Commit 6220ec78 authored Oct 19, 2006 by Andrew Morton Committed by Linus Torvalds Oct 20, 2006

[PATCH] highest_possible_node_id() linkage fix



Qooting Adrian:

- net/sunrpc/svc.c uses highest_possible_node_id()

- include/linux/nodemask.h says highest_possible_node_id() is
  out-of-line #if MAX_NUMNODES > 1

- the out-of-line highest_possible_node_id() is in lib/cpumask.c

- lib/Makefile: lib-$(CONFIG_SMP) += cpumask.o
  CONFIG_ARCH_DISCONTIGMEM_ENABLE=y, CONFIG_SMP=n, CONFIG_SUNRPC=y

-> highest_possible_node_id() is used in net/sunrpc/svc.c
   CONFIG_NODES_SHIFT defined and > 0

-> include/linux/numa.h: MAX_NUMNODES > 1

-> compile error

The bug is not present on architectures where ARCH_DISCONTIGMEM_ENABLE
depends on NUMA (but m32r isn't the only affected architecture).

So move the function into page_alloc.c

Cc: Adrian Bunk <bunk@stusta.de>
Cc: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent e51959fa

lib/cpumask.c

+0 −16

Original line number	Diff line number	Diff line
		@@ -43,19 +43,3 @@ int __any_online_cpu(const cpumask_t *mask)
		return cpu;
		}
		EXPORT_SYMBOL(__any_online_cpu);

		#if MAX_NUMNODES > 1
		/*
		* Find the highest possible node id.
		*/
		int highest_possible_node_id(void)
		{
		unsigned int node;
		unsigned int highest = 0;

		for_each_node_mask(node, node_possible_map)
		highest = node;
		return highest;
		}
		EXPORT_SYMBOL(highest_possible_node_id);
		#endif

mm/page_alloc.c

+16 −0

Original line number	Diff line number	Diff line
		@@ -3120,3 +3120,19 @@ unsigned long page_to_pfn(struct page *page)
		EXPORT_SYMBOL(pfn_to_page);
		EXPORT_SYMBOL(page_to_pfn);
		#endif /* CONFIG_OUT_OF_LINE_PFN_TO_PAGE */

		#if MAX_NUMNODES > 1
		/*
		* Find the highest possible node id.
		*/
		int highest_possible_node_id(void)
		{
		unsigned int node;
		unsigned int highest = 0;

		for_each_node_mask(node, node_possible_map)
		highest = node;
		return highest;
		}
		EXPORT_SYMBOL(highest_possible_node_id);
		#endif