Messages in this thread Patch in this message | | | From | ira.weiny@intel ... | Subject | [PATCH V3 5/7] IB/hfi1: Use the new FOLL_LONGTERM flag to get_user_pages_fast() | Date | Thu, 28 Mar 2019 01:44:20 -0700 |
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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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