Re: [PATCH v3 11/12] memory-hotplug: remove sysfs file of node
On 2012/11/1 17:44, Wen Congyang wrote:
This patch introduces a new function try_offline_node() to
remove sysfs file of node when all memory sections of this
node are removed. If some memory sections of this node are
not removed, this function does nothing.
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: Yasuaki Ishimatsu isimatu.yasu...@jp.fujitsu.com
Signed-off-by: Wen Congyang we...@cn.fujitsu.com
---
drivers/acpi/acpi_memhotplug.c | 8 +-
include/linux/memory_hotplug.h | 2 +-
mm/memory_hotplug.c| 58
--
3 files changed, 64 insertions(+), 4 deletions(-)
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 24c807f..0780f99 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -310,7 +310,9 @@ static int acpi_memory_disable_device(struct
acpi_memory_device *mem_device)
{
int result;
struct acpi_memory_info *info, *n;
+ int node;
+ node = acpi_get_node(mem_device-device-handle);
/*
* Ask the VM to offline this memory range.
@@ -318,7 +320,11 @@ static int acpi_memory_disable_device(struct
acpi_memory_device *mem_device)
*/
list_for_each_entry_safe(info, n, mem_device-res_list, list) {
if (info-enabled) {
- result = remove_memory(info-start_addr, info-length);
+ if (node 0)
+ node = memory_add_physaddr_to_nid(
+ info-start_addr);
+ result = remove_memory(node, info-start_addr,
+ info-length);
if (result)
return result;
}
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index d4c4402..7b4cfe6 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -231,7 +231,7 @@ extern int arch_add_memory(int nid, u64 start, u64 size);
extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages);
extern int offline_memory_block(struct memory_block *mem);
extern bool is_memblock_offlined(struct memory_block *mem);
-extern int remove_memory(u64 start, u64 size);
+extern int remove_memory(int node, u64 start, u64 size);
extern int sparse_add_one_section(struct zone *zone, unsigned long start_pfn,
int nr_pages);
extern void sparse_remove_one_section(struct zone *zone, struct mem_section
*ms);
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 7bcced0..d965da3 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -29,6 +29,7 @@
#include linux/suspend.h
#include linux/mm_inline.h
#include linux/firmware-map.h
+#include linux/stop_machine.h
#include asm/tlbflush.h
@@ -1299,7 +1300,58 @@ static int is_memblock_offlined_cb(struct memory_block
*mem, void *arg)
return ret;
}
-int __ref remove_memory(u64 start, u64 size)
+static int check_cpu_on_node(void *data)
+{
+ struct pglist_data *pgdat = data;
+ int cpu;
+
+ for_each_present_cpu(cpu) {
+ if (cpu_to_node(cpu) == pgdat-node_id)
+ /*
+ * the cpu on this node isn't removed, and we can't
+ * offline this node.
+ */
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+/* offline the node if all memory sections of this node are removed */
+static void try_offline_node(int nid)
+{
+ unsigned long start_pfn = NODE_DATA(nid)-node_start_pfn;
+ unsigned long end_pfn = start_pfn + NODE_DATA(nid)-node_spanned_pages;
+ unsigned long pfn;
+
+ for (pfn = start_pfn; pfn end_pfn; pfn += PAGES_PER_SECTION) {
+ unsigned long section_nr = pfn_to_section_nr(pfn);
+
+ if (!present_section_nr(section_nr))
+ continue;
+
+ if (pfn_to_nid(pfn) != nid)
+ continue;
+
+ /*
+ * some memory sections of this node are not removed, and we
+ * can't offline node now.
+ */
+ return;
+ }
+
+ if (stop_machine(check_cpu_on_node, NODE_DATA(nid), NULL))
+ return;
how about:
if (nr_cpus_node(nid))
return;
+
+ /*
+ * all memory/cpu of this node are removed, we can offline this
+ * node now.
+ */
+ node_set_offline(nid);
+ unregister_one_node(nid);
+}
+
+int __ref remove_memory(int nid, u64 start, u64 size)
{
unsigned long start_pfn,
Re: [PATCH v3 11/12] memory-hotplug: remove sysfs file of node
At 11/26/2012 10:27 PM, Jianguo Wu Wrote:
On 2012/11/1 17:44, Wen Congyang wrote:
This patch introduces a new function try_offline_node() to
remove sysfs file of node when all memory sections of this
node are removed. If some memory sections of this node are
not removed, this function does nothing.
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: Yasuaki Ishimatsu isimatu.yasu...@jp.fujitsu.com
Signed-off-by: Wen Congyang we...@cn.fujitsu.com
---
drivers/acpi/acpi_memhotplug.c | 8 +-
include/linux/memory_hotplug.h | 2 +-
mm/memory_hotplug.c| 58
--
3 files changed, 64 insertions(+), 4 deletions(-)
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 24c807f..0780f99 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -310,7 +310,9 @@ static int acpi_memory_disable_device(struct
acpi_memory_device *mem_device)
{
int result;
struct acpi_memory_info *info, *n;
+int node;
+node = acpi_get_node(mem_device-device-handle);
/*
* Ask the VM to offline this memory range.
@@ -318,7 +320,11 @@ static int acpi_memory_disable_device(struct
acpi_memory_device *mem_device)
*/
list_for_each_entry_safe(info, n, mem_device-res_list, list) {
if (info-enabled) {
-result = remove_memory(info-start_addr, info-length);
+if (node 0)
+node = memory_add_physaddr_to_nid(
+info-start_addr);
+result = remove_memory(node, info-start_addr,
+info-length);
if (result)
return result;
}
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index d4c4402..7b4cfe6 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -231,7 +231,7 @@ extern int arch_add_memory(int nid, u64 start, u64 size);
extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages);
extern int offline_memory_block(struct memory_block *mem);
extern bool is_memblock_offlined(struct memory_block *mem);
-extern int remove_memory(u64 start, u64 size);
+extern int remove_memory(int node, u64 start, u64 size);
extern int sparse_add_one_section(struct zone *zone, unsigned long
start_pfn,
int nr_pages);
extern void sparse_remove_one_section(struct zone *zone, struct mem_section
*ms);
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 7bcced0..d965da3 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -29,6 +29,7 @@
#include linux/suspend.h
#include linux/mm_inline.h
#include linux/firmware-map.h
+#include linux/stop_machine.h
#include asm/tlbflush.h
@@ -1299,7 +1300,58 @@ static int is_memblock_offlined_cb(struct
memory_block *mem, void *arg)
return ret;
}
-int __ref remove_memory(u64 start, u64 size)
+static int check_cpu_on_node(void *data)
+{
+struct pglist_data *pgdat = data;
+int cpu;
+
+for_each_present_cpu(cpu) {
+if (cpu_to_node(cpu) == pgdat-node_id)
+/*
+ * the cpu on this node isn't removed, and we can't
+ * offline this node.
+ */
+return -EBUSY;
+}
+
+return 0;
+}
+
+/* offline the node if all memory sections of this node are removed */
+static void try_offline_node(int nid)
+{
+unsigned long start_pfn = NODE_DATA(nid)-node_start_pfn;
+unsigned long end_pfn = start_pfn + NODE_DATA(nid)-node_spanned_pages;
+unsigned long pfn;
+
+for (pfn = start_pfn; pfn end_pfn; pfn += PAGES_PER_SECTION) {
+unsigned long section_nr = pfn_to_section_nr(pfn);
+
+if (!present_section_nr(section_nr))
+continue;
+
+if (pfn_to_nid(pfn) != nid)
+continue;
+
+/*
+ * some memory sections of this node are not removed, and we
+ * can't offline node now.
+ */
+return;
+}
+
+if (stop_machine(check_cpu_on_node, NODE_DATA(nid), NULL))
+return;
how about:
if (nr_cpus_node(nid))
If all cpus on the node is offlined, but not removed, nr_cpus_node(nid) will
return 0. In this case, we still can't offline the node.
Another purpose to use stop_machine() is to prevent cpu hotplug. We can't lock
cpuhotplug here.
Thanks
Wen Congyang
return;
+
+/*
+ * all memory/cpu
Re: [PATCH v3 11/12] memory-hotplug: remove sysfs file of node
At 11/19/2012 06:08 PM, Yasuaki Ishimatsu Wrote:
Hi Wen,
This patch cannot be applied, if I apply latest acpi framework's patch-set:
https://lkml.org/lkml/2012/11/15/21
Because acpi_memory_disable_device() is gone by the patch-set.
The patchset is not for pm tree, so I don't apply the patchset in pm tree
before generating this patchset.
Thanks
Wen Congyang
I updated the patch and attached it on the mail.
2012/11/01 18:44, Wen Congyang wrote:
This patch introduces a new function try_offline_node() to
remove sysfs file of node when all memory sections of this
node are removed. If some memory sections of this node are
not removed, this function does nothing.
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: Yasuaki Ishimatsu isimatu.yasu...@jp.fujitsu.com
Signed-off-by: Wen Congyang we...@cn.fujitsu.com
---
drivers/acpi/acpi_memhotplug.c | 8 +-
include/linux/memory_hotplug.h | 2 +-
mm/memory_hotplug.c| 58
--
3 files changed, 64 insertions(+), 4 deletions(-)
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 24c807f..0780f99 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -310,7 +310,9 @@ static int acpi_memory_disable_device(struct
acpi_memory_device *mem_device)
{
int result;
struct acpi_memory_info *info, *n;
+int node;
+node = acpi_get_node(mem_device-device-handle);
/*
* Ask the VM to offline this memory range.
@@ -318,7 +320,11 @@ static int acpi_memory_disable_device(struct
acpi_memory_device *mem_device)
*/
list_for_each_entry_safe(info, n, mem_device-res_list, list) {
if (info-enabled) {
-result = remove_memory(info-start_addr, info-length);
+if (node 0)
+node = memory_add_physaddr_to_nid(
+info-start_addr);
+result = remove_memory(node, info-start_addr,
+info-length);
if (result)
return result;
}
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index d4c4402..7b4cfe6 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -231,7 +231,7 @@ extern int arch_add_memory(int nid, u64 start, u64 size);
extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages);
extern int offline_memory_block(struct memory_block *mem);
extern bool is_memblock_offlined(struct memory_block *mem);
-extern int remove_memory(u64 start, u64 size);
+extern int remove_memory(int node, u64 start, u64 size);
extern int sparse_add_one_section(struct zone *zone, unsigned long
start_pfn,
int nr_pages);
extern void sparse_remove_one_section(struct zone *zone, struct
mem_section *ms);
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 7bcced0..d965da3 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -29,6 +29,7 @@
#include linux/suspend.h
#include linux/mm_inline.h
#include linux/firmware-map.h
+#include linux/stop_machine.h
#include asm/tlbflush.h
@@ -1299,7 +1300,58 @@ static int is_memblock_offlined_cb(struct
memory_block *mem, void *arg)
return ret;
}
-int __ref remove_memory(u64 start, u64 size)
+static int check_cpu_on_node(void *data)
+{
+struct pglist_data *pgdat = data;
+int cpu;
+
+for_each_present_cpu(cpu) {
+if (cpu_to_node(cpu) == pgdat-node_id)
+/*
+ * the cpu on this node isn't removed, and we can't
+ * offline this node.
+ */
+return -EBUSY;
+}
+
+return 0;
+}
+
+/* offline the node if all memory sections of this node are removed */
+static void try_offline_node(int nid)
+{
+unsigned long start_pfn = NODE_DATA(nid)-node_start_pfn;
+unsigned long end_pfn = start_pfn + NODE_DATA(nid)-node_spanned_pages;
+unsigned long pfn;
+
+for (pfn = start_pfn; pfn end_pfn; pfn += PAGES_PER_SECTION) {
+unsigned long section_nr = pfn_to_section_nr(pfn);
+
+if (!present_section_nr(section_nr))
+continue;
+
+if (pfn_to_nid(pfn) != nid)
+continue;
+
+/*
+ * some memory sections of this node are not removed, and we
+ * can't offline node now.
+ */
+return;
+}
+
+if (stop_machine(check_cpu_on_node,
Re: [PATCH v3 11/12] memory-hotplug: remove sysfs file of node
Hi Wen,
This patch cannot be applied, if I apply latest acpi framework's patch-set:
https://lkml.org/lkml/2012/11/15/21
Because acpi_memory_disable_device() is gone by the patch-set.
I updated the patch and attached it on the mail.
2012/11/01 18:44, Wen Congyang wrote:
This patch introduces a new function try_offline_node() to
remove sysfs file of node when all memory sections of this
node are removed. If some memory sections of this node are
not removed, this function does nothing.
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: Yasuaki Ishimatsu isimatu.yasu...@jp.fujitsu.com
Signed-off-by: Wen Congyang we...@cn.fujitsu.com
---
drivers/acpi/acpi_memhotplug.c | 8 +-
include/linux/memory_hotplug.h | 2 +-
mm/memory_hotplug.c| 58
--
3 files changed, 64 insertions(+), 4 deletions(-)
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 24c807f..0780f99 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -310,7 +310,9 @@ static int acpi_memory_disable_device(struct
acpi_memory_device *mem_device)
{
int result;
struct acpi_memory_info *info, *n;
+ int node;
+ node = acpi_get_node(mem_device-device-handle);
/*
* Ask the VM to offline this memory range.
@@ -318,7 +320,11 @@ static int acpi_memory_disable_device(struct
acpi_memory_device *mem_device)
*/
list_for_each_entry_safe(info, n, mem_device-res_list, list) {
if (info-enabled) {
- result = remove_memory(info-start_addr, info-length);
+ if (node 0)
+ node = memory_add_physaddr_to_nid(
+ info-start_addr);
+ result = remove_memory(node, info-start_addr,
+ info-length);
if (result)
return result;
}
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index d4c4402..7b4cfe6 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -231,7 +231,7 @@ extern int arch_add_memory(int nid, u64 start, u64 size);
extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages);
extern int offline_memory_block(struct memory_block *mem);
extern bool is_memblock_offlined(struct memory_block *mem);
-extern int remove_memory(u64 start, u64 size);
+extern int remove_memory(int node, u64 start, u64 size);
extern int sparse_add_one_section(struct zone *zone, unsigned long
start_pfn,
int nr_pages);
extern void sparse_remove_one_section(struct zone *zone, struct mem_section
*ms);
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 7bcced0..d965da3 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -29,6 +29,7 @@
#include linux/suspend.h
#include linux/mm_inline.h
#include linux/firmware-map.h
+#include linux/stop_machine.h
#include asm/tlbflush.h
@@ -1299,7 +1300,58 @@ static int is_memblock_offlined_cb(struct memory_block
*mem, void *arg)
return ret;
}
-int __ref remove_memory(u64 start, u64 size)
+static int check_cpu_on_node(void *data)
+{
+ struct pglist_data *pgdat = data;
+ int cpu;
+
+ for_each_present_cpu(cpu) {
+ if (cpu_to_node(cpu) == pgdat-node_id)
+ /*
+ * the cpu on this node isn't removed, and we can't
+ * offline this node.
+ */
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+/* offline the node if all memory sections of this node are removed */
+static void try_offline_node(int nid)
+{
+ unsigned long start_pfn = NODE_DATA(nid)-node_start_pfn;
+ unsigned long end_pfn = start_pfn + NODE_DATA(nid)-node_spanned_pages;
+ unsigned long pfn;
+
+ for (pfn = start_pfn; pfn end_pfn; pfn += PAGES_PER_SECTION) {
+ unsigned long section_nr = pfn_to_section_nr(pfn);
+
+ if (!present_section_nr(section_nr))
+ continue;
+
+ if (pfn_to_nid(pfn) != nid)
+ continue;
+
+ /*
+ * some memory sections of this node are not removed, and we
+ * can't offline node now.
+ */
+ return;
+ }
+
+ if (stop_machine(check_cpu_on_node, NODE_DATA(nid), NULL))
+ return;
+
+ /*
+ * all memory/cpu of this node are removed, we can offline this
+ *
[PATCH v3 11/12] memory-hotplug: remove sysfs file of node
This patch introduces a new function try_offline_node() to
remove sysfs file of node when all memory sections of this
node are removed. If some memory sections of this node are
not removed, this function does nothing.
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: Yasuaki Ishimatsu isimatu.yasu...@jp.fujitsu.com
Signed-off-by: Wen Congyang we...@cn.fujitsu.com
---
drivers/acpi/acpi_memhotplug.c | 8 +-
include/linux/memory_hotplug.h | 2 +-
mm/memory_hotplug.c| 58 --
3 files changed, 64 insertions(+), 4 deletions(-)
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 24c807f..0780f99 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -310,7 +310,9 @@ static int acpi_memory_disable_device(struct
acpi_memory_device *mem_device)
{
int result;
struct acpi_memory_info *info, *n;
+ int node;
+ node = acpi_get_node(mem_device-device-handle);
/*
* Ask the VM to offline this memory range.
@@ -318,7 +320,11 @@ static int acpi_memory_disable_device(struct
acpi_memory_device *mem_device)
*/
list_for_each_entry_safe(info, n, mem_device-res_list, list) {
if (info-enabled) {
- result = remove_memory(info-start_addr, info-length);
+ if (node 0)
+ node = memory_add_physaddr_to_nid(
+ info-start_addr);
+ result = remove_memory(node, info-start_addr,
+ info-length);
if (result)
return result;
}
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index d4c4402..7b4cfe6 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -231,7 +231,7 @@ extern int arch_add_memory(int nid, u64 start, u64 size);
extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages);
extern int offline_memory_block(struct memory_block *mem);
extern bool is_memblock_offlined(struct memory_block *mem);
-extern int remove_memory(u64 start, u64 size);
+extern int remove_memory(int node, u64 start, u64 size);
extern int sparse_add_one_section(struct zone *zone, unsigned long start_pfn,
int nr_pages);
extern void sparse_remove_one_section(struct zone *zone, struct mem_section
*ms);
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 7bcced0..d965da3 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -29,6 +29,7 @@
#include linux/suspend.h
#include linux/mm_inline.h
#include linux/firmware-map.h
+#include linux/stop_machine.h
#include asm/tlbflush.h
@@ -1299,7 +1300,58 @@ static int is_memblock_offlined_cb(struct memory_block
*mem, void *arg)
return ret;
}
-int __ref remove_memory(u64 start, u64 size)
+static int check_cpu_on_node(void *data)
+{
+ struct pglist_data *pgdat = data;
+ int cpu;
+
+ for_each_present_cpu(cpu) {
+ if (cpu_to_node(cpu) == pgdat-node_id)
+ /*
+* the cpu on this node isn't removed, and we can't
+* offline this node.
+*/
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+/* offline the node if all memory sections of this node are removed */
+static void try_offline_node(int nid)
+{
+ unsigned long start_pfn = NODE_DATA(nid)-node_start_pfn;
+ unsigned long end_pfn = start_pfn + NODE_DATA(nid)-node_spanned_pages;
+ unsigned long pfn;
+
+ for (pfn = start_pfn; pfn end_pfn; pfn += PAGES_PER_SECTION) {
+ unsigned long section_nr = pfn_to_section_nr(pfn);
+
+ if (!present_section_nr(section_nr))
+ continue;
+
+ if (pfn_to_nid(pfn) != nid)
+ continue;
+
+ /*
+* some memory sections of this node are not removed, and we
+* can't offline node now.
+*/
+ return;
+ }
+
+ if (stop_machine(check_cpu_on_node, NODE_DATA(nid), NULL))
+ return;
+
+ /*
+* all memory/cpu of this node are removed, we can offline this
+* node now.
+*/
+ node_set_offline(nid);
+ unregister_one_node(nid);
+}
+
+int __ref remove_memory(int nid, u64 start, u64 size)
{
unsigned long start_pfn, end_pfn;
int ret = 0;
@@ -1346,6 +1398,8 @@ repeat:
arch_remove_memory(start, size);
+ try_offline_node(nid);
+
