# Re: \[PATCH 0/3\] Add gup fast + longterm and use it in HFI1

- From: Davidlohr Bueso \<dave@stgolabs.net\>
- Date: 2019-02-11 20:34:33 
- List: netdev
- Page: https://ratatoskr.run/netdev/2019/02/5510641
- Thread: https://ratatoskr.run/linux-rdma/2019/02/5510615/t.md

```text
On Mon, 11 Feb 2019, ira.weiny@intel.com wrote:
>Ira Weiny (3):
>  mm/gup: Change "write" parameter to flags
>  mm/gup: Introduce get_user_pages_fast_longterm()
>  IB/HFI1: Use new get_user_pages_fast_longterm()

Out of curiosity, are you planning on having all rdma drivers
use get_user_pages_fast_longterm()? Ie:

hw/mthca/mthca_memfree.c:       ret = get_user_pages_fast(uaddr & PAGE_MASK, 1, FOLL_WRITE, pages);
hw/qib/qib_user_sdma.c:         ret = get_user_pages_fast(addr, j, 0, pages);

Thanks,
Davidlohr
```