From patchwork Fri Oct 9 14:30:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 1379190 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-cifs-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=casper.20170209 header.b=OpgwA4h4; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4C79VQ6bMKz9sTR for ; Sat, 10 Oct 2020 01:31:10 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388736AbgJIObJ (ORCPT ); Fri, 9 Oct 2020 10:31:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53612 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731698AbgJIObI (ORCPT ); Fri, 9 Oct 2020 10:31:08 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D40CC0613D2; Fri, 9 Oct 2020 07:31:08 -0700 (PDT) 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=9pnCDQD7BT3wSOEmQ/ujAa+Hm2ir7A48RB79T7IxK0Q=; b=OpgwA4h4sqP1jU/IETGKZCdM+Q i2z3mUNTVaNMrPcKu/kIEUukM1dt974qFSZx4F1PJP3u9M1SgxVKgcIonjd/aNrK8oJYJJN4oHRk1 obdU0/M9Ik9JMH/nzkWE8D3yho4lKnaBpftYWxPJpDwLQo52xiQnfV7kpYc8EtYGLGmDorJ9y8V5N CJcX+ugzQELTPBZdvOkJejfwb3L1y6UeR3FiWZL/sICMMOlGRRiA2qGYtu0wV9jkbIzwzA2oq/dOd H5aqicfp9nwOgncn7C7ET7kxAk5rWlkDprT8RSZwKu9U+B7N0o7spekfqopBUVo/2X+R5nO4vA99R nxNxhJxw==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQtQI-0005uX-P8; Fri, 09 Oct 2020 14:31:06 +0000 From: "Matthew Wilcox (Oracle)" To: linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org, v9fs-developer@lists.sourceforge.net, linux-kernel@vger.kernel.org, linux-afs@lists.infradead.org, ceph-devel@vger.kernel.org, linux-cifs@vger.kernel.org, ecryptfs@vger.kernel.org, linux-um@lists.infradead.org, linux-mtd@lists.infradead.org, Richard Weinberger , linux-xfs@vger.kernel.org Subject: [PATCH v2 02/16] mm: Inline wait_on_page_read into its one caller Date: Fri, 9 Oct 2020 15:30:50 +0100 Message-Id: <20201009143104.22673-3-willy@infradead.org> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20201009143104.22673-1-willy@infradead.org> References: <20201009143104.22673-1-willy@infradead.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Having this code inline helps the function read more easily. Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Christoph Hellwig --- mm/filemap.c | 20 ++++---------------- 1 file changed, 4 insertions(+), 16 deletions(-) diff --git a/mm/filemap.c b/mm/filemap.c index 95b68ec1f22c..0ef06d515532 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2834,18 +2834,6 @@ EXPORT_SYMBOL(filemap_page_mkwrite); EXPORT_SYMBOL(generic_file_mmap); EXPORT_SYMBOL(generic_file_readonly_mmap); -static struct page *wait_on_page_read(struct page *page) -{ - if (!IS_ERR(page)) { - wait_on_page_locked(page); - if (!PageUptodate(page)) { - put_page(page); - page = ERR_PTR(-EIO); - } - } - return page; -} - static struct page *do_read_cache_page(struct address_space *mapping, pgoff_t index, int (*filler)(void *, struct page *), @@ -2876,7 +2864,10 @@ static struct page *do_read_cache_page(struct address_space *mapping, err = mapping->a_ops->readpage(data, page); if (err == AOP_UPDATED_PAGE) { unlock_page(page); - goto out; + } else if (!err) { + wait_on_page_locked(page); + if (!PageUptodate(page)) + err = -EIO; } if (err < 0) { @@ -2884,9 +2875,6 @@ static struct page *do_read_cache_page(struct address_space *mapping, return ERR_PTR(err); } - page = wait_on_page_read(page); - if (IS_ERR(page)) - return page; goto out; } if (PageUptodate(page))