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=-9.6 required=3.0 tests=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 5B95EC433DF for ; Fri, 15 May 2020 13:41:55 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 1C5E420657 for ; Fri, 15 May 2020 13:41:55 +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="d3TlqHTk" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1C5E420657 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 DE27E80054; Fri, 15 May 2020 09:41:52 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D92AE8004F; Fri, 15 May 2020 09:41:52 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C587D80054; Fri, 15 May 2020 09:41:52 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0109.hostedemail.com [216.40.44.109]) by kanga.kvack.org (Postfix) with ESMTP id AA3AE8004F for ; Fri, 15 May 2020 09:41:52 -0400 (EDT) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 6F48C4DD9 for ; Fri, 15 May 2020 13:41:52 +0000 (UTC) X-FDA: 76819066464.01.glass56_1054680cf4617 X-HE-Tag: glass56_1054680cf4617 X-Filterd-Recvd-Size: 2542 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf35.hostedemail.com (Postfix) with ESMTP for ; Fri, 15 May 2020 13:41:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.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=kctqXUEbJSGFBp0C69mEnvf8pEF/klfm+B94fnKg93s=; b=d3TlqHTkAswFZfqcMcnOBrAtFy ydFcG62k4wBoE9MXlHZ2NzoIr8zn+7WFMkvyBsVxDZ9n0F/MGaVcbT5URv3sA6ulIlTxPhxx4ZAak gFhkiyoH9FD7bX2gbC2tHWw+Rlpb7eFcpiYhsSMpV3qk08Dv0eba2X4pFnaPdBEfQdtJYfZ01gjJs j16uubH7x6x0Jo0U1rYtpbM7SWw6XAaNoxWdjD94vdSpzvwjjzGXBpZeM2Vj90ilf43ThwX1yVrt4 bwkbpJp9aIatFjbEGLb8/Jin+oh19QOh4dvbMH2jPPfzzi7rHb+XJNpX7f/igRlSbeJcQApR9tCwl D5o/JxKw==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jZaCz-0005fw-Mb; Fri, 15 May 2020 13:17:01 +0000 From: Matthew Wilcox To: linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 18/36] iomap: Handle tail pages in iomap_page_mkwrite Date: Fri, 15 May 2020 06:16:38 -0700 Message-Id: <20200515131656.12890-19-willy@infradead.org> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200515131656.12890-1-willy@infradead.org> References: <20200515131656.12890-1-willy@infradead.org> MIME-Version: 1.0 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: From: "Matthew Wilcox (Oracle)" iomap_page_mkwrite() can be called with a tail page. If we are, operate on the head page, since we're treating the entire thing as a single unit and the whole page is dirtied at the same time. Signed-off-by: Matthew Wilcox (Oracle) --- fs/iomap/buffered-io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 782757258a28..c9636d55a4be 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -1060,7 +1060,7 @@ iomap_page_mkwrite_actor(struct inode *inode, loff_= t pos, loff_t length, =20 vm_fault_t iomap_page_mkwrite(struct vm_fault *vmf, const struct iomap_o= ps *ops) { - struct page *page =3D vmf->page; + struct page *page =3D compound_head(vmf->page); struct inode *inode =3D file_inode(vmf->vma->vm_file); unsigned long length; loff_t offset; --=20 2.26.2