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Subject[PATCH V3 5/7] IB/hfi1: Use the new FOLL_LONGTERM flag to get_user_pages_fast()
Date
From: Ira Weiny <ira.weiny@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@intel.com>

---
Changes from V2
Per Dan Williams: set FOLL_LONGTERM on declaration line

drivers/infiniband/hw/hfi1/user_pages.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/hfi1/user_pages.c b/drivers/infiniband/hw/hfi1/user_pages.c
index 78ccacaf97d0..02eee8eff1db 100644
--- a/drivers/infiniband/hw/hfi1/user_pages.c
+++ b/drivers/infiniband/hw/hfi1/user_pages.c
@@ -104,9 +104,9 @@ int hfi1_acquire_user_pages(struct mm_struct *mm, unsigned long vaddr, size_t np
bool writable, struct page **pages)
{
int ret;
+ unsigned int gup_flags = FOLL_LONGTERM | (writable ? FOLL_WRITE : 0);

- ret = get_user_pages_fast(vaddr, npages, writable ? FOLL_WRITE : 0,
- pages);
+ ret = get_user_pages_fast(vaddr, npages, gup_flags, pages);
if (ret < 0)
return ret;

--
2.20.1
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