99b7623380
Setting ->owner as done currently (pde->owner = THIS_MODULE) is racy as correctly noted at bug #12454. Someone can lookup entry with NULL ->owner, thus not pinning enything, and release it later resulting in module refcount underflow. We can keep ->owner and supply it at registration time like ->proc_fops and ->data. But this leaves ->owner as easy-manipulative field (just one C assignment) and somebody will forget to unpin previous/pin current module when switching ->owner. ->proc_fops is declared as "const" which should give some thoughts. ->read_proc/->write_proc were just fixed to not require ->owner for protection. rmmod'ed directories will be empty and return "." and ".." -- no harm. And directories with tricky enough readdir and lookup shouldn't be modular. We definitely don't want such modular code. Removing ->owner will also make PDE smaller. So, let's nuke it. Kudos to Jeff Layton for reminding about this, let's say, oversight. http://bugzilla.kernel.org/show_bug.cgi?id=12454 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> |
||
|---|---|---|
| .. | ||
| ircomm | ||
| irlan | ||
| irnet | ||
| af_irda.c | ||
| discovery.c | ||
| irda_device.c | ||
| iriap.c | ||
| iriap_event.c | ||
| irias_object.c | ||
| irlap.c | ||
| irlap_event.c | ||
| irlap_frame.c | ||
| irlmp.c | ||
| irlmp_event.c | ||
| irlmp_frame.c | ||
| irmod.c | ||
| irnetlink.c | ||
| irproc.c | ||
| irqueue.c | ||
| irsysctl.c | ||
| irttp.c | ||
| Kconfig | ||
| Makefile | ||
| parameters.c | ||
| qos.c | ||
| timer.c | ||
| wrapper.c | ||