[PATCH v2 5/8] mm/memory_hotplug: Drop MHP_MEMBLOCK_API

[David Hildenbrand]

No longer needed, the callers of arch_add_memory() can handle this
manually.

Cc: Andrew Morton <akpm at linux-foundation.org>
Cc: David Hildenbrand <david at redhat.com>
Cc: Michal Hocko <mhocko at suse.com>
Cc: Oscar Salvador <osalvador at suse.com>
Cc: Pavel Tatashin <pasha.tatashin at soleen.com>
Cc: Wei Yang <richard.weiyang at gmail.com>
Cc: Joonsoo Kim <iamjoonsoo.kim at lge.com>
Cc: Qian Cai <cai at lca.pw>
Cc: Arun KS <arunks at codeaurora.org>
Cc: Mathieu Malaterre <malat at debian.org>
Signed-off-by: David Hildenbrand <david at redhat.com>
---
 include/linux/memory_hotplug.h | 8 --------
 mm/memory_hotplug.c            | 9 +++------
 2 files changed, 3 insertions(+), 14 deletions(-)

diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 2d4de313926d..2f1f87e13baa 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -128,14 +128,6 @@ extern void arch_remove_memory(int nid, u64 start, u64 size,
 extern void __remove_pages(struct zone *zone, unsigned long start_pfn,
 			   unsigned long nr_pages, struct vmem_altmap *altmap);
 
-/*
- * Do we want sysfs memblock files created. This will allow userspace to online
- * and offline memory explicitly. Lack of this bit means that the caller has to
- * call move_pfn_range_to_zone to finish the initialization.
- */
-
-#define MHP_MEMBLOCK_API               (1<<0)
-
 /* reasonably generic interface to expand the physical pages */
 extern int __add_pages(int nid, unsigned long start_pfn, unsigned long nr_pages,
 		       struct mhp_restrictions *restrictions);
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index e1637c8a0723..107f72952347 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -250,7 +250,7 @@ void __init register_page_bootmem_info_node(struct pglist_data *pgdat)
 #endif /* CONFIG_HAVE_BOOTMEM_INFO_NODE */
 
 static int __meminit __add_section(int nid, unsigned long phys_start_pfn,
-		struct vmem_altmap *altmap, bool want_memblock)
+				   struct vmem_altmap *altmap)
 {
 	int ret;
 
@@ -293,8 +293,7 @@ int __ref __add_pages(int nid, unsigned long phys_start_pfn,
 	}
 
 	for (i = start_sec; i <= end_sec; i++) {
-		err = __add_section(nid, section_nr_to_pfn(i), altmap,
-				restrictions->flags & MHP_MEMBLOCK_API);
+		err = __add_section(nid, section_nr_to_pfn(i), altmap);
 
 		/*
 		 * EEXIST is finally dealt with by ioresource collision
@@ -1066,9 +1065,7 @@ static int online_memory_block(struct memory_block *mem, void *arg)
  */
 int __ref add_memory_resource(int nid, struct resource *res)
 {
-	struct mhp_restrictions restrictions = {
-		.flags = MHP_MEMBLOCK_API,
-	};
+	struct mhp_restrictions restrictions = {};
 	u64 start, size;
 	bool new_node = false;
 	int ret;
-- 
2.20.1