[patch -mm] memory-hotplug: export the function try_offline_node()fix

From: David Rientjes
Date: Thu Jan 24 2013 - 18:05:14 EST


"memory-hotplug: export the function try_offline_node()" declares
try_offline_node() for CONFIG_MEMORY_HOTPLUG, but this function is only
defined for CONFIG_MEMORY_HOTREMOVE:

ERROR: "try_offline_node" [drivers/acpi/processor.ko] undefined!

Fix the build by definining it appropriately.

Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
---
extensively trimmed the cc list of the email to only the maintainers
from scripts/get_maintainer.pl.

include/linux/memory_hotplug.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -193,7 +193,6 @@ extern void get_page_bootmem(unsigned long ingo, struct page *page,

void lock_memory_hotplug(void);
void unlock_memory_hotplug(void);
-extern void try_offline_node(int nid);

#else /* ! CONFIG_MEMORY_HOTPLUG */
/*
@@ -228,13 +227,13 @@ static inline void register_page_bootmem_info_node(struct pglist_data *pgdat)

static inline void lock_memory_hotplug(void) {}
static inline void unlock_memory_hotplug(void) {}
-static inline void try_offline_node(int nid) {}

#endif /* ! CONFIG_MEMORY_HOTPLUG */

#ifdef CONFIG_MEMORY_HOTREMOVE

extern int is_mem_section_removable(unsigned long pfn, unsigned long nr_pages);
+extern void try_offline_node(int nid);

#else
static inline int is_mem_section_removable(unsigned long pfn,
@@ -242,6 +241,8 @@ static inline int is_mem_section_removable(unsigned long pfn,
{
return 0;
}
+
+static inline void try_offline_node(int nid) {}
#endif /* CONFIG_MEMORY_HOTREMOVE */

extern int mem_online_node(int nid);
--
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