Cornelia Huck wrote:
On Sat, 31 Mar 2007 12:12:48 +0900,
Tejun Heo <[EMAIL PROTECTED]> wrote:
Hm, but as long as dk0 is registered, it can be looked up and someone
could get a reference on it.
Yeah, exactly. That's why any getting any kobject reference backed by a
module must be accompanied by try_module_get().
int mydrv_get_dk(struct dk *dk)
{
rc = try_module_get(mydrv);
if (rc)
return rc;
kobject_get(&dk->kobj);
return 0;
}
This works if the caller always knows which module to grab (I was
thinking about some tree-walking code).
Yeah, that's why we have so many ->owner's and getting it wrong results
in jumping to non-existent address.
--
tejun
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