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

2019-03-22 Thread Dan Williams 
On Sun, Mar 17, 2019 at 7:36 PM  wrote:
>
> From: Ira Weiny 
>
> Use the new FOLL_LONGTERM to get_user_pages_fast() to protect against
> FS DAX pages being mapped.
>
> Signed-off-by: Ira Weiny 

Looks good modulo potential  __get_user_pages_fast() suggestion.

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

2019-03-17 Thread ira . weiny 
From: Ira Weiny 

Use the new FOLL_LONGTERM to get_user_pages_fast() to protect against
FS DAX pages being mapped.

Signed-off-by: Ira Weiny 
---
 drivers/infiniband/hw/qib/qib_user_sdma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/qib/qib_user_sdma.c 
b/drivers/infiniband/hw/qib/qib_user_sdma.c
index 31c523b2a9f5..b53cc0240e02 100644
--- a/drivers/infiniband/hw/qib/qib_user_sdma.c
+++ b/drivers/infiniband/hw/qib/qib_user_sdma.c
@@ -673,7 +673,7 @@ static int qib_user_sdma_pin_pages(const struct qib_devdata 
*dd,
else
j = npages;
 
-   ret = get_user_pages_fast(addr, j, 0, pages);
+   ret = get_user_pages_fast(addr, j, FOLL_LONGTERM, pages);
if (ret != j) {
i = 0;
j = ret;
-- 
2.20.1