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[POWERPC] Fix return from pte_alloc_one() in out-of-memory case

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pte_alloc_one() is expected to return NULL if out of memory.
But it returns virt_to_page(NULL), which is not NULL.
This fixes it.

Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Akinobu Mita <mita@fixstars.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Akinobu Mita 2007-05-29 20:46:51 +10:00 committed by Paul Mackerras
parent 66b30922c8
commit a4c28ab744
1 changed files with 2 additions and 1 deletions
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3
include/asm-powerpc/pgalloc-64.h
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@ -90,7 +90,8 @@ static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
static inline struct page *pte_alloc_one(struct mm_struct *mm,
unsigned long address)
{
return virt_to_page(pte_alloc_one_kernel(mm, address));
pte_t *pte = pte_alloc_one_kernel(mm, address);
return pte ? virt_to_page(pte) : NULL;
}
static inline void pte_free_kernel(pte_t *pte)