d9b8d0da40
kern_addr_valid is currently only being used in kmem_ptr_validate which is making some vague attempt at verfying the validity of an address. Only IA-64, PARISC and x86-64 actually make some actual effort to verify the validity of the pointer. Most architecture definitions of kern_addr_valid() just define it as 1; the Alpha and CONFIG_DISCONTIGMEM on i386 and MIPS even as 0; the 0-definition will result in kmem_ptr_validate always failing which in turn will cause d_validate to always fail. d_validate's only two users are smbfs and ncpfs, so the 0 definition ended breaking those ... Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
20 lines
444 B
C
20 lines
444 B
C
/*
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* Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
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* Rewritten for Linux 2.6 by Christoph Hellwig (hch@lst.de) Jan 2004
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*/
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#ifndef _ASM_MMZONE_H_
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#define _ASM_MMZONE_H_
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#include <linux/config.h>
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#include <asm/page.h>
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#include <mmzone.h>
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#ifdef CONFIG_DISCONTIGMEM
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#define kvaddr_to_nid(kvaddr) pa_to_nid(__pa(kvaddr))
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#define pfn_to_nid(pfn) pa_to_nid((pfn) << PAGE_SHIFT)
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#endif /* CONFIG_DISCONTIGMEM */
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#endif /* _ASM_MMZONE_H_ */
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