLDmb Si4sdlVrqYhOzIyOHDvE4X1IaWOLKGwwB/WyfjcmVjqFBn391Tx3NsE4ImwHez5KUQC/YOtFnd3mB r0I/7KTgno8i5rUd8vWxs5M/4cUs5R7OBibrzqx9/lV/aVXxlt4uKk9q1q5ScZ1TEx6FqrKHPk9Ow 3MypnruGXVZJgQEhTyB8WJmJjakTwGYd+3QT1gdqttF5scQ2eSbdXz50yJDorlrrXTwZmCZInLwjR YllxS++9Um0yVvQk5aqOUb7TRQl9yf2UWXnv73HmIV5RLJGI6TFAVilzX/ndLItpgvO2wMHJZDKsO xGCE/zIA==; Received: from rrcs-67-53-201-206.west.biz.rr.com ([67.53.201.206] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1pAvUQ-00HKPY-BW; Thu, 29 Dec 2022 16:10:42 +0000 From: Christoph Hellwig To: Andrew Morton , "Theodore Ts'o" , Jan Kara , Konstantin Komarov , Mark Fasheh , Joel Becker , Joseph Qi , "Matthew Wilcox (Oracle)" Cc: linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, ntfs3@lists.linux.dev, ocfs2-devel@oss.oracle.com, linux-mm@kvack.org Subject: [PATCH 6/6] mm: remove generic_writepages Date: Thu, 29 Dec 2022 06:10:31 -1000 Message-Id: <20221229161031.391878-7-hch@lst.de> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20221229161031.391878-1-hch@lst.de> References: <20221229161031.391878-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Now that all external callers are gone, just fold it into do_writepages. Signed-off-by: Christoph Hellwig --- include/linux/writeback.h | 2 -- mm/page-writeback.c | 53 +++++++++++---------------------------- 2 files changed, 15 insertions(+), 40 deletions(-) diff --git a/include/linux/writeback.h b/include/linux/writeback.h index 06f9291b6fd512..2554b71765e9d0 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -369,8 +369,6 @@ bool wb_over_bg_thresh(struct bdi_writeback *wb); typedef int (*writepage_t)(struct page *page, struct writeback_control *wbc, void *data); -int generic_writepages(struct address_space *mapping, - struct writeback_control *wbc); void tag_pages_for_writeback(struct address_space *mapping, pgoff_t start, pgoff_t end); int write_cache_pages(struct address_space *mapping, diff --git a/mm/page-writeback.c b/mm/page-writeback.c index ad608ef2a24365..dfeeceebba0ae0 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2526,12 +2526,8 @@ int write_cache_pages(struct address_space *mapping, } EXPORT_SYMBOL(write_cache_pages); -/* - * Function used by generic_writepages to call the real writepage - * function and set the mapping flags on error - */ -static int __writepage(struct page *page, struct writeback_control *wbc, - void *data) +static int writepage_cb(struct page *page, struct writeback_control *wbc, + void *data) { struct address_space *mapping = data; int ret = mapping->a_ops->writepage(page, wbc); @@ -2539,34 +2535,6 @@ static int __writepage(struct page *page, struct writeback_control *wbc, return ret; } -/** - * generic_writepages - walk the list of dirty pages of the given address space and writepage() all of them. - * @mapping: address space structure to write - * @wbc: subtract the number of written pages from *@wbc->nr_to_write - * - * This is a library function, which implements the writepages() - * address_space_operation. - * - * Return: %0 on success, negative error code otherwise - */ -int generic_writepages(struct address_space *mapping, - struct writeback_control *wbc) -{ - struct blk_plug plug; - int ret; - - /* deal with chardevs and other special file */ - if (!mapping->a_ops->writepage) - return 0; - - blk_start_plug(&plug); - ret = write_cache_pages(mapping, wbc, __writepage, mapping); - blk_finish_plug(&plug); - return ret; -} - -EXPORT_SYMBOL(generic_writepages); - int do_writepages(struct address_space *mapping, struct writeback_control *wbc) { int ret; @@ -2577,11 +2545,20 @@ int do_writepages(struct address_space *mapping, struct writeback_control *wbc) wb = inode_to_wb_wbc(mapping->host, wbc); wb_bandwidth_estimate_start(wb); while (1) { - if (mapping->a_ops->writepages) + if (mapping->a_ops->writepages) { ret = mapping->a_ops->writepages(mapping, wbc); - else - ret = generic_writepages(mapping, wbc); - if ((ret != -ENOMEM) || (wbc->sync_mode != WB_SYNC_ALL)) + } else if (mapping->a_ops->writepage) { + struct blk_plug plug; + + blk_start_plug(&plug); + ret = write_cache_pages(mapping, wbc, writepage_cb, + mapping); + blk_finish_plug(&plug); + } else { + /* deal with chardevs and other special files */ + ret = 0; + } + if (ret != -ENOMEM || wbc->sync_mode != WB_SYNC_ALL) break; /* -- 2.35.1