Re: [patch - repost] do_no_pfn handler

[Nick Piggin <nickpiggin@yahoo.com.au>]

Jes Sorensen wrote:

> --- linux-2.6.orig/include/linux/mm.h
> +++ linux-2.6/include/linux/mm.h
> @@ -199,6 +199,7 @@
>  	void (*open)(struct vm_area_struct * area);
>  	void (*close)(struct vm_area_struct * area);
>  	struct page * (*nopage)(struct vm_area_struct * area, unsigned long address, int *type);
> +	long (*nopfn)(struct vm_area_struct * area, unsigned long address);

Minor nit: make this unsigned long?

>  	int (*populate)(struct vm_area_struct * area, unsigned long address, unsigned long len, pgprot_t prot, unsigned long pgoff, int nonblock);
>  #ifdef CONFIG_NUMA
>  	int (*set_policy)(struct vm_area_struct *vma, struct mempolicy *new);
> @@ -612,6 +613,12 @@
>  #define NOPAGE_OOM	((struct page *) (-1))
>  
>  /*
> + * Error return values for the *_nopfn functions
> + */
> +#define NOPFN_SIGBUS	((unsigned long) -1)
> +#define NOPFN_OOM	((unsigned long) -2)

--
SUSE Labs, Novell Inc.
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