On Tue, Sep 12, 2023 at 11:03:42AM +0200, Peter Zijlstra wrote: > If not, then sure we can do this; it's not like I managed to get rid of > muteX_is_locked() -- and I actually tried at some point :/ > > And just now I grepped for it, and look what I find: > > drivers/hid/hid-nintendo.c: if (unlikely(mutex_is_locked(&ctlr->output_mutex))) { > drivers/nvdimm/btt.c: if (mutex_is_locked(&arena->err_lock) > > And there's more :-( Are these actually abuse? I looked at these two, and they both seem to be asking "Does somebody else currently have this mutex?" rather than "Do I have this mutex?".