From patchwork Fri Oct 9 14:30:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 1379228 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2001:8b0:10b:1231::1; helo=merlin.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.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=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=merlin.20170209 header.b=RiS306aK; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=casper.20170209 header.b=UkGU12VI; dkim-atps=neutral Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:8b0:10b:1231::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4C79Xn0qMxz9sWw for ; Sat, 10 Oct 2020 01:33:12 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=JLbfEWzSCS+m4Ad+8QqhqvtIaiRwFZCl1NBZNWu6p30=; b=RiS306aKbgDRVm3KrJACIc9OF o+AOegaSZ14YISOMAWechDXzy507IlypL2XQrAXLIhFrb7olYQvIlPbVVzKBQ+PcpMZpvfhLsG8BY vnyMUzbcVgKaQGY5OsGiBjMxPZWe6r5/fJcwiEwqNyh0b7i0AfpfdsQtGXyEOC3SXN+u+frBEnEGv LLrwBPNcikuJfl1Fmt0NcRPfjPYtLhd2mAyC5kCa6tk04Dj7u8qILTrAo7zoN/9jRk16XYYpKKOxa bpoQnOMs9RufSCRXD+JE8YnXEwWYnGPofmYvg2ET37o/TiM/G6kB9Z1iJ5+BtAiSA1QrpNxc9XYG4 UMMHhREDg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQtRi-000453-DS; Fri, 09 Oct 2020 14:32:34 +0000 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQtQM-0003MS-V1; Fri, 09 Oct 2020 14:31:11 +0000 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=GW1YniPzUpda1PIsi2+AeQMOnKxd544xKFcJ+bcv5fM=; b=UkGU12VIIK99MHzzfEryJUWbjO A0nKktmS8L+pBXk27jD0P9xgYbyljS6tsG8fMjJJpMDG2kRA2N8MVd7r4ckabTScnK0YgmTTfTxJs FWD0S5kScgojp6mVIa5rSQ7tkL6wO/nzblA4AN5aaXMhmOo+V/mRvQ3bc3iTPjQQLC5rkw3ueoU9n T2v4r1/bCFm0FHkTqpfc7gLV+TXyWxNrhpFXAnWXyVvuzv8EY5bzSr1+wA8/3w0M2H2fL7oL7chak g7Z8Ez1HNYatDB1fkRf1mxdg6JbokrEYb5spx6bU41Om7N/n7D5GJbHbOJ1lTZ9qxmEpBDlnJ130m t/QP01eQ==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQtQL-0005va-Lv; Fri, 09 Oct 2020 14:31:09 +0000 From: "Matthew Wilcox (Oracle)" To: linux-fsdevel@vger.kernel.org Subject: [PATCH v2 10/16] hostfs: Tell the VFS that readpage was synchronous Date: Fri, 9 Oct 2020 15:30:58 +0100 Message-Id: <20201009143104.22673-11-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 X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-cifs@vger.kernel.org, Richard Weinberger , ecryptfs@vger.kernel.org, linux-um@lists.infradead.org, linux-kernel@vger.kernel.org, "Matthew Wilcox \(Oracle\)" , linux-xfs@vger.kernel.org, linux-mm@kvack.org, linux-mtd@lists.infradead.org, v9fs-developer@lists.sourceforge.net, ceph-devel@vger.kernel.org, linux-afs@lists.infradead.org Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org The hostfs 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/hostfs/hostfs_kern.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index c070c0d8e3e9..c49221c09c4b 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -455,6 +455,8 @@ static int hostfs_readpage(struct file *file, struct page *page) out: flush_dcache_page(page); kunmap(page); + if (!ret) + return AOP_UPDATED_PAGE; unlock_page(page); return ret; }