From patchwork Thu Jul 15 19:59:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Matthew Wilcox (Oracle)" X-Patchwork-Id: 12380903 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 855E8C636C8 for ; Thu, 15 Jul 2021 20:10:02 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2F28961370 for ; Thu, 15 Jul 2021 20:10:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2F28961370 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 8F9B88D00FC; Thu, 15 Jul 2021 16:10:02 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 882B28D00EC; Thu, 15 Jul 2021 16:10:02 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 724038D00FC; Thu, 15 Jul 2021 16:10:02 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0174.hostedemail.com [216.40.44.174]) by kanga.kvack.org (Postfix) with ESMTP id 465C38D00EC for ; Thu, 15 Jul 2021 16:10:02 -0400 (EDT) Received: from smtpin33.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 266A0243A5 for ; Thu, 15 Jul 2021 20:10:01 +0000 (UTC) X-FDA: 78365913402.33.05BEC4E Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf11.hostedemail.com (Postfix) with ESMTP id CD456F00020B for ; Thu, 15 Jul 2021 20:10:00 +0000 (UTC) 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=InONYvAMt7FtRQ5+AzVzta7XRdKuWUeYcNdU4eMCT0w=; b=jjYfK4g5aV5nbGNkuul8EM0z+k CgAG+ln7VHoZvdZJksil5ts7jYs1wlYAkek6yVQVvgF+4CqbUy/IvWd49V9TRjLm0eT9P24bxZedn M2z4I2txI1wyN2f4Zd7+kd3vHgfxBQeOICK7yZtq9pGA7QC/Qh3Gg8WV81uV0fsOOkMjfy/MHRL64 DN90i5MaMJyMAfb7tcRpYh8VLoeAGCreGUazFNCdBdWY4Sh5po652Tia4/EtImmS7h4TAwIJ3SpSS w5dV6KGy6Ln2GT/BqeOU17AucQVXmIxCuOLIp0yz6wGaOqJgnQOE4zWMjLFHHxCbSv75mQrnjZAY9 wuc9HmDg==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1m47f3-003nER-90; Thu, 15 Jul 2021 20:09:02 +0000 From: "Matthew Wilcox (Oracle)" To: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" Subject: [PATCH v14 08/39] mm/swap: Add folio_mark_accessed() Date: Thu, 15 Jul 2021 20:59:59 +0100 Message-Id: <20210715200030.899216-9-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 Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=jjYfK4g5; spf=none (imf11.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org; dmarc=none X-Rspamd-Server: rspam05 X-Stat-Signature: 4zqk6uewxwjxs4ug1tsw7pqzdgcsr5ry X-Rspamd-Queue-Id: CD456F00020B X-HE-Tag: 1626379800-114526 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Convert mark_page_accessed() to folio_mark_accessed(). It already operated on the entire compound page, but now we can avoid calling compound_head quite so many times. Shrinks the function from 424 bytes to 295 bytes (shrinking by 129 bytes). The compatibility wrapper is 30 bytes, plus the 8 bytes for the exported symbol means the kernel shrinks by 91 bytes. Signed-off-by: Matthew Wilcox (Oracle) --- include/linux/swap.h | 3 ++- mm/folio-compat.c | 7 +++++++ mm/swap.c | 34 ++++++++++++++++------------------ 3 files changed, 25 insertions(+), 19 deletions(-) diff --git a/include/linux/swap.h b/include/linux/swap.h index 989d8f78c256..c7a4c0a5863d 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -352,7 +352,8 @@ extern void lru_note_cost(struct lruvec *lruvec, bool file, unsigned int nr_pages); extern void lru_note_cost_page(struct page *); extern void lru_cache_add(struct page *); -extern void mark_page_accessed(struct page *); +void mark_page_accessed(struct page *); +void folio_mark_accessed(struct folio *); extern atomic_t lru_disable_count; diff --git a/mm/folio-compat.c b/mm/folio-compat.c index 7044fcc8a8aa..a374747ae1c6 100644 --- a/mm/folio-compat.c +++ b/mm/folio-compat.c @@ -5,6 +5,7 @@ */ #include +#include struct address_space *page_mapping(struct page *page) { @@ -41,3 +42,9 @@ bool page_mapped(struct page *page) return folio_mapped(page_folio(page)); } EXPORT_SYMBOL(page_mapped); + +void mark_page_accessed(struct page *page) +{ + folio_mark_accessed(page_folio(page)); +} +EXPORT_SYMBOL(mark_page_accessed); diff --git a/mm/swap.c b/mm/swap.c index c3137e4e1cd8..d32007fe23b3 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -390,7 +390,7 @@ static void folio_activate(struct folio *folio) } #endif -static void __lru_cache_activate_page(struct page *page) +static void __lru_cache_activate_folio(struct folio *folio) { struct pagevec *pvec; int i; @@ -411,8 +411,8 @@ static void __lru_cache_activate_page(struct page *page) for (i = pagevec_count(pvec) - 1; i >= 0; i--) { struct page *pagevec_page = pvec->pages[i]; - if (pagevec_page == page) { - SetPageActive(page); + if (pagevec_page == &folio->page) { + folio_set_active(folio); break; } } @@ -430,36 +430,34 @@ static void __lru_cache_activate_page(struct page *page) * When a newly allocated page is not yet visible, so safe for non-atomic ops, * __SetPageReferenced(page) may be substituted for mark_page_accessed(page). */ -void mark_page_accessed(struct page *page) +void folio_mark_accessed(struct folio *folio) { - page = compound_head(page); - - if (!PageReferenced(page)) { - SetPageReferenced(page); - } else if (PageUnevictable(page)) { + if (!folio_test_referenced(folio)) { + folio_set_referenced(folio); + } else if (folio_test_unevictable(folio)) { /* * Unevictable pages are on the "LRU_UNEVICTABLE" list. But, * this list is never rotated or maintained, so marking an * evictable page accessed has no effect. */ - } else if (!PageActive(page)) { + } else if (!folio_test_active(folio)) { /* * If the page is on the LRU, queue it for activation via * lru_pvecs.activate_page. Otherwise, assume the page is on a * pagevec, mark it active and it'll be moved to the active * LRU on the next drain. */ - if (PageLRU(page)) - folio_activate(page_folio(page)); + if (folio_test_lru(folio)) + folio_activate(folio); else - __lru_cache_activate_page(page); - ClearPageReferenced(page); - workingset_activation(page_folio(page)); + __lru_cache_activate_folio(folio); + folio_clear_referenced(folio); + workingset_activation(folio); } - if (page_is_idle(page)) - clear_page_idle(page); + if (folio_test_idle(folio)) + folio_clear_idle(folio); } -EXPORT_SYMBOL(mark_page_accessed); +EXPORT_SYMBOL(folio_mark_accessed); /** * lru_cache_add - add a page to a page list