search for: kref_put_mutex

..._put_dma_resv() helper that wraps around kref_put_ww_mutex() > for drivers that needs to lock dma-resv on kref_put(). > > It's not possible to easily add this helper to kref.h because of the > headers inclusion dependency, hence add it to dma-resv.h. I was never really a big fan of kref_put_mutex() in the first place. The main advantage comes from the included memory barrier, but this actually doesn't work like most people think it works and is usually pretty dangerous. And IIRC this was done because of the some special behavior mutexes have with memory barriers and that isn't...