Reviewed-by: Josh Durgin <[email protected]>
On 01/24/2013 08:34 AM, Alex Elder wrote:
Use the new object request tracking mechanism for handling a
notify_ack request.
Move the callback function below the definition of this so we don't
have to do a pre-declaration.
This resolves:
http://tracker.newdream.net/issues/3754
Signed-off-by: Alex Elder <[email protected]>
---
drivers/block/rbd.c | 76
+++++++++++++++++++++++++++++++++++++--------------
1 file changed, 55 insertions(+), 21 deletions(-)
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 8f659f3..e2b6230 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1347,27 +1347,6 @@ static int rbd_req_sync_notify_ack(struct
rbd_device *rbd_dev,
return ret;
}
-static void rbd_watch_cb(u64 ver, u64 notify_id, u8 opcode, void *data)
-{
- struct rbd_device *rbd_dev = (struct rbd_device *)data;
- u64 hver;
- int rc;
-
- if (!rbd_dev)
- return;
-
- dout("rbd_watch_cb %s notify_id=%llu opcode=%u\n",
- rbd_dev->header_name, (unsigned long long) notify_id,
- (unsigned int) opcode);
- rc = rbd_dev_refresh(rbd_dev, &hver);
- if (rc)
- rbd_warn(rbd_dev, "got notification but failed to "
- " update snaps: %d\n", rc);
-
- rbd_req_sync_notify_ack(rbd_dev, hver, notify_id);
-}
-
-
/*
* Synchronous osd object method call
*/
@@ -1466,6 +1445,7 @@ static void rbd_osd_req_callback(struct
ceph_osd_request *osd_req,
case CEPH_OSD_OP_WRITE:
rbd_osd_write_callback(obj_request, op);
break;
+ case CEPH_OSD_OP_NOTIFY_ACK:
case CEPH_OSD_OP_WATCH:
rbd_osd_trivial_callback(obj_request, op);
break;
@@ -1836,6 +1816,60 @@ static int rbd_img_request_submit(struct
rbd_img_request *img_request)
return 0;
}
+static int rbd_obj_notify_ack_sync(struct rbd_device *rbd_dev,
+ u64 ver, u64 notify_id)
+{
+ struct rbd_obj_request *obj_request;
+ struct ceph_osd_req_op *op;
+ struct ceph_osd_client *osdc;
+ int ret;
+
+ obj_request = rbd_obj_request_create(rbd_dev->header_name, 0, 0,
+ obj_req_nodata);
+ if (!obj_request)
+ return -ENOMEM;
+
+ ret = -ENOMEM;
+ op = rbd_osd_req_op_create(CEPH_OSD_OP_NOTIFY_ACK, notify_id, ver);
+ if (!op)
+ goto out;
+ obj_request->osd_req = rbd_osd_req_create(rbd_dev, false,
+ obj_request, op);
+ rbd_osd_req_op_destroy(op);
+ if (!obj_request->osd_req)
+ goto out;
+
+ osdc = &rbd_dev->rbd_client->client->osdc;
+ ret = rbd_obj_request_submit(osdc, obj_request);
+ if (!ret)
+ ret = rbd_obj_request_wait(obj_request);
+out:
+ rbd_obj_request_put(obj_request);
+
+ return ret;
+}
+
+static void rbd_watch_cb(u64 ver, u64 notify_id, u8 opcode, void *data)
+{
+ struct rbd_device *rbd_dev = (struct rbd_device *)data;
+ u64 hver;
+ int rc;
+
+ if (!rbd_dev)
+ return;
+
+ dout("rbd_watch_cb %s notify_id=%llu opcode=%u\n",
+ rbd_dev->header_name, (unsigned long long) notify_id,
+ (unsigned int) opcode);
+ rc = rbd_dev_refresh(rbd_dev, &hver);
+ if (rc)
+ rbd_warn(rbd_dev, "got notification but failed to "
+ " update snaps: %d\n", rc);
+
+ (void) rbd_req_sync_notify_ack; /* avoid a warning */
+ rbd_obj_notify_ack_sync(rbd_dev, hver, notify_id);
+}
+
/*
* Request sync osd watch/unwatch. The value of "start" determines
* whether a watch request is being initiated or torn down.
--
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