On Wed, 2008-04-09 at 04:24 -0400, Christoph Hellwig wrote:
quoted text
> > +#ifdef CONFIG_MMU
> >  	.mmap		= nfs_file_mmap,
> > +#else
> > +	.mmap		= generic_file_mmap,
> > +#endif
> 
> This is with almost 100% chance wrong.  It might get you a kernel that
> compiles but none where mmap actually works.  Just disable mmap on nfs
> for mmu-less systems until someone hacks up a proper mmu-less mmap
> method for nfs.

That is what this does. For the case of no mmu, generic_file_mmap()
compiles into a 'return -ENOSYS;'

-- 
Trond Myklebust
Linux NFS client maintainer

NetApp
Trond.Myklebust@netapp.com
www.netapp.com
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