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 7505EC07E99 for ; Mon, 12 Jul 2021 19:14:36 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2D62761042 for ; Mon, 12 Jul 2021 19:14:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2D62761042 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 5B96E6B0098; Mon, 12 Jul 2021 15:14:36 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 590366B0099; Mon, 12 Jul 2021 15:14:36 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 45ACF6B009B; Mon, 12 Jul 2021 15:14:36 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0250.hostedemail.com [216.40.44.250]) by kanga.kvack.org (Postfix) with ESMTP id 246B06B0098 for ; Mon, 12 Jul 2021 15:14:36 -0400 (EDT) Received: from smtpin19.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 3D2482774C for ; Mon, 12 Jul 2021 19:14:35 +0000 (UTC) X-FDA: 78354887310.19.AD6663B Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf19.hostedemail.com (Postfix) with ESMTP id E449CB000193 for ; Mon, 12 Jul 2021 19:14:34 +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=wxo47piTAD6YTC6D0qoMYybSYTMdwvF55wUnIaJv/i8=; b=QopgO+t7SLWn7VHcjrcscDpxtF bb35AeoT0qE/lV3aiZs0yaUeX2KE7v2kZTS7daQ114uDVuNEh0XOmFxF1a5spL71rIT7oakTGa/Z4 CDNoFARP79KMBmmkrOWjf0FImaj7faxMaEROclkUH52PbxRuUC2pvzpWhkFDiIz+H6Y4uOYXuRHU8 GeavIQmACTOFhNI8BAQ+zSQxebtuUt0hgL5UDH9w6fJWgFr35D7QcUAjsgOWBzISoRn1oZcUKeEQG wavp5vS23pjmrL1uXcLfsOeBRc0ArK0SEIBrIkN0T0B6OTsWBiSciOC1aDNqEfTFhY5/iCGt/wSVS nXToP52Q==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1m31My-000M5M-Ec; Mon, 12 Jul 2021 19:13:40 +0000 From: "Matthew Wilcox (Oracle)" To: akpm@linux-foundation.org Cc: "Matthew Wilcox (Oracle)" , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, Christoph Hellwig , Jeff Layton , "Kirill A . Shutemov" , Vlastimil Babka , William Kucharski , David Howells Subject: [PATCH v13 21/32] mm/filemap: Add folio_wait_locked() Date: Mon, 12 Jul 2021 20:01:53 +0100 Message-Id: <20210712190204.80979-22-willy@infradead.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210712190204.80979-1-willy@infradead.org> References: <20210712190204.80979-1-willy@infradead.org> MIME-Version: 1.0 Authentication-Results: imf19.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=QopgO+t7; spf=none (imf19.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: rspam03 X-Rspamd-Queue-Id: E449CB000193 X-Stat-Signature: my7u4e1qcc4sf17x1aacxybuhe56ei7r X-HE-Tag: 1626117274-88905 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: Also add folio_wait_locked_killable(). 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 193 bytes for me. Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Christoph Hellwig Acked-by: Jeff Layton Acked-by: Kirill A. Shutemov Acked-by: Vlastimil Babka Reviewed-by: William Kucharski Reviewed-by: David Howells --- 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 79ff079346aa..7994b497d505 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -733,23 +733,33 @@ 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 folio_wait_locked(struct folio *folio) +{ + if (folio_locked(folio)) + wait_on_page_bit(&folio->page, PG_locked); +} + +static inline int folio_wait_locked_killable(struct folio *folio) +{ + if (!folio_locked(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); + folio_wait_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 folio_wait_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 19c1486d85d2..018fad19146e 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1649,9 +1649,9 @@ 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); + folio_wait_locked_killable(folio); else - wait_on_page_locked(page); + folio_wait_locked(folio); return 0; } if (flags & FAULT_FLAG_KILLABLE) { --=20 2.30.2