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    Subject[PATCH 30/34] unicore32: handle pgtable_page_ctor() fail
    Date
    Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
    Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
    ---
    arch/unicore32/include/asm/pgalloc.h | 14 ++++++++------
    1 file changed, 8 insertions(+), 6 deletions(-)

    diff --git a/arch/unicore32/include/asm/pgalloc.h b/arch/unicore32/include/asm/pgalloc.h
    index 0213e373a8..2e02d1356f 100644
    --- a/arch/unicore32/include/asm/pgalloc.h
    +++ b/arch/unicore32/include/asm/pgalloc.h
    @@ -51,12 +51,14 @@ pte_alloc_one(struct mm_struct *mm, unsigned long addr)
    struct page *pte;

    pte = alloc_pages(PGALLOC_GFP, 0);
    - if (pte) {
    - if (!PageHighMem(pte)) {
    - void *page = page_address(pte);
    - clean_dcache_area(page, PTRS_PER_PTE * sizeof(pte_t));
    - }
    - pgtable_page_ctor(pte);
    + if (!pte)
    + return NULL;
    + if (!PageHighMem(pte)) {
    + void *page = page_address(pte);
    + clean_dcache_area(page, PTRS_PER_PTE * sizeof(pte_t));
    + }
    + if (!pgtable_page_ctor(pte)) {
    + __free_page(pte);
    }

    return pte;
    --
    1.8.4.rc3


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