From patchwork Thu May 23 08:13:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Yan, Zheng" X-Patchwork-Id: 10957051 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7649F15A6 for ; Thu, 23 May 2019 08:13:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4DAAC2836F for ; Thu, 23 May 2019 08:13:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 420032837D; Thu, 23 May 2019 08:13:52 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DB1AB2836F for ; Thu, 23 May 2019 08:13:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726429AbfEWINu (ORCPT ); Thu, 23 May 2019 04:13:50 -0400 Received: from mx1.redhat.com ([209.132.183.28]:37358 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725814AbfEWINu (ORCPT ); Thu, 23 May 2019 04:13:50 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 13FE53082B5F for ; Thu, 23 May 2019 08:13:50 +0000 (UTC) Received: from zhyan-laptop.redhat.com (ovpn-12-163.pek2.redhat.com [10.72.12.163]) by smtp.corp.redhat.com (Postfix) with ESMTP id DA715619EF; Thu, 23 May 2019 08:13:47 +0000 (UTC) From: "Yan, Zheng" To: ceph-devel@vger.kernel.org Cc: idryomov@redhat.com, jlayton@redhat.com, "Yan, Zheng" Subject: [PATCH 1/8] ceph: fix error handling in ceph_get_caps() Date: Thu, 23 May 2019 16:13:38 +0800 Message-Id: <20190523081345.20410-1-zyan@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.45]); Thu, 23 May 2019 08:13:50 +0000 (UTC) Sender: ceph-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The function return 0 even when interrupted or try_get_cap_refs() return error. Introduce by commit 1199d7da2d "ceph: simplify arguments and return semantics of try_get_cap_refs" Signed-off-by: "Yan, Zheng" Reviewed-by: Jeff Layton --- fs/ceph/caps.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 72f8e1311392..079d0df9650c 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -2738,15 +2738,13 @@ int ceph_get_caps(struct ceph_inode_info *ci, int need, int want, _got = 0; ret = try_get_cap_refs(ci, need, want, endoff, false, &_got); - if (ret == -EAGAIN) { + if (ret == -EAGAIN) continue; - } else if (!ret) { - int err; - + if (!ret) { DEFINE_WAIT_FUNC(wait, woken_wake_function); add_wait_queue(&ci->i_cap_wq, &wait); - while (!(err = try_get_cap_refs(ci, need, want, endoff, + while (!(ret = try_get_cap_refs(ci, need, want, endoff, true, &_got))) { if (signal_pending(current)) { ret = -ERESTARTSYS; @@ -2756,14 +2754,16 @@ int ceph_get_caps(struct ceph_inode_info *ci, int need, int want, } remove_wait_queue(&ci->i_cap_wq, &wait); - if (err == -EAGAIN) + if (ret == -EAGAIN) continue; } - if (ret == -ESTALE) { - /* session was killed, try renew caps */ - ret = ceph_renew_caps(&ci->vfs_inode); - if (ret == 0) - continue; + if (ret < 0) { + if (ret == -ESTALE) { + /* session was killed, try renew caps */ + ret = ceph_renew_caps(&ci->vfs_inode); + if (ret == 0) + continue; + } return ret; }