s390 didn't return 0 in that case, if it's rolling back the *nr
pointer it should also return zero to avoid adding pages to the array
at the wrong offset.
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
---
arch/s390/mm/gup.c | 21 +++++++++++----------
1 files changed, 11 insertions(+), 10 deletions(-)
diff --git a/arch/s390/mm/gup.c b/arch/s390/mm/gup.c
index 668dda9..da33a02 100644
--- a/arch/s390/mm/gup.c
+++ b/arch/s390/mm/gup.c
@@ -93,16 +93,17 @@ static inline int gup_huge_pmd(pmd_t *pmdp, pmd_t pmd, unsigned long addr,
*nr -= refs;
while (refs--)
put_page(head);
- } else {
- /*
- * Any tail page need their mapcount reference taken
- * before we return.
- */
- while (refs--) {
- if (PageTail(tail))
- get_huge_page_tail(tail);
- tail++;
- }
+ return 0;
+ }
+
+ /*
+ * Any tail page need their mapcount reference taken before we
+ * return.
+ */
+ while (refs--) {
+ if (PageTail(tail))
+ get_huge_page_tail(tail);
+ tail++;
}
return 1;
--
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