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authorKen'ichi Ohmichi <oomichi@mxs.nes.nec.co.jp>2008-10-29 14:17:57 -0700
committerTony Luck <tony.luck@intel.com>2008-11-04 11:31:12 -0800
commitaca14f33104bb7b101df23cdd36c520b7c66bcfd (patch)
tree1c17323cf1fdf334103696449b2a22a90c937ed2 /arch/ia64/mm/discontig.c
parentd6e15199d1784df90b7535e625f7617bd343d202 (diff)
downloadlinux-2.6.38-lt-ux500-aca14f33104bb7b101df23cdd36c520b7c66bcfd.tar.gz
[IA64] fix the difference between node_mem_map and node_start_pfn
makedumpfile[1] cannot run on ia64 discontigmem kernel, because the member node_mem_map of struct pgdat_list has invalid value. This patch fixes it. node_start_pfn shows the start pfn of each node, and node_mem_map should point 'struct page' of each node's node_start_pfn. On my machine, node0's node_start_pfn shows 0x400 and its node_mem_map points 0xa0007fffbf000000. This address is the same as vmem_map, so the node_mem_map points 'struct page' of pfn 0, even if its node_start_pfn shows 0x400. The cause is due to the round down of min_pfn in count_node_pages() and node0's node_mem_map points 'struct page' of inactive pfn (0x0). This patch fixes it. makedumpfile[1]: dump filtering command https://sourceforge.net/projects/makedumpfile/ Signed-off-by: Ken'ichi Ohmichi <oomichi@mxs.nes.nec.co.jp> Cc: Bernhard Walle <bwalle@suse.de> Cc: Jay Lan <jlan@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/mm/discontig.c')
-rw-r--r--arch/ia64/mm/discontig.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index d8c5fcd89e5..d85ba98d900 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -635,7 +635,6 @@ static __init int count_node_pages(unsigned long start, unsigned long len, int n
(min(end, __pa(MAX_DMA_ADDRESS)) - start) >>PAGE_SHIFT;
#endif
start = GRANULEROUNDDOWN(start);
- start = ORDERROUNDDOWN(start);
end = GRANULEROUNDUP(end);
mem_data[node].max_pfn = max(mem_data[node].max_pfn,
end >> PAGE_SHIFT);