[PATCH] ia64: pfn_to_nid() implementation
pfn_to_nid is undefined. We haven't had this interface on ia64. The sys_mbind patches need it. Oh, the paddr_to_nid call could fail when DISCONTIG+NUMA is configured because there isn't any ACPI SRAT NUMA information. Signed-off-by: Bob Picco <bob.picco@hp.com> Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -15,6 +15,20 @@
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#include <asm/page.h>
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#include <asm/meminit.h>
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static inline int pfn_to_nid(unsigned long pfn)
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{
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#ifdef CONFIG_NUMA
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extern int paddr_to_nid(unsigned long);
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int nid = paddr_to_nid(pfn << PAGE_SHIFT);
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if (nid < 0)
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return 0;
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else
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return nid;
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#else
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return 0;
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#endif
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}
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#ifdef CONFIG_DISCONTIGMEM
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#ifdef CONFIG_IA64_DIG /* DIG systems are small */
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