Re: [patch 7/7] uml ubd: handle readonly status

Jens Axboe
2005-04-25T10:20:06Z

On Sun, Apr 24 2005, blaisorblade@yahoo.it wrote:
> @@ -1099,6 +1104,7 @@ static int prepare_request(struct reques
> if((rq_data_dir(req) == WRITE) && !dev->openflags.w){
> printk("Write attempted on readonly ubd device %s\n",
> disk->disk_name);
> + WARN_ON(1); /* This should be impossible now */
> end_request(req, 0);
> return(1);
> }

I don't think that's a sound change. The WARN_ON() is strictly only
really useful for when you need the stack trace for something
interesting. As the io happens async, you will get a boring trace that
doesn't contain any valuable information.

--
Jens Axboe