On Thu, May 03, 2018 at 05:06:37PM -0700, Dan Williams wrote: > Similar to the ->copy_from_iter() operation, a platform may want to > deploy an architecture or device specific routine for handling reads > from a dax_device like /dev/pmemX. On x86 this routine will point to a > machine check safe version of copy_to_iter(). For now, add the plumbing > to device-mapper and the dax core. > > Cc: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx> > Cc: Mike Snitzer <snitzer@xxxxxxxxxx> > Cc: Christoph Hellwig <hch@xxxxxx> > Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx> Looks good to me. Reviewed-by: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>