From: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Date: Thu, 14 Nov 2013 22:31:48 +0000 (-0800)
Subject: xtensa: handle pgtable_page_ctor() fail
X-Git-Tag: upstream/snapshot3+hdmi~3973^2~27
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8f43123d170ad9a6760e424af5bde7569fdd8c12;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

xtensa: handle pgtable_page_ctor() fail

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/arch/xtensa/include/asm/pgalloc.h b/arch/xtensa/include/asm/pgalloc.h
index 037671a..b8774f1 100644
--- a/arch/xtensa/include/asm/pgalloc.h
+++ b/arch/xtensa/include/asm/pgalloc.h
@@ -58,7 +58,10 @@ static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
 	if (!pte)
 		return NULL;
 	page = virt_to_page(pte);
-	pgtable_page_ctor(page);
+	if (!pgtable_page_ctor(page)) {
+		kmem_cache_free(pgtable_cache, pte);
+		return NULL;
+	}
 	return page;
 }