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unicore32: handle pgtable_page_ctor() fail 

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kirill A. Shutemov 2013-11-14 14:31:46 -08:00 committed by Linus Torvalds
parent 647f884e67
commit e90bedbb8a
1 changed files with 8 additions and 6 deletions
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14
arch/unicore32/include/asm/pgalloc.h
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@ -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;