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 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,URIBL_BLOCKED,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 EC222C433DB for ; Fri, 5 Mar 2021 04:25:12 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 9B71765009 for ; Fri, 5 Mar 2021 04:25:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9B71765009 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 9DB1A6B000C; Thu, 4 Mar 2021 23:25:11 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 9624F6B000E; Thu, 4 Mar 2021 23:25:11 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 76B196B000C; Thu, 4 Mar 2021 23:25:11 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0008.hostedemail.com [216.40.44.8]) by kanga.kvack.org (Postfix) with ESMTP id 531926B000D for ; Thu, 4 Mar 2021 23:25:11 -0500 (EST) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 168BF8249980 for ; Fri, 5 Mar 2021 04:25:11 +0000 (UTC) X-FDA: 77884530822.11.760BE87 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf05.hostedemail.com (Postfix) with ESMTP id 111E0E0011E0 for ; Fri, 5 Mar 2021 04:25:09 +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=TbwKTsRFeRRDANTFRahEyrvCD2paHgaZGJcv04iRdsE=; b=pPmEabNdKjB2yes6KuAwcqe3iJ bh5J/cXoSJsZvy/YKVKrwJRFMYWcepswsJW28fGrnwftIMY8F9JC/oCMFUAA55u4S4ViSVRFfBPP5 yCKnvtXvECap+Wj2ue5CnVjDyYGMC+eANie/Ih7Qw/xTplhBSydoVTa1gCngKVlWx9h+Zeco4FA3Q bGTRWF38KztlWT1KaQKxr9+lXMCM2UYnd4vs5a7fiSPWmYA9Vl0SIt03wdBDbU80MrIyOJskBDmVR UP/KrOv2zin6BARrEDTAnkZMW8Slq1YebYC9IOX11T/LrdjM18ZAbvc7yu9NfJQtjLEyo33U/AG1l GlF0JACA==; Received: from willy by casper.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1lI20v-00A3tR-4l; Fri, 05 Mar 2021 04:24:38 +0000 From: "Matthew Wilcox (Oracle)" To: linux-mm@kvack.org Cc: "Matthew Wilcox (Oracle)" , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH v4 17/25] mm/filemap: Add wait_on_folio_locked & wait_on_folio_locked_killable Date: Fri, 5 Mar 2021 04:18:53 +0000 Message-Id: <20210305041901.2396498-18-willy@infradead.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210305041901.2396498-1-willy@infradead.org> References: <20210305041901.2396498-1-willy@infradead.org> MIME-Version: 1.0 X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 111E0E0011E0 X-Stat-Signature: s473hfx8pc1d9hubaztrd9ugwm8pseni Received-SPF: none (infradead.org>: No applicable sender policy available) receiver=imf05; identity=mailfrom; envelope-from=""; helo=casper.infradead.org; client-ip=90.155.50.34 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1614918309-212155 Content-Transfer-Encoding: quoted-printable 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: Turn wait_on_page_locked() and wait_on_page_locked_killable() into wrappers. This eliminates a call to compound_head() from each call-site, reducing text size by 207 bytes for me. Signed-off-by: Matthew Wilcox (Oracle) --- include/linux/pagemap.h | 26 ++++++++++++++++++-------- mm/filemap.c | 4 ++-- 2 files changed, 20 insertions(+), 10 deletions(-) diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index e7fe8b276a2d..c53743f24550 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -732,23 +732,33 @@ extern void wait_on_page_bit(struct page *page, int= bit_nr); extern int wait_on_page_bit_killable(struct page *page, int bit_nr); =20 /*=20 - * Wait for a page to be unlocked. + * Wait for a folio to be unlocked. * - * This must be called with the caller "holding" the page, - * ie with increased "page->count" so that the page won't + * This must be called with the caller "holding" the folio, + * ie with increased "page->count" so that the folio won't * go away during the wait.. */ +static inline void wait_on_folio_locked(struct folio *folio) +{ + if (FolioLocked(folio)) + wait_on_page_bit(&folio->page, PG_locked); +} + +static inline int wait_on_folio_locked_killable(struct folio *folio) +{ + if (!FolioLocked(folio)) + return 0; + return wait_on_page_bit_killable(&folio->page, PG_locked); +} + static inline void wait_on_page_locked(struct page *page) { - if (PageLocked(page)) - wait_on_page_bit(compound_head(page), PG_locked); + wait_on_folio_locked(page_folio(page)); } =20 static inline int wait_on_page_locked_killable(struct page *page) { - if (!PageLocked(page)) - return 0; - return wait_on_page_bit_killable(compound_head(page), PG_locked); + return wait_on_folio_locked_killable(page_folio(page)); } =20 int put_and_wait_on_page_locked(struct page *page, int state); diff --git a/mm/filemap.c b/mm/filemap.c index e25a5ebc914c..50263fa62574 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1559,9 +1559,9 @@ int __lock_page_or_retry(struct page *page, struct = mm_struct *mm, =20 mmap_read_unlock(mm); if (flags & FAULT_FLAG_KILLABLE) - wait_on_page_locked_killable(page); + wait_on_folio_locked_killable(folio); else - wait_on_page_locked(page); + wait_on_folio_locked(folio); return 0; } if (flags & FAULT_FLAG_KILLABLE) { --=20 2.30.0