Re: [PATCH 11/19] net/xdp: set FOLL_PIN via pin_user_pages()
From: Björn Töpel <hidden>
Date: 2019-11-02 11:02:00
Also in:
bpf, dri-devel, kvm, linux-block, linux-doc, linux-fsdevel, linux-kselftest, linux-media, linux-mm, linux-rdma, linuxppc-dev, lkml
On 2019-10-30 23:49, John Hubbard wrote:
Convert net/xdp to use the new pin_longterm_pages() call, which sets FOLL_PIN. Setting FOLL_PIN is now required for code that requires tracking of pinned pages. Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Acked-by: Björn Töpel <redacted>
quoted hunk ↗ jump to hunk
--- net/xdp/xdp_umem.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c index 16d5f353163a..4d56dfb1139a 100644 --- a/net/xdp/xdp_umem.c +++ b/net/xdp/xdp_umem.c@@ -285,8 +285,8 @@ static int xdp_umem_pin_pages(struct xdp_umem *umem) return -ENOMEM; down_read(¤t->mm->mmap_sem); - npgs = get_user_pages(umem->address, umem->npgs, - gup_flags | FOLL_LONGTERM, &umem->pgs[0], NULL); + npgs = pin_longterm_pages(umem->address, umem->npgs, gup_flags, + &umem->pgs[0], NULL); up_read(¤t->mm->mmap_sem); if (npgs != umem->npgs) {