On Tue, Feb 22, 2005 at 01:30:27PM -0800, Linus Torvalds wrote: > > We really have this already, and it's called "current->preempt". It > handles any lock at all, and doesn't add yet another special case to all > the architectures. > > Just do > > repeat: > down_read(¤t->mm->mmap_sem); > get_futex_key(...) etc. > queue_me(...) etc. > inc_preempt_count(); > ret = get_user(...); > dec_preempt_count();
Perhaps this should be preempt_disable .... preempt_enable. Otherwise, a preempt attempt in get_user would not be seen until some future preempt_enable was executed. Regards, Joe -- "Money can buy bandwidth, but latency is forever" -- John Mashey - 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/
