提交 f84c914b 编写于 作者: K Kirill A. Shutemov 提交者: Linus Torvalds

m68k: handle pgtable_page_ctor() fail

Signed-off-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 7251ab6b
......@@ -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) {
......
......@@ -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;
}
......
......@@ -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;
}
......
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