diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-05 09:27:05 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-05 09:27:05 +0200 |
| commit | 8bc39bca5e3e8da0d62f7f4d67fdbeecab02b350 (patch) | |
| tree | ac5df85133c64167381acb33086e154724148dc2 /drivers/infiniband/core/umem_odp.c | |
| parent | 094094a9373fbea80ec00714eed5c24f6fd39ecf (diff) | |
| parent | 3c2993b8c6143d8a5793746a54eba8f86f95240f (diff) | |
Merge 4.12-rc4 into tty-next
We want the tty locking fix in here, so that maybe we can finally get it
fixed for real...
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/infiniband/core/umem_odp.c')
| -rw-r--r-- | drivers/infiniband/core/umem_odp.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/infiniband/core/umem_odp.c b/drivers/infiniband/core/umem_odp.c index 0780b1afefa9..8c4ec564e495 100644 --- a/drivers/infiniband/core/umem_odp.c +++ b/drivers/infiniband/core/umem_odp.c @@ -321,11 +321,15 @@ int ib_umem_odp_get(struct ib_ucontext *context, struct ib_umem *umem, struct vm_area_struct *vma; struct hstate *h; + down_read(&mm->mmap_sem); vma = find_vma(mm, ib_umem_start(umem)); - if (!vma || !is_vm_hugetlb_page(vma)) + if (!vma || !is_vm_hugetlb_page(vma)) { + up_read(&mm->mmap_sem); return -EINVAL; + } h = hstate_vma(vma); umem->page_shift = huge_page_shift(h); + up_read(&mm->mmap_sem); umem->hugetlb = 1; } else { umem->hugetlb = 0; |