[PATCH 4/10] memory-hotplug : unregister memory section on SPARSEMEM_VMEMMAP

2012-10-04 Thread Yasuaki Ishimatsu 
Currently __remove_section for SPARSEMEM_VMEMMAP does nothing. But even if
we use SPARSEMEM_VMEMMAP, we can unregister the memory_section.

So the patch add unregister_memory_section() into __remove_section().

CC: David Rientjes 
CC: Jiang Liu 
CC: Len Brown 
CC: Christoph Lameter 
Cc: Minchan Kim 
CC: Andrew Morton 
CC: KOSAKI Motohiro  
CC: Wen Congyang 
Signed-off-by: Yasuaki Ishimatsu 
---
 mm/memory_hotplug.c |   13 -
 1 file changed, 8 insertions(+), 5 deletions(-)

Index: linux-3.6/mm/memory_hotplug.c
===
--- linux-3.6.orig/mm/memory_hotplug.c  2012-10-04 18:29:50.577668254 +0900
+++ linux-3.6/mm/memory_hotplug.c   2012-10-04 18:29:58.284676075 +0900
@@ -279,11 +279,14 @@ static int __meminit __add_section(int n
 #ifdef CONFIG_SPARSEMEM_VMEMMAP
 static int __remove_section(struct zone *zone, struct mem_section *ms)
 {
-   /*
-* XXX: Freeing memmap with vmemmap is not implement yet.
-*  This should be removed later.
-*/
-   return -EBUSY;
+   int ret = -EINVAL;
+
+   if (!valid_section(ms))
+   return ret;
+
+   ret = unregister_memory_section(ms);
+
+   return ret;
 }
 #else
 static int __remove_section(struct zone *zone, struct mem_section *ms)

--
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[PATCH 4/10] memory-hotplug : unregister memory section on SPARSEMEM_VMEMMAP

2012-10-04 Thread Yasuaki Ishimatsu 
Currently __remove_section for SPARSEMEM_VMEMMAP does nothing. But even if
we use SPARSEMEM_VMEMMAP, we can unregister the memory_section.

So the patch add unregister_memory_section() into __remove_section().

CC: David Rientjes rient...@google.com
CC: Jiang Liu liu...@gmail.com
CC: Len Brown len.br...@intel.com
CC: Christoph Lameter c...@linux.com
Cc: Minchan Kim minchan@gmail.com
CC: Andrew Morton a...@linux-foundation.org
CC: KOSAKI Motohiro kosaki.motoh...@jp.fujitsu.com 
CC: Wen Congyang we...@cn.fujitsu.com
Signed-off-by: Yasuaki Ishimatsu isimatu.yasu...@jp.fujitsu.com
---
 mm/memory_hotplug.c |   13 -
 1 file changed, 8 insertions(+), 5 deletions(-)

Index: linux-3.6/mm/memory_hotplug.c
===
--- linux-3.6.orig/mm/memory_hotplug.c  2012-10-04 18:29:50.577668254 +0900
+++ linux-3.6/mm/memory_hotplug.c   2012-10-04 18:29:58.284676075 +0900
@@ -279,11 +279,14 @@ static int __meminit __add_section(int n
 #ifdef CONFIG_SPARSEMEM_VMEMMAP
 static int __remove_section(struct zone *zone, struct mem_section *ms)
 {
-   /*
-* XXX: Freeing memmap with vmemmap is not implement yet.
-*  This should be removed later.
-*/
-   return -EBUSY;
+   int ret = -EINVAL;
+
+   if (!valid_section(ms))
+   return ret;
+
+   ret = unregister_memory_section(ms);
+
+   return ret;
 }
 #else
 static int __remove_section(struct zone *zone, struct mem_section *ms)

--
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Please read the FAQ at  http://www.tux.org/lkml/