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=-9.5 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=unavailable 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 2336CC433E0 for ; Wed, 10 Jun 2020 20:16:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E9DD02065C for ; Wed, 10 Jun 2020 20:16:28 +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="igTBtfUm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728403AbgFJUQE (ORCPT ); Wed, 10 Jun 2020 16:16:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60512 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730560AbgFJUNu (ORCPT ); Wed, 10 Jun 2020 16:13:50 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A06E9C008633; Wed, 10 Jun 2020 13:13:48 -0700 (PDT) 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=NF4IbJ7tnb1BDecklJKAGawEVJngscEaY/hk+Y65vZs=; b=igTBtfUmXt8Mznyh9YOcO59toO 3vqpDxaK4c26kTmcie0ib46b+joeV0vZI044ZEzVKnl9axARAjdnM5utCYzbPKHgKBNio/S2phuVn 2ucEZ+AlaK7ZFrwiwb6G8bnHHA/6Y3Sck4HLUVAX4Piv1COkFXSTQG6BFlnNIIHNQFKdLXlj4G606 jxBeKSdAi86B4Yxpk2/HYIhrKw23tZsWvZvfjsvKZOBJ+SRX1VtQ8+auhYf853jKeZ+weKscFrH5C ZRn3S3st12cQtogLDrb3CGF56kritIFeUu6l5naRJaSbRf1kWwDnehV03zRwIeaFvMdNdEwQpDkUV 9sE8Iz4Q==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jj76a-0003WG-Ga; Wed, 10 Jun 2020 20:13:48 +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 v6 31/51] iomap: Handle tail pages in iomap_page_mkwrite Date: Wed, 10 Jun 2020 13:13:25 -0700 Message-Id: <20200610201345.13273-32-willy@infradead.org> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200610201345.13273-1-willy@infradead.org> References: <20200610201345.13273-1-willy@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 318c1ecc18c0..8359e369c4b5 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -1046,7 +1046,7 @@ iomap_page_mkwrite_actor(struct inode *inode, loff_t pos, loff_t length, vm_fault_t iomap_page_mkwrite(struct vm_fault *vmf, const struct iomap_ops *ops) { - struct page *page = vmf->page; + struct page *page = thp_head(vmf->page); struct inode *inode = file_inode(vmf->vma->vm_file); unsigned long length; loff_t offset; -- 2.26.2