On Tue, 03 Jul 2007 23:36:22 +0200 Morten Helgesen <[EMAIL PROTECTED]> wrote:
> /* > > Problems to take into account are: > > -1- Interrupts that empty part of the buffer. > -> -2- page faults on the access to userspace. > +> -2- Page faults on access to userspace. #2 no longer applies (don't before the caller) > > -3- Other processes that are also trying to do a "write". #3 no longer applies (locked by tty layer) > - /* get exclusive "write" access to this port (problem 3) */ > + /* Get exclusive "write" access to this port (problem 3) */ > /* This is not a spinlock because we can have a disk access (page > - fault) in copy_from_user */ No copy_from_user any more. Actually that locking code wants review and maybe removal so is another project altogether Definitely an improvement Acked-by: Alan Cox <[EMAIL PROTECTED]> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
