Re: [PATCH 1/1] IB/umem: use get_user_pages_fast() to pin DMA pages

[Jason Gunthorpe]

On Fri, Nov 08, 2019 at 06:04:34PM -0800, John Hubbard wrote:
> And get rid of the mmap_sem calls, as part of that. Note
> that get_user_pages_fast() will, if necessary, fall back to
> __gup_longterm_unlocked(), which takes the mmap_sem as needed.
> 
> Cc: Jason Gunthorpe <jgg@xxxxxxxx>
> Cc: Ira Weiny <ira.weiny@xxxxxxxxx>
> Signed-off-by: John Hubbard <jhubbard@xxxxxxxxxx>
> ---
>  drivers/infiniband/core/umem.c | 17 ++++++-----------
>  1 file changed, 6 insertions(+), 11 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>

This can go through Andrew's tree if he takes this larger series,
otherwise I'll grab it

Thanks,
Jason