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Diffstat (limited to 'mm/hmm.c')
-rw-r--r--mm/hmm.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/mm/hmm.c b/mm/hmm.c
index 9b6a8a26a1fa..280585833adf 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -83,9 +83,6 @@ static int hmm_vma_fault(unsigned long addr, unsigned long end,
WARN_ON_ONCE(!required_fault);
hmm_vma_walk->last = addr;
- if (!vma)
- return -EFAULT;
-
if (required_fault & HMM_NEED_WRITE_FAULT) {
if (!(vma->vm_flags & VM_WRITE))
return -EPERM;
@@ -170,6 +167,11 @@ static int hmm_vma_walk_hole(unsigned long addr, unsigned long end,
npages = (end - addr) >> PAGE_SHIFT;
pfns = &range->pfns[i];
required_fault = hmm_range_need_fault(hmm_vma_walk, pfns, npages, 0);
+ if (!walk->vma) {
+ if (required_fault)
+ return -EFAULT;
+ return hmm_pfns_fill(addr, end, range, HMM_PFN_ERROR);
+ }
if (required_fault)
return hmm_vma_fault(addr, end, required_fault, walk);
hmm_vma_walk->last = addr;