From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752475AbdDJSrb (ORCPT ); Mon, 10 Apr 2017 14:47:31 -0400 Received: from omzsmtpe03.verizonbusiness.com ([199.249.25.208]:26722 "EHLO omzsmtpe03.verizonbusiness.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751396AbdDJSr3 (ORCPT ); Mon, 10 Apr 2017 14:47:29 -0400 X-IronPort-Anti-Spam-Filtered: false X-IronPort-AV: E=Sophos;i="5.37,182,1488844800"; d="scan'208";a="330542566" From: alexander.levin@verizon.com Cc: "v9fs-developer@lists.sourceforge.net" , "linux-kernel@vger.kernel.org" , "jack@suse.com" , "viro@zeniv.linux.org.uk" , alexander.levin@verizon.com X-Host: challenger.odc.vzwcorp.com To: "ericvh@gmail.com" , "rminnich@sandia.gov" , "lucho@ionkov.net" Subject: [PATCH] 9p: set page uptodate when required in write_end() Thread-Topic: [PATCH] 9p: set page uptodate when required in write_end() Thread-Index: AQHSsirRaZAdjOarXE+CQy9Z9zTlZA== Date: Mon, 10 Apr 2017 18:46:51 +0000 Message-ID: <20170410184657.13430-1-alexander.levin@verizon.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.144.60.250] Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by mail.home.local id v3AIlZxB030169 From: Alexander Levin Commit 77469c3f570 prevented setting the page as uptodate when we wrote the right amount of data, fix that. Fixes: 77469c3f570 ("9p: saner ->write_end() on failing copy into non-uptodate page") Reviewed-by: Jan Kara Signed-off-by: Alexander Levin --- fs/9p/vfs_addr.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c index adaf6f6..e1cbdfd 100644 --- a/fs/9p/vfs_addr.c +++ b/fs/9p/vfs_addr.c @@ -310,9 +310,13 @@ static int v9fs_write_end(struct file *filp, struct address_space *mapping, p9_debug(P9_DEBUG_VFS, "filp %p, mapping %p\n", filp, mapping); - if (unlikely(copied < len && !PageUptodate(page))) { - copied = 0; - goto out; + if (!PageUptodate(page)) { + if (unlikely(copied < len)) { + copied = 0; + goto out; + } else if (len == PAGE_SIZE) { + SetPageUptodate(page); + } } /* * No need to use i_size_read() here, the i_size -- 2.7.4