Re: AZFS file system proposal

Am Wed, 09 Jul 2008 18:58:38 +1000
schrieb Benjamin Herrenschmidt [off-list ref]:

On Tue, 2008-07-01 at 16:59 +0200, Arnd Bergmann wrote:

quoted

I wouldn't hold up merging the file system for this problem, but
until it is solved, the Kconfig entry should probably have
a "depends on PPC".

=20
Better, use an ifdef for powerpc flags, and #else to pgprot_noncached.

Thank you Ben. Then, how about this?

azfs_mmap(struct file *file, struct vm_area_struct *vma)
{
...
...
...
#ifdef CONFIG_PPC
	pgprot_t page_prot;
#endif
...
...
...
#ifdef CONFIG_PPC
	page_prot =3D pgprot_val(vma->vm_page_prot);
	page_prot |=3D (_PAGE_NO_CACHE | _PAGE_RW);
	page_prot &=3D ~_PAGE_GUARDED;
	vma->vm_page_prot =3D __pgprot(page_prot);
#else
	vma->vm_page_prot =3D pgprot_noncached(vma->vm_page_prot);
#endif
...
...
...

--=20
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