diff options
| author | Josef Bacik <jbacik@fb.com> | 2016-12-05 16:20:29 -0500 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-12-08 15:28:09 -0700 |
| commit | a897b6664e9565c980f76af1c123cb0597d79822 (patch) | |
| tree | 7abf7529af56388742a140156cff7b3525cbaf15 /drivers/block/nbd.c | |
| parent | 20032ec38d1614f29c5a8e6cfc5b5326685fa99b (diff) | |
| download | linux-a897b6664e9565c980f76af1c123cb0597d79822.tar.bz2 | |
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>
Diffstat (limited to 'drivers/block/nbd.c')
| -rw-r--r-- | drivers/block/nbd.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 84ea5c2251e2..99c84468f154 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -219,7 +219,7 @@ static int sock_xmit(struct nbd_device *nbd, int index, int send, void *buf, 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 @@ static int nbd_send_cmd(struct nbd_device *nbd, struct nbd_cmd *cmd, int index) 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 @@ static void nbd_handle_cmd(struct nbd_cmd *cmd, int index) 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 @@ static void nbd_handle_cmd(struct nbd_cmd *cmd, int index) 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 @@ static void nbd_handle_cmd(struct nbd_cmd *cmd, int index) 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); } |