[PATCH V3 5/7] IB/hfi1: Use the new FOLL_LONGTERM flag to get_user_pages_fast()
From: <hidden>
Date: 2019-03-28 16:46:07
Also in:
linux-mips, linux-mm, linux-rdma, linux-s390, linux-sh, linuxppc-dev, lkml, sparclinux
Subsystem:
infiniband subsystem, the rest · Maintainers:
Jason Gunthorpe, Leon Romanovsky, Linus Torvalds
From: Ira Weiny <redacted> Use the new FOLL_LONGTERM to get_user_pages_fast() to protect against FS DAX pages being mapped. Signed-off-by: Ira Weiny <redacted> --- 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