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32f5faff69
Remove RW_COUNT() from the rwlock implementation. The idea was that it could be used as a generic wrapper for getting at the internal state of a rwlock. While a good idea it's proven problematic to keep it correct for multiple archs and internal implementation changes. In short it hasn't been worth the trouble. With that and simplicity in mind things have been updated to use the rwsem_is_locked() function instead of RW_COUNT for the RW_*_HELD() functions. As for rw_upgrade() it remains only implemented for the generic rwsem implemenation. It remains to be determined if its worth the effort of adding a custom implementation for each arch. |
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