On Tue, Nov 04, 2014 at 11:52:22AM -0800, Andy Lutomirski wrote: > Let me try again, though: what if a chardev inode replaced i_cdev with > NULL and dropped its kobj reference in iput_final? This would add a > bit over overhead to things that repeatedly open and close the same > device node, but I doubt this matters much. How is it different from what Jan proposed? The whole problem is that iput_final() is too late. We could clean the reference on close, all right, and have it looked up again on every open, but I'm not at all sure that situation with opening/closing cdev is never a hot path, especially with udev playing silly buggers, etc. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
