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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2013-11-14 14:31:34 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-15 09:32:17 +0900
commitf84c914b986ed2ec4ffaa5672b423b1f6b65519d (patch)
treec7bbfffe5499be53b9faf6364a5aeb90bf1ffdbb
parent7251ab6b86179f195b3f4b56d57ce9dc7a725409 (diff)
m68k: handle pgtable_page_ctor() fail
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--arch/m68k/include/asm/mcf_pgalloc.h4
-rw-r--r--arch/m68k/include/asm/motorola_pgalloc.h8
-rw-r--r--arch/m68k/include/asm/sun3_pgalloc.h5
3 files changed, 14 insertions, 3 deletions
diff --git a/arch/m68k/include/asm/mcf_pgalloc.h b/arch/m68k/include/asm/mcf_pgalloc.h
index 313f3dd23cdc..f9924fbcfe42 100644
--- a/arch/m68k/include/asm/mcf_pgalloc.h
+++ b/arch/m68k/include/asm/mcf_pgalloc.h
@@ -56,6 +56,10 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm,
if (!page)
return NULL;
+ if (!pgtable_page_ctor(page)) {
+ __free_page(page);
+ return NULL;
+ }
pte = kmap(page);
if (pte) {
diff --git a/arch/m68k/include/asm/motorola_pgalloc.h b/arch/m68k/include/asm/motorola_pgalloc.h
index 2f02f264e694..24bcba496c75 100644
--- a/arch/m68k/include/asm/motorola_pgalloc.h
+++ b/arch/m68k/include/asm/motorola_pgalloc.h
@@ -29,18 +29,22 @@ static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
{
- struct page *page = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
+ struct page *page;
pte_t *pte;
+ page = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
if(!page)
return NULL;
+ if (!pgtable_page_ctor(page)) {
+ __free_page(page);
+ return NULL;
+ }
pte = kmap(page);
__flush_page_to_ram(pte);
flush_tlb_kernel_page(pte);
nocache_page(pte);
kunmap(page);
- pgtable_page_ctor(page);
return page;
}
diff --git a/arch/m68k/include/asm/sun3_pgalloc.h b/arch/m68k/include/asm/sun3_pgalloc.h
index 48d80d5a666f..f868506e3350 100644
--- a/arch/m68k/include/asm/sun3_pgalloc.h
+++ b/arch/m68k/include/asm/sun3_pgalloc.h
@@ -59,7 +59,10 @@ static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
return NULL;
clear_highpage(page);
- pgtable_page_ctor(page);
+ if (!pgtable_page_ctor(page)) {
+ __free_page(page);
+ return NULL;
+ }
return page;
}