mm/memory_hotplug: allow arch_remove_memory() without CONFIG_MEMORY_HOTREMOVE

[mirror_ubuntu-hirsute-kernel.git] / include / linux / memory_hotplug.h

diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index ae892eef8b825fb95a94b8ff37a7aa31c203d006..87bf9c4a889e7d5a3e9adaf38531f8a48ad0efa1 100644 (file)
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -123,12 +123,10 @@ static inline bool movable_node_is_enabled(void)
        return movable_node_enabled;
 }
 
-#ifdef CONFIG_MEMORY_HOTREMOVE
 extern void arch_remove_memory(int nid, u64 start, u64 size,
                               struct vmem_altmap *altmap);
 extern void __remove_pages(struct zone *zone, unsigned long start_pfn,
                           unsigned long nr_pages, struct vmem_altmap *altmap);
-#endif /* CONFIG_MEMORY_HOTREMOVE */
 
 /*
  * Do we want sysfs memblock files created. This will allow userspace to online
@@ -324,7 +322,7 @@ static inline void pgdat_resize_init(struct pglist_data *pgdat) {}
 extern bool is_mem_section_removable(unsigned long pfn, unsigned long nr_pages);
 extern void try_offline_node(int nid);
 extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages);
-extern void remove_memory(int nid, u64 start, u64 size);
+extern int remove_memory(int nid, u64 start, u64 size);
 extern void __remove_memory(int nid, u64 start, u64 size);
 
 #else
@@ -341,7 +339,11 @@ static inline int offline_pages(unsigned long start_pfn, unsigned long nr_pages)
        return -EINVAL;
 }
 
-static inline void remove_memory(int nid, u64 start, u64 size) {}
+static inline int remove_memory(int nid, u64 start, u64 size)
+{
+       return -EBUSY;
+}
+
 static inline void __remove_memory(int nid, u64 start, u64 size) {}
 #endif /* CONFIG_MEMORY_HOTREMOVE */