On Thu, Mar 24, 2016 at 05:17:30PM -0600, Vishal Verma wrote:
dax_do_io (called for read() or write() for a dax file system) may
in the presence of bad blocks or media errors. Since we expect that a
write should clear media errors on nvdimms, make dax_do_io fall back to
the direct_IO path, which will send down a bio to the driver, which can
then attempt to clear the error.
Leave the fallback on -EIO to the callers please. They generally call
__blockdev_direct_IO anyway, so it should actually become simpler that