Messages in this thread | | | Date | Sat, 28 Oct 2000 16:05:37 +0100 | From | Philipp Rumpf <> | Subject | Re: [PROPOSED PATCH] ATM refcount + firestream |
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On Sat, Oct 28, 2000 at 09:55:21AM -0400, Brian Gerst wrote: > Yes, but they can be called (and sleep) with module refcount == 0. This > is because the file descripter used to perform the ioctl isn't directly > associated with the network device, thereby not incrementing the > refcount on open.
According to my proposal, it is perfectly safe to call a function in a module while the module's use count is 0. This function would typically look like this:
foo() { MOD_INC_USE_COUNT;
copy_*_user() (or anything else that sleeps); MOD_DEC_USE_COUNT;
return bar; }
The only difference to the "old" module scheme is that the above currently isn't safe on SMP systems. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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