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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2009-02-18 17:48:33 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2009-02-18 18:37:55 -0500
commitcc2559bccc72767cb446f79b071d96c30c26439b (patch)
treeaacdeee5368e0eef72ed1d7a7cbd7e6ee4837941 /include/linux/mmzone.h
parentf2dbcfa738368c8a40d4a5f0b65dc9879577cb21 (diff)
mm: fix memmap init for handling memory hole
Now, early_pfn_in_nid(PFN, NID) may returns false if PFN is a hole. and memmap initialization was not done. This was a trouble for sparc boot. To fix this, the PFN should be initialized and marked as PG_reserved. This patch changes early_pfn_in_nid() return true if PFN is a hole. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reported-by: David Miller <davem@davemlloft.net> Tested-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x, 2.6.27.x, 2.6.28.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/mmzone.h')
-rw-r--r--include/linux/mmzone.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 09c14e213b63..1aca6cebbb78 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -1071,7 +1071,7 @@ void sparse_init(void);
1071#endif /* CONFIG_SPARSEMEM */ 1071#endif /* CONFIG_SPARSEMEM */
1072 1072
1073#ifdef CONFIG_NODES_SPAN_OTHER_NODES 1073#ifdef CONFIG_NODES_SPAN_OTHER_NODES
1074#define early_pfn_in_nid(pfn, nid) (early_pfn_to_nid(pfn) == (nid)) 1074bool early_pfn_in_nid(unsigned long pfn, int nid);
1075#else 1075#else
1076#define early_pfn_in_nid(pfn, nid) (1) 1076#define early_pfn_in_nid(pfn, nid) (1)
1077#endif 1077#endif