On Tue, Apr 25, 2006 at 08:53:16PM +0400, Artem B. Bityutskiy wrote: > Hello, > > last time I tried to use "bare" sysfs functions to create my sysfs > hierarchy I ended up with a problem that the module refcount is not > increased when those sysfs files are opened. So I could open a sysfs > file from userspace, do rmmod and enjoy oops. > > Then I started using the class and class_device stuff, which have an > .owner field, and all became fine. > > I'm not sure if this is a problem of sysfs, but I suspect it could take > care of module refcount better. > > In your patch, I looked for THIS_MODULE pattern and did not find. I did > not try, but I suspect your code is not devoid of the problem I > described. So, this is just FYI and may be not the case. Others have also alluded to /sys/fs/ races that we'll probably need to resolve. In this case the question is more about umount than rmmod since the mount should reference the module. Thanks, Dave - 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
