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| author | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2008-01-08 15:33:11 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-01-08 16:10:36 -0800 |
| commit | 467bc461d2845f6a04b124bca1ae6ecc554e1ee5 (patch) | |
| tree | 060bed1cbd2440486d2abaafd8f0f2b8e6b9f76b /mm | |
| parent | 22a860a9e22fa077300e1e72170afb82bf695617 (diff) | |
| download | lwn-467bc461d2845f6a04b124bca1ae6ecc554e1ee5.tar.gz lwn-467bc461d2845f6a04b124bca1ae6ecc554e1ee5.zip | |
Fix crash with FLAT_MEMORY and ARCH_PFN_OFFSET != 0
When using FLAT_MEMORY and ARCH_PFN_OFFSET is not 0, the kernel crashes in
memmap_init_zone(). This bug got introduced by commit
c713216deebd95d2b0ab38fef8bb2361c0180c2d
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Cc: Bob Picco <bob.picco@hp.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Andi Kleen <ak@muc.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "Keith Mannthey" <kmannth@gmail.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/page_alloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index d73bfad1c32f..e1028fae3ebb 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3438,7 +3438,7 @@ static void __init_refok alloc_node_mem_map(struct pglist_data *pgdat) mem_map = NODE_DATA(0)->node_mem_map; #ifdef CONFIG_ARCH_POPULATES_NODE_MAP if (page_to_pfn(mem_map) != pgdat->node_start_pfn) - mem_map -= pgdat->node_start_pfn; + mem_map -= (pgdat->node_start_pfn - ARCH_PFN_OFFSET); #endif /* CONFIG_ARCH_POPULATES_NODE_MAP */ } #endif |