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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2013-11-14 14:31:38 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-15 09:32:18 +0900
commit4f804943f99454ac79e0f448428447f1a72d09fc (patch)
treedaf81d67eeb5736b3bb227d948132306eafcb3d9 /arch/powerpc/mm
parentbc16640dce9035177c99d8fb11d3b94abe9f36c8 (diff)
downloadop-kernel-dev-4f804943f99454ac79e0f448428447f1a72d09fc.zip
op-kernel-dev-4f804943f99454ac79e0f448428447f1a72d09fc.tar.gz
powerpc: handle pgtable_page_ctor() fail
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/powerpc/mm')
-rw-r--r--arch/powerpc/mm/pgtable_32.c5
-rw-r--r--arch/powerpc/mm/pgtable_64.c7
2 files changed, 8 insertions, 4 deletions
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index 6c856fb..5b96017 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -121,7 +121,10 @@ pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
ptepage = alloc_pages(flags, 0);
if (!ptepage)
return NULL;
- pgtable_page_ctor(ptepage);
+ if (!pgtable_page_ctor(ptepage)) {
+ __free_page(ptepage);
+ return NULL;
+ }
return ptepage;
}
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index 536eec72..9d95786 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c
@@ -378,6 +378,10 @@ static pte_t *__alloc_for_cache(struct mm_struct *mm, int kernel)
__GFP_REPEAT | __GFP_ZERO);
if (!page)
return NULL;
+ if (!kernel && !pgtable_page_ctor(page)) {
+ __free_page(page);
+ return NULL;
+ }
ret = page_address(page);
spin_lock(&mm->page_table_lock);
@@ -392,9 +396,6 @@ static pte_t *__alloc_for_cache(struct mm_struct *mm, int kernel)
}
spin_unlock(&mm->page_table_lock);
- if (!kernel)
- pgtable_page_ctor(page);
-
return (pte_t *)ret;
}
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