Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753719AbaAMQcP (ORCPT ); Mon, 13 Jan 2014 11:32:15 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:53413 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754126AbaAMQDt (ORCPT ); Mon, 13 Jan 2014 11:03:49 -0500 From: Luis Henriques To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Josh Durgin , Luis Henriques Subject: [PATCH 3.11 126/208] rbd: complete notifies before cleaning up osd_client and rbd_dev Date: Mon, 13 Jan 2014 15:59:27 +0000 Message-Id: <1389628849-1614-127-git-send-email-luis.henriques@canonical.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1389628849-1614-1-git-send-email-luis.henriques@canonical.com> References: <1389628849-1614-1-git-send-email-luis.henriques@canonical.com> X-Extended-Stable: 3.11 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.11.10.3 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Josh Durgin commit 9abc59908e0c5f983aaa91150da32d5b62cf60b7 upstream. To ensure rbd_dev is not used after it's released, flush all pending notify callbacks before calling rbd_dev_image_release(). No new notifies can be added to the queue at this point because the watch has already be unregistered with the osd_client. Signed-off-by: Josh Durgin Reviewed-by: Alex Elder Signed-off-by: Luis Henriques --- drivers/block/rbd.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 853e622..16f6966 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -5163,6 +5163,13 @@ static ssize_t rbd_remove(struct bus_type *bus, ret = rbd_dev_header_watch_sync(rbd_dev, false); if (ret) rbd_warn(rbd_dev, "failed to cancel watch event (%d)\n", ret); + + /* + * flush remaining watch callbacks - these must be complete + * before the osd_client is shutdown + */ + dout("%s: flushing notifies", __func__); + ceph_osdc_flush_notifies(&rbd_dev->rbd_client->client->osdc); rbd_dev_image_release(rbd_dev); module_put(THIS_MODULE); -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/