Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=85770ffe4f0cdd4396b17f14762adc25a571a348
Commit: 85770ffe4f0cdd4396b17f14762adc25a571a348
Parent: df068464169a84a6a66c05d140f43a46d5eb6176
Author: Andy Whitcroft <[EMAIL PROTECTED]>
AuthorDate: Wed Aug 22 14:01:03 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Wed Aug 22 19:52:44 2007 -0700
sparsemem: ensure we initialise the node mapping for SPARSEMEM_STATIC
Booting SPARSEMEM on NUMA systems trips a BUG in page_alloc.c:
Initializing HighMem for node 0 (00038000:00100000)
Initializing HighMem for node 1 (00100000:001ffe00)
------------[ cut here ]------------
kernel BUG at /home/apw/git/linux-2.6/mm/page_alloc.c:456!
[...]
This occurs because the section to node id mapping is not being
setup correctly during init under SPARSEMEM_STATIC, leading to an
attempt to free pages from all nodes into the zones on node 0.
When the zone_table[] was removed in the following commit, a new
section to node mapping table was introduced:
commit 89689ae7f95995723fbcd5c116c47933a3bb8b13
[PATCH] Get rid of zone_table[]
That conversion inadvertantly only initialised the node mapping in
SPARSEMEM_EXTREME. Ensure we initialise the node mapping in
SPARSEMEM_STATIC.
[EMAIL PROTECTED]: make the stubs static inline]
Signed-off-by: Andy Whitcroft <[EMAIL PROTECTED]>
Cc: Christoph Lameter <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
mm/sparse.c | 14 ++++++++++----
1 files changed, 10 insertions(+), 4 deletions(-)
diff --git a/mm/sparse.c b/mm/sparse.c
index 3047bf0..239f5a7 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -41,6 +41,15 @@ int page_to_nid(struct page *page)
return section_to_node_table[page_to_section(page)];
}
EXPORT_SYMBOL(page_to_nid);
+
+static void set_section_nid(unsigned long section_nr, int nid)
+{
+ section_to_node_table[section_nr] = nid;
+}
+#else /* !NODE_NOT_IN_PAGE_FLAGS */
+static inline void set_section_nid(unsigned long section_nr, int nid)
+{
+}
#endif
#ifdef CONFIG_SPARSEMEM_EXTREME
@@ -68,10 +77,6 @@ static int __meminit sparse_index_init(unsigned long
section_nr, int nid)
struct mem_section *section;
int ret = 0;
-#ifdef NODE_NOT_IN_PAGE_FLAGS
- section_to_node_table[section_nr] = nid;
-#endif
-
if (mem_section[root])
return -EEXIST;
@@ -148,6 +153,7 @@ void __init memory_present(int nid, unsigned long start,
unsigned long end)
struct mem_section *ms;
sparse_index_init(section, nid);
+ set_section_nid(section, nid);
ms = __nr_to_section(section);
if (!ms->section_mem_map)
-
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