On Fri, Mar 02, 2018 at 02:21:40PM -0800, Dan Williams wrote: > They are indeed a hodge-podge. The problem is that the current > IS_DAX() is broken. So I'd like to propose fixing IS_DAX() with > IS_FSDAX() + IS_DEVDAX() for 4.16-rc4 and queue up these wider reworks > you propose for the next merge window.
The only thing broken about IS_DAX are the code elimination games based on the CONFIG_* flags. Remove those and just add proper stubs for the dax routines and everything will be fine for now until we can kill that inode flag. IS_FSDAX and IS_DEVDAX on the other hand are a giant mess that isn't helping anyone.