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authorAndy Whitcroft <apw@shadowen.org>2006-12-06 20:33:03 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-07 08:39:23 -0800
commit25ba77c141dbcd2602dd0171824d0d72aa023a01 (patch)
tree153eb9bc567f63d739dcaf8a3caf11c8f48b8379 /mm/sparse.c
parentbc4ba393c007248f76c05945abb7b7b892cdd1cc (diff)
downloadlwn-25ba77c141dbcd2602dd0171824d0d72aa023a01.tar.gz
lwn-25ba77c141dbcd2602dd0171824d0d72aa023a01.zip
[PATCH] numa node ids are int, page_to_nid and zone_to_nid should return int
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>
Diffstat (limited to 'mm/sparse.c')
-rw-r--r--mm/sparse.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/sparse.c b/mm/sparse.c
index 158d6a2a5263..ac26eb0d73cd 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -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)];
}