diff options
| author | Sean Paul <seanpaul@chromium.org> | 2019-03-06 09:22:18 -0500 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2019-03-06 09:22:18 -0500 |
| commit | cd7d3a1bb42e0756b17ccfafbd956ca7ed757846 (patch) | |
| tree | fb76fd0ccaaaa3f27ef0a06ecf3d04ebe9d4025d /net/xdp/xdp_umem.c | |
| parent | 6b5c029df5e40704a6642e026e709dd0dec44622 (diff) | |
| parent | 4b057e73f28f1df13b77b77a52094238ffdf8abd (diff) | |
Merge drm/drm-next into drm-misc-next
Picking up v5.0 + missed misc-fixes from last release
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Diffstat (limited to 'net/xdp/xdp_umem.c')
| -rw-r--r-- | net/xdp/xdp_umem.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c index d4de871e7d4d..37e1fe180769 100644 --- a/net/xdp/xdp_umem.c +++ b/net/xdp/xdp_umem.c @@ -125,9 +125,10 @@ int xdp_umem_assign_dev(struct xdp_umem *umem, struct net_device *dev, return 0; err_unreg_umem: - xdp_clear_umem_at_qid(dev, queue_id); if (!force_zc) err = 0; /* fallback to copy mode */ + if (err) + xdp_clear_umem_at_qid(dev, queue_id); out_rtnl_unlock: rtnl_unlock(); return err; @@ -259,10 +260,10 @@ static int xdp_umem_pin_pages(struct xdp_umem *umem) if (!umem->pgs) return -ENOMEM; - down_write(¤t->mm->mmap_sem); - npgs = get_user_pages(umem->address, umem->npgs, - gup_flags, &umem->pgs[0], NULL); - up_write(¤t->mm->mmap_sem); + down_read(¤t->mm->mmap_sem); + npgs = get_user_pages_longterm(umem->address, umem->npgs, + gup_flags, &umem->pgs[0], NULL); + up_read(¤t->mm->mmap_sem); if (npgs != umem->npgs) { if (npgs >= 0) { |