On Mon, Sep 18, 2017 at 09:45:57AM -0600, Michael Moy wrote: > The write hint needs to be copied to the mapped filesystem > so it can be passed down to the nvme device driver. > > v2: fix tabs in the email If you want the write hint for buffered I/O you need to set it on the inode using F_SET_RW_HINT. With your patch we'd magically move the file hint to the inode hint on each write.