diff options
| author | Josh Durgin <josh.durgin@inktank.com> | 2013-08-29 17:31:03 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-01-09 12:24:26 -0800 |
| commit | 282e0636dcf5ee3329d9266de64386f21dd4d7d6 (patch) | |
| tree | 0dec9896a763049f7f27f585af04f3263fdf7631 /drivers/block | |
| parent | a2e5951b11b406a83f84c1eb3b5d722491f4d883 (diff) | |
rbd: complete notifies before cleaning up osd_client and rbd_dev
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 <josh.durgin@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/rbd.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 1d29dab42c0..d9c3326c571 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -5150,6 +5150,13 @@ 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); ret = count; |