diff options
| author | Ingo Molnar <mingo@kernel.org> | 2012-09-25 09:24:59 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-09-25 09:26:55 +0200 |
| commit | 9b20aa63b8fc9a6a3b6831f4eae3621755e51211 (patch) | |
| tree | 0c379f3f3d84411246b49e1c8557480bb0f1d0b0 /mm/memory_hotplug.c | |
| parent | 7ece55a4a3a04abe37118b1d4fb0b702eeb1de4c (diff) | |
| parent | 979570e02981d4a8fc20b3cc8fd651856c98ee9d (diff) | |
Merge tag 'v3.6-rc7' into core/rcu
Merge Linux 3.6-rc7, to pick up fixes and to resolve a conflict in an
upcoming pull.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'mm/memory_hotplug.c')
| -rw-r--r-- | mm/memory_hotplug.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 3ad25f9d1fc1..6a5b90d0cfd7 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -126,9 +126,6 @@ static void register_page_bootmem_info_section(unsigned long start_pfn) struct mem_section *ms; struct page *page, *memmap; - if (!pfn_valid(start_pfn)) - return; - section_nr = pfn_to_section_nr(start_pfn); ms = __nr_to_section(section_nr); @@ -187,9 +184,16 @@ void register_page_bootmem_info_node(struct pglist_data *pgdat) end_pfn = pfn + pgdat->node_spanned_pages; /* register_section info */ - for (; pfn < end_pfn; pfn += PAGES_PER_SECTION) - register_page_bootmem_info_section(pfn); - + for (; pfn < end_pfn; pfn += PAGES_PER_SECTION) { + /* + * Some platforms can assign the same pfn to multiple nodes - on + * node0 as well as nodeN. To avoid registering a pfn against + * multiple nodes we check that this pfn does not already + * reside in some other node. + */ + if (pfn_valid(pfn) && (pfn_to_nid(pfn) == node)) + register_page_bootmem_info_section(pfn); + } } #endif /* !CONFIG_SPARSEMEM_VMEMMAP */ |