tile: handle pgtable_page_ctor() fail

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/arch/tile/mm/pgtable.c b/arch/tile/mm/pgtable.c
index 4fd9ec0b58ed..5e86eac4bfae 100644
--- a/arch/tile/mm/pgtable.c
+++ b/arch/tile/mm/pgtable.c
@@ -241,6 +241,11 @@ struct page *pgtable_alloc_one(struct mm_struct *mm, unsigned long address,
         if (p == NULL)
                 return NULL;
 
+        if (!pgtable_page_ctor(p)) {
+                __free_pages(p, L2_USER_PGTABLE_ORDER);
+                return NULL;
+        }
+
         /*
          * Make every page have a page_count() of one, not just the first.
          * We don't use __GFP_COMP since it doesn't look like it works
@@ -251,7 +256,6 @@ struct page *pgtable_alloc_one(struct mm_struct *mm, unsigned long address,
                 inc_zone_page_state(p+i, NR_PAGETABLE);
         }
 
-        pgtable_page_ctor(p);
         return p;
 }