Bobby, On Wed, Feb 2, 2011 at 11:04 AM, Joonwoo Park <[email protected]> wrote: >> In ToUserDevice: It looks like the existing IOCTL isn't doing anything that >> requires locking, so you should be able to leave out the mutex. > > I don't think so... filp->private_data is not atomic on every platform. >
I have to double check tonight (I'm not accessing click source code at work) but I think it's possible I was wrong. I was thinking that filp->private_data is shared between different userspace open. But it's probably not true. I'll have look again. Thanks! Joonwoo _______________________________________________ click mailing list [email protected] https://amsterdam.lcs.mit.edu/mailman/listinfo/click
