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Subject[PATCH 27/34] sparc: handle pgtable_page_ctor() fail
Date
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
---
arch/sparc/mm/init_64.c | 11 ++++++-----
arch/sparc/mm/srmmu.c | 5 ++++-
2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index ed82edad1a..d6de9353ee 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -2519,12 +2519,13 @@ pgtable_t pte_alloc_one(struct mm_struct *mm,
return pte;

page = __alloc_for_cache(mm);
- if (page) {
- pgtable_page_ctor(page);
- pte = (pte_t *) page_address(page);
+ if (!page)
+ return NULL;
+ if (!pgtable_page_ctor(page)) {
+ free_hot_cold_page(page, 0);
+ return NULL;
}
-
- return pte;
+ return (pte_t *) page_address(page);
}

void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c
index 5d721df48a..869023abe5 100644
--- a/arch/sparc/mm/srmmu.c
+++ b/arch/sparc/mm/srmmu.c
@@ -345,7 +345,10 @@ pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
if ((pte = (unsigned long)pte_alloc_one_kernel(mm, address)) == 0)
return NULL;
page = pfn_to_page(__nocache_pa(pte) >> PAGE_SHIFT);
- pgtable_page_ctor(page);
+ if (!pgtable_page_ctor(page)) {
+ __free_page(page);
+ return NULL;
+ }
return page;
}

--
1.8.4.rc3


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