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[PATCH] numa node ids are int, page_to_nid and zone_to_nid should return int

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NUMA node ids are passed as either int or unsigned int almost exclusivly
page_to_nid and zone_to_nid both return unsigned long.  This is a throw
back to when page_to_nid was a #define and was thus exposing the real type
of the page flags field.

In addition to fixing up the definitions of page_to_nid and zone_to_nid I
audited the users of these functions identifying the following incorrect
uses:

1) mm/page_alloc.c show_node() -- printk dumping the node id,
2) include/asm-ia64/pgalloc.h pgtable_quicklist_free() -- comparison
   against numa_node_id() which returns an int from cpu_to_node(), and
3) mm/mpolicy.c check_pte_range -- used as an index in node_isset which
   uses bit_set which in generic code takes an int.

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Cc: Christoph Lameter <clameter@engr.sgi.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andy Whitcroft 2006-12-06 20:33:03 -08:00 committed by Linus Torvalds
parent bc4ba393c0
commit 25ba77c141
5 changed files with 7 additions and 7 deletions
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2
include/asm-ia64/pgalloc.h
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@ -60,7 +60,7 @@ static inline void *pgtable_quicklist_alloc(void)
static inline void pgtable_quicklist_free(void *pgtable_entry)
{
#ifdef CONFIG_NUMA
unsigned long nid = page_to_nid(virt_to_page(pgtable_entry));
int nid = page_to_nid(virt_to_page(pgtable_entry));
if (unlikely(nid != numa_node_id())) {
free_page((unsigned long)pgtable_entry);

6
include/linux/mm.h
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@ -456,7 +456,7 @@ static inline int page_zone_id(struct page *page)
return (page->flags >> ZONEID_PGSHIFT) & ZONEID_MASK;
}
static inline unsigned long zone_to_nid(struct zone *zone)
static inline int zone_to_nid(struct zone *zone)
{
#ifdef CONFIG_NUMA
return zone->node;
@ -466,9 +466,9 @@ static inline unsigned long zone_to_nid(struct zone *zone)
}
#ifdef NODE_NOT_IN_PAGE_FLAGS
extern unsigned long page_to_nid(struct page *page);
extern int page_to_nid(struct page *page);
#else
static inline unsigned long page_to_nid(struct page *page)
static inline int page_to_nid(struct page *page)
{
return (page->flags >> NODES_PGSHIFT) & NODES_MASK;
}

2
mm/mempolicy.c
View File

@ -221,7 +221,7 @@ static int check_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
orig_pte = pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
do {
struct page *page;
unsigned int nid;
int nid;
if (!pte_present(*pte))
continue;

2
mm/page_alloc.c
View File

@ -1407,7 +1407,7 @@ unsigned int nr_free_pagecache_pages(void)
static inline void show_node(struct zone *zone)
{
if (NUMA_BUILD)
printk("Node %ld ", zone_to_nid(zone));
printk("Node %d ", zone_to_nid(zone));
}
void si_meminfo(struct sysinfo *val)

2
mm/sparse.c
View File

@ -36,7 +36,7 @@ static u8 section_to_node_table[NR_MEM_SECTIONS] __cacheline_aligned;
static u16 section_to_node_table[NR_MEM_SECTIONS] __cacheline_aligned;
#endif
unsigned long page_to_nid(struct page *page)
int page_to_nid(struct page *page)
{
return section_to_node_table[page_to_section(page)];
}