On Thu, 2007-07-05 at 19:36 +0400, Oleg Nesterov wrote: > So, __WORK_INITIALIZER() uses work_struct itself as a "struct lock_class_key" > ? > How so?
Well, this is for work_structs that are static (not dynamically allocated.) struct lock_class_key is just a single byte because its whole purpose is to be a unique pointer, there's nothing actually in it. Hence, taking the address of the work struct (when it's statically allocated) is a unique pointer just as well. johannes
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