Stub out the whole function and assign NULL to the .hugetlb_entry method
if CONFIG_HUGETLB_PAGE is not set, as the method won't ever be called in
that case.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
mm/hmm.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/mm/hmm.c b/mm/hmm.c
index f4e90ea5779f..2b56a4af1001 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -769,11 +769,11 @@ static int hmm_vma_walk_pud(pud_t *pudp, unsigned long start, unsigned long end,
#define hmm_vma_walk_pud NULL
#endif
+#ifdef CONFIG_HUGETLB_PAGE
static int hmm_vma_walk_hugetlb_entry(pte_t *pte, unsigned long hmask,
unsigned long start, unsigned long end,
struct mm_walk *walk)
{
-#ifdef CONFIG_HUGETLB_PAGE
unsigned long addr = start, i, pfn;
struct hmm_vma_walk *hmm_vma_walk = walk->private;
struct hmm_range *range = hmm_vma_walk->range;
@@ -812,10 +812,10 @@ static int hmm_vma_walk_hugetlb_entry(pte_t *pte, unsigned long hmask,
return hmm_vma_walk_hole_(addr, end, fault, write_fault, walk);
return ret;
-#else /* CONFIG_HUGETLB_PAGE */
- return -EINVAL;
-#endif
}
+#else
+#define hmm_vma_walk_hugetlb_entry NULL
+#endif /* CONFIG_HUGETLB_PAGE */
static void hmm_pfns_clear(struct hmm_range *range,
uint64_t *pfns,
--
2.20.1
