From 79e3057c4c9d32b88e6745fd220d91b0a8b2030b Mon Sep 17 00:00:00 2001 From: Yehuda Sadeh Date: Tue, 12 Jul 2011 16:56:57 -0700 Subject: rbd: cancel watch request when releasing the device We were missing this cleanup, so when a device was released the osd didn't clean up its watchers list, so following notifications could be slow as osd needed to timeout on the client. Signed-off-by: Yehuda Sadeh --- drivers/block/rbd.c | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 1278098624e..7392d7af7ea 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1253,6 +1253,35 @@ fail: return ret; } +/* + * Request sync osd unwatch + */ +static int rbd_req_sync_unwatch(struct rbd_device *dev, + const char *obj) +{ + struct ceph_osd_req_op *ops; + + int ret = rbd_create_rw_ops(&ops, 1, CEPH_OSD_OP_WATCH, 0); + if (ret < 0) + return ret; + + ops[0].watch.ver = 0; + ops[0].watch.cookie = cpu_to_le64(dev->watch_event->cookie); + ops[0].watch.flag = 0; + + ret = rbd_req_sync_op(dev, NULL, + CEPH_NOSNAP, + 0, + CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK, + ops, + 1, obj, 0, 0, NULL, NULL, NULL); + + rbd_destroy_ops(ops); + ceph_osdc_cancel_event(dev->watch_event); + dev->watch_event = NULL; + return ret; +} + struct rbd_notify_info { struct rbd_device *dev; }; @@ -2290,7 +2319,7 @@ static void rbd_dev_release(struct device *dev) ceph_osdc_unregister_linger_request(&rbd_dev->client->osdc, rbd_dev->watch_request); if (rbd_dev->watch_event) - ceph_osdc_cancel_event(rbd_dev->watch_event); + rbd_req_sync_unwatch(rbd_dev, rbd_dev->obj_md_name); rbd_put_client(rbd_dev); -- cgit v1.2.3-70-g09d2