rbd: pull rbd_img_request_create() dout out into the callers

Make it more informative: log op_type, offset and length for block
layer requests and initiating obj_req for child requests.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 69db7385c8df..7c4350c0fb77 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1754,8 +1754,6 @@ static struct rbd_img_request *rbd_img_request_create(
         mutex_init(&img_request->state_mutex);
         kref_init(&img_request->kref);
 
-        dout("%s: rbd_dev %p %s -> img %p\n", __func__, rbd_dev,
-             obj_op_name(op_type), img_request);
         return img_request;
 }
 
@@ -2944,6 +2942,9 @@ static int rbd_obj_read_from_parent(struct rbd_obj_request *obj_req)
         __set_bit(IMG_REQ_CHILD, &child_img_req->flags);
         child_img_req->obj_request = obj_req;
 
+        dout("%s child_img_req %p for obj_req %p\n", __func__, child_img_req,
+             obj_req);
+
         if (!rbd_img_is_write(img_req)) {
                 switch (img_req->data_type) {
                 case OBJ_REQUEST_BIO:
@@ -4877,6 +4878,9 @@ static void rbd_queue_workfn(struct work_struct *work)
         img_request->rq = rq;
         snapc = NULL; /* img_request consumes a ref */
 
+        dout("%s rbd_dev %p img_req %p %s %llu~%llu\n", __func__, rbd_dev,
+             img_request, obj_op_name(op_type), offset, length);
+
         if (op_type == OBJ_OP_DISCARD || op_type == OBJ_OP_ZEROOUT)
                 result = rbd_img_fill_nodata(img_request, offset, length);
         else