[RESEND 6/7] IB/qib: Use the new FOLL_LONGTERM flag to get_user_pages_fast()

[Dan Williams]

On Sun, Mar 17, 2019 at 7:36 PM <ira.weiny at intel.com> wrote:
>
> From: Ira Weiny <ira.weiny at intel.com>
>
> Use the new FOLL_LONGTERM to get_user_pages_fast() to protect against
> FS DAX pages being mapped.
>
> Signed-off-by: Ira Weiny <ira.weiny at intel.com>

Looks good modulo potential  __get_user_pages_fast() suggestion.