From patchwork Thu Jul 15 20:00:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 12381003 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3EA55C636C9 for ; Thu, 15 Jul 2021 20:27:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 23EDA613D8 for ; Thu, 15 Jul 2021 20:27:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231192AbhGOU3w (ORCPT ); Thu, 15 Jul 2021 16:29:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51940 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231390AbhGOU3K (ORCPT ); Thu, 15 Jul 2021 16:29:10 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 328A9C061764 for ; Thu, 15 Jul 2021 13:26:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=g0o7Cuq8kb/CSOO/bLXZOffqZaroMfg4j0pCL7GsUjY=; b=vE3R9YJXheuI3NpHCOkpoGZ3XV oTpD67wqikh6G1ojEldc1H2SKs+ccbYEghAvxeSanrPV5DGcoRXRJ6fBsDtS2XNVgj9Gff/m7eGlO Z/DDfH848Ul+oYfWp5OWz1IQV+r4n8QeY1t9m2VboB+psCY5eiG0Y7jq5C0v904XlMARanYezk7M/ +Fp8lgHGrJyshqHb+lGuWKqg36K2SKyZsrQLNZtml5s/o19LFpXamIE2JNlVySdy6/n9I9xQ+FkTF vVcn5/4w1fOXMelpHwMoRsWHxanLBygE/fxpv/NENjkXlbn4WY2xfS6kcjbLbF5olW/IEdLfyljbd COfl7flg==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1m47ty-003pIv-6a; Thu, 15 Jul 2021 20:24:42 +0000 From: "Matthew Wilcox (Oracle)" To: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , Christoph Hellwig Subject: [PATCH v14 23/39] mm/writeback: Add folio_cancel_dirty() Date: Thu, 15 Jul 2021 21:00:14 +0100 Message-Id: <20210715200030.899216-24-willy@infradead.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210715200030.899216-1-willy@infradead.org> References: <20210715200030.899216-1-willy@infradead.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Turn __cancel_dirty_page() into __folio_cancel_dirty() and add wrappers. Move the prototypes into pagemap.h since this is page cache functionality. Saves 44 bytes of kernel text in total; 33 bytes from __folio_cancel_dirty and 11 from two callers of cancel_dirty_page(). Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Christoph Hellwig --- include/linux/mm.h | 7 ------- include/linux/pagemap.h | 11 +++++++++++ mm/page-writeback.c | 16 ++++++++-------- 3 files changed, 19 insertions(+), 15 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 481019481d10..07ba22351d15 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2005,13 +2005,6 @@ int redirty_page_for_writepage(struct writeback_control *wbc, bool folio_mark_dirty(struct folio *folio); bool set_page_dirty(struct page *page); int set_page_dirty_lock(struct page *page); -void __cancel_dirty_page(struct page *page); -static inline void cancel_dirty_page(struct page *page) -{ - /* Avoid atomic ops, locking, etc. when not actually needed. */ - if (PageDirty(page)) - __cancel_dirty_page(page); -} int clear_page_dirty_for_io(struct page *page); int get_cmdline(struct task_struct *task, char *buffer, int buflen); diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 665ba6a67385..a4d0aeaf884d 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -786,6 +786,17 @@ static inline void account_page_cleaned(struct page *page, { return folio_account_cleaned(page_folio(page), mapping, wb); } +void __folio_cancel_dirty(struct folio *folio); +static inline void folio_cancel_dirty(struct folio *folio) +{ + /* Avoid atomic ops, locking, etc. when not actually needed. */ + if (folio_test_dirty(folio)) + __folio_cancel_dirty(folio); +} +static inline void cancel_dirty_page(struct page *page) +{ + folio_cancel_dirty(page_folio(page)); +} int __set_page_dirty_nobuffers(struct page *page); int __set_page_dirty_no_writeback(struct page *page); diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 792a83bd3917..0854ef768d06 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2640,28 +2640,28 @@ EXPORT_SYMBOL(set_page_dirty_lock); * page without actually doing it through the VM. Can you say "ext3 is * horribly ugly"? Thought you could. */ -void __cancel_dirty_page(struct page *page) +void __folio_cancel_dirty(struct folio *folio) { - struct address_space *mapping = page_mapping(page); + struct address_space *mapping = folio_mapping(folio); if (mapping_can_writeback(mapping)) { struct inode *inode = mapping->host; struct bdi_writeback *wb; struct wb_lock_cookie cookie = {}; - lock_page_memcg(page); + folio_memcg_lock(folio); wb = unlocked_inode_to_wb_begin(inode, &cookie); - if (TestClearPageDirty(page)) - account_page_cleaned(page, mapping, wb); + if (folio_test_clear_dirty(folio)) + folio_account_cleaned(folio, mapping, wb); unlocked_inode_to_wb_end(inode, &cookie); - unlock_page_memcg(page); + folio_memcg_unlock(folio); } else { - ClearPageDirty(page); + folio_clear_dirty(folio); } } -EXPORT_SYMBOL(__cancel_dirty_page); +EXPORT_SYMBOL(__folio_cancel_dirty); /* * Clear a page's dirty flag, while caring for dirty memory accounting.