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| author | David Howells <dhowells@redhat.com> | 2010-08-26 16:00:34 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-28 14:01:03 -0700 |
| commit | bad849b3dc0fae1297c8d47f846f8d202a6145ed (patch) | |
| tree | d3802e46cbda7f6df30a9b0378e15a8343572a19 /include/linux/mm.h | |
| parent | 0a3b6e452b403f6e0cf3000da87b19e0fd9c4ba3 (diff) | |
| download | lwn-bad849b3dc0fae1297c8d47f846f8d202a6145ed.tar.gz lwn-bad849b3dc0fae1297c8d47f846f8d202a6145ed.zip | |
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 804af2cf6e7a ("[AGPGART] remove private page
protection map") and is used in commit c07fbfd17e61 ("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>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 831c693416b2..e6b1210772ce 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -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); |