From patchwork Fri Oct 9 14:31:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 11826079 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=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 1AC0EC433E7 for ; Fri, 9 Oct 2020 14:31:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D1D6F222EA for ; Fri, 9 Oct 2020 14:31:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="svvQxaEq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388961AbgJIObr (ORCPT ); Fri, 9 Oct 2020 10:31:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388865AbgJIObN (ORCPT ); Fri, 9 Oct 2020 10:31:13 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BDF09C0613DB; 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=7bp7tBDREj0/quRwoGKFhcM4IA6X+ak+6znUWRbIy7w=; b=svvQxaEqComXNsnloU5QdTOfQX j5Vybbl+ZoYosElrxZZapxy+9mzBke87nDeFnpmkA9kgo8W6muEHuC0cvQ8RwP/uaJ9Fhm/8HRFUi jfQ4mqVwo2IqElrz1oXUQFfvRpGQIxfBnC1nZeqv7lcvZahJvQbV5YetwZFRdG4xkbPRmFJUZUOpK kj+UhdEeQMT7jVJSnA2JrJrHa6fWP3wEQn6dRgSwxcw861oen0eG0UkTicv54ZTzTDFpNgWBZ5FNk 022doLGYwiiKYz+Zps8BnQSTd+Qeq2POAzhXajcBg9F4YWP+f1Fq2Ev4pHlKSxD2LWhmyIQameERt 56HCA3Xg==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQtQN-0005wD-2K; Fri, 09 Oct 2020 14:31:11 +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 14/16] vboxsf: Tell the VFS that readpage was synchronous Date: Fri, 9 Oct 2020 15:31:02 +0100 Message-Id: <20201009143104.22673-15-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 vboxsf inline data readpage implementation was already synchronous, so use AOP_UPDATED_PAGE to avoid cycling the page lock. Signed-off-by: Matthew Wilcox (Oracle) --- fs/vboxsf/file.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/vboxsf/file.c b/fs/vboxsf/file.c index c4ab5996d97a..c2a144e5cb5a 100644 --- a/fs/vboxsf/file.c +++ b/fs/vboxsf/file.c @@ -228,6 +228,8 @@ static int vboxsf_readpage(struct file *file, struct page *page) } kunmap(page); + if (!err) + return AOP_UPDATED_PAGE; unlock_page(page); return err; }