nbd: use dev_err_ratelimited in io path
While doing stress tests we noticed that we'd get a lot of dmesg spam if
we suddenly disconnected the nbd device out of band. Rate limit the
messages in the io path in order to deal with this.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 84ea5c2..99c8446 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -219,7 +219,7 @@
unsigned long pflags = current->flags;
if (unlikely(!sock)) {
- dev_err(disk_to_dev(nbd->disk),
+ dev_err_ratelimited(disk_to_dev(nbd->disk),
"Attempted %s on closed socket in sock_xmit\n",
(send ? "send" : "recv"));
return -EINVAL;
@@ -302,7 +302,7 @@
result = sock_xmit(nbd, index, 1, &request, sizeof(request),
(type == NBD_CMD_WRITE) ? MSG_MORE : 0);
if (result <= 0) {
- dev_err(disk_to_dev(nbd->disk),
+ dev_err_ratelimited(disk_to_dev(nbd->disk),
"Send control failed (result %d)\n", result);
return -EIO;
}
@@ -501,14 +501,14 @@
struct nbd_sock *nsock;
if (index >= nbd->num_connections) {
- dev_err(disk_to_dev(nbd->disk),
- "Attempted send on invalid socket\n");
+ dev_err_ratelimited(disk_to_dev(nbd->disk),
+ "Attempted send on invalid socket\n");
goto error_out;
}
if (test_bit(NBD_DISCONNECTED, &nbd->runtime_flags)) {
- dev_err(disk_to_dev(nbd->disk),
- "Attempted send on closed socket\n");
+ dev_err_ratelimited(disk_to_dev(nbd->disk),
+ "Attempted send on closed socket\n");
goto error_out;
}
@@ -519,8 +519,8 @@
if (req->cmd_type == REQ_TYPE_FS &&
rq_data_dir(req) == WRITE &&
(nbd->flags & NBD_FLAG_READ_ONLY)) {
- dev_err(disk_to_dev(nbd->disk),
- "Write on read-only\n");
+ dev_err_ratelimited(disk_to_dev(nbd->disk),
+ "Write on read-only\n");
goto error_out;
}
@@ -530,13 +530,14 @@
mutex_lock(&nsock->tx_lock);
if (unlikely(!nsock->sock)) {
mutex_unlock(&nsock->tx_lock);
- dev_err(disk_to_dev(nbd->disk),
- "Attempted send on closed socket\n");
+ dev_err_ratelimited(disk_to_dev(nbd->disk),
+ "Attempted send on closed socket\n");
goto error_out;
}
if (nbd_send_cmd(nbd, cmd, index) != 0) {
- dev_err(disk_to_dev(nbd->disk), "Request send failed\n");
+ dev_err_ratelimited(disk_to_dev(nbd->disk),
+ "Request send failed\n");
req->errors++;
nbd_end_request(cmd);
}