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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 42627C433E2 for ; Tue, 8 Sep 2020 20:19:57 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B6A302145D for ; Tue, 8 Sep 2020 20:19:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="neJj6CQO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B6A302145D 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 F331A6B0068; Tue, 8 Sep 2020 16:19:55 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id EE3996B0073; Tue, 8 Sep 2020 16:19:55 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DAB296B0074; Tue, 8 Sep 2020 16:19:55 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0119.hostedemail.com [216.40.44.119]) by kanga.kvack.org (Postfix) with ESMTP id C5E7F6B0068 for ; Tue, 8 Sep 2020 16:19:55 -0400 (EDT) Received: from smtpin02.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 7A684180AD80F for ; Tue, 8 Sep 2020 20:19:55 +0000 (UTC) X-FDA: 77241010350.02.bit76_5b04841270d7 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin02.hostedemail.com (Postfix) with ESMTP id 4E7AA100BA1D2 for ; Tue, 8 Sep 2020 20:19:55 +0000 (UTC) X-HE-Tag: bit76_5b04841270d7 X-Filterd-Recvd-Size: 2312 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf15.hostedemail.com (Postfix) with ESMTP for ; Tue, 8 Sep 2020 20:19:54 +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=HGF7VWJvED/7UZMRt35VBn5dhGT03hgfd1h+bSk1jCs=; b=neJj6CQOwNofR5p2e94D2haPdM tmUU90aQT+PxNFTg15Niq5iyG43/1ZbsLDY13yCi2v/rjH8Vr50HwCztHHME9aE9OEZgkV4ak6878 3YVgJteqredJNMVm+jmC9m3xlG5+A+czYRxt0S8jC8DkAM1CknGNqM1UNoNBQCOesWJsp92UXKdCo NueIMayU5ssr5ywOM3Otmx2mtZojW2adMzt/Ez9MVzluewoTqZ/KjqzMbX58dOcAhR+xRjFJ0kda3 phnBRV54m6+TlKhNSQkLbjKvPzvutCMlxkUWzcrOgRbuTG/Q6XPGMxW4UODs14Vs2iA2nwWuulsbW MagGc0+A==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kFjic-0006ns-DA; Tue, 08 Sep 2020 19:55:54 +0000 From: "Matthew Wilcox (Oracle)" To: linux-mm@kvack.org, Andrew Morton Cc: "Matthew Wilcox (Oracle)" , "Kirill A . Shutemov" , Huang Ying Subject: [PATCH 10/11] mm/page-writeback: Support tail pages in wait_for_stable_page Date: Tue, 8 Sep 2020 20:55:37 +0100 Message-Id: <20200908195539.25896-11-willy@infradead.org> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20200908195539.25896-1-willy@infradead.org> References: <20200908195539.25896-1-willy@infradead.org> MIME-Version: 1.0 X-Rspamd-Queue-Id: 4E7AA100BA1D2 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 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: page->mapping is undefined for tail pages, so operate exclusively on the head page. Signed-off-by: Matthew Wilcox (Oracle) --- mm/page-writeback.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 4e4ddd67b71e..dac075e451d3 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2849,6 +2849,7 @@ EXPORT_SYMBOL_GPL(wait_on_page_writeback); */ void wait_for_stable_page(struct page *page) { + page =3D thp_head(page); if (bdi_cap_stable_pages_required(inode_to_bdi(page->mapping->host))) wait_on_page_writeback(page); } --=20 2.28.0