From patchwork Fri Oct 9 14:31:00 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 11826083 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=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 E6409C43457 for ; Fri, 9 Oct 2020 14:32:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B3E00222BA for ; Fri, 9 Oct 2020 14:32:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="QHCGxvwZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388965AbgJIObr (ORCPT ); Fri, 9 Oct 2020 10:31:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53640 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388856AbgJIObM (ORCPT ); Fri, 9 Oct 2020 10:31:12 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1059CC0613D9; Fri, 9 Oct 2020 07:31:12 -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=qnANyeE8BGUfs9EI0mAgvyYgGmWNNC+tzF64JAGclAM=; b=QHCGxvwZzOX1kKFzij5mlSA/gw QTEkEHUkZeBUJ3wxqkKLJnb+bsoPZd4hqA4z6Fwej0ZQFO//xttCyk0G8YeGWpkWOR3Ke/QHezikU UDp2rHaCqzXEJaLyZsMKYIcB76E++KCon/B6LkQ7B4lkZm/QIUpuSjEl7+/dqENZ1ckEIQZVsUjZ7 ks/g/Az4xPcjq9NueOILPQhW/QPHNUAt/TaqD3NrozoRyFrwY7lri5+g0QXxkQNUY8pwlwF5g61iK i1MIhRgWYaawB21c84FTADz1O9wLc66fLBSz21rg1EdS0WrlcP85GM4DMvNPwUHqexLNS+zDBNn2N 9ny/3G4w==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQtQM-0005vs-7D; Fri, 09 Oct 2020 14:31:10 +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 12/16] ubifs: Tell the VFS that readpage was synchronous Date: Fri, 9 Oct 2020 15:31:00 +0100 Message-Id: <20201009143104.22673-13-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 The ubifs readpage implementation was already synchronous, so use AOP_UPDATED_PAGE to avoid cycling the page lock. Signed-off-by: Matthew Wilcox (Oracle) Acked-by: Richard Weinberger --- fs/ubifs/file.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index b77d1637bbbc..82633509c45e 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -772,7 +772,6 @@ static int ubifs_do_bulk_read(struct ubifs_info *c, struct bu_info *bu, if (err) goto out_warn; - unlock_page(page1); ret = 1; isize = i_size_read(inode); @@ -892,11 +891,16 @@ static int ubifs_bulk_read(struct page *page) static int ubifs_readpage(struct file *file, struct page *page) { - if (ubifs_bulk_read(page)) - return 0; - do_readpage(page); - unlock_page(page); - return 0; + int err; + + err = ubifs_bulk_read(page); + if (err == 0) + err = do_readpage(page); + if (err < 0) { + unlock_page(page); + return err; + } + return AOP_UPDATED_PAGE; } static int do_writepage(struct page *page, int len)