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NOMMU: Stub out vm_get_page_prot() if there's no MMU 

Stub out vm_get_page_prot() if there's no MMU.

This was added by commit 804af2cf6e ("[AGPGART] remove private page
protection map") and is used in commit c07fbfd17e ("fbmem: VM_IO set,
but not propagated") in the fbmem video driver, but the function doesn't
exist on NOMMU, resulting in an undefined symbol at link time.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Howells 2010-08-26 16:00:34 +01:00 committed by Linus Torvalds
parent 0a3b6e452b
commit bad849b3dc
1 changed files with 8 additions and 0 deletions
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8
include/linux/mm.h
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@ -1363,7 +1363,15 @@ static inline unsigned long vma_pages(struct vm_area_struct *vma)
return (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
}
#ifdef CONFIG_MMU
pgprot_t vm_get_page_prot(unsigned long vm_flags);
#else
static inline pgprot_t vm_get_page_prot(unsigned long vm_flags)
{
return __pgprot(0);
}
#endif
struct vm_area_struct *find_extend_vma(struct mm_struct *, unsigned long addr);
int remap_pfn_range(struct vm_area_struct *, unsigned long addr,
unsigned long pfn, unsigned long size, pgprot_t);