Manfred Spraul wrote:
> What if foo_exit() was already running when foo_open() was called?
> AFAICS foo_exit() must either unlink the driver from all lists
> (unregister_{filesystem,blkdev,chrdev}, netdev_unregister, ...) before
The places that look up entries in these "register"ed lists do so with
the big-kernel-lock, which also protects against module_{init,exit}.
I think the socket-type lookup didn't follow this at one point... not
sure if that got fixed.
The only problem is if module_init does something that sleeps (for instance
allocs non-atomic memory) before incrementing the module count, since the
sleep will give up the big-lock, and another thread can then rmmod
the driver (since it has a zero module count).
-Mitch
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This archive was generated by hypermail 2b29 : Fri Mar 31 2000 - 19:20:51 EST