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authorAndrea Arcangeli <aarcange@redhat.com>2017-02-23 02:42:15 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-23 03:41:28 +0300
commita94720bf821dd63e72176da5f423ba7935dde67d (patch)
treecf518943eefeb9ce2ae619930897c4ef9fb4fae4 /mm/userfaultfd.c
parent8474901a33d8a27958bfa99e78736863abd67874 (diff)
downloadlinux-a94720bf821dd63e72176da5f423ba7935dde67d.tar.xz
userfaultfd: use vma_is_anonymous
Cleanup the vma->vm_ops usage. Side note: it would be more robust if vma_is_anonymous() would also check that vm_flags hasn't VM_PFNMAP set. Link: http://lkml.kernel.org/r/20161216144821.5183-5-aarcange@redhat.com Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Michael Rapoport <RAPOPORT@il.ibm.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/userfaultfd.c')
-rw-r--r--mm/userfaultfd.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c
index af817e5060fb..9c2ed70ac78d 100644
--- a/mm/userfaultfd.c
+++ b/mm/userfaultfd.c
@@ -197,7 +197,7 @@ retry:
* FIXME: only allow copying on anonymous vmas, tmpfs should
* be added.
*/
- if (dst_vma->vm_ops)
+ if (!vma_is_anonymous(dst_vma))
goto out_unlock;
/*