[PATCH] mm: Drop elements 'hw' and 'phys_callback' from struct memory_block

[Anshuman Khandual]

memory_block structure elements 'hw' and 'phys_callback' are not getting
used. This was originally added with commit 3947be1969a9 ("[PATCH] memory
hotplug: sysfs and add/remove functions") but never seem to have been used.
Just drop them now.

Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
---
 include/linux/memory.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/include/linux/memory.h b/include/linux/memory.h
index 0ebb105eb261..4e95a9eb8061 100644
--- a/include/linux/memory.h
+++ b/include/linux/memory.h
@@ -29,8 +29,6 @@ struct memory_block {
 	int section_count;		/* serialized by mem_sysfs_mutex */
 	int online_type;		/* for passing data to online routine */
 	int phys_device;		/* to which fru does this belong? */
-	void *hw;			/* optional pointer to fw/hw data */
-	int (*phys_callback)(struct memory_block *);
 	struct device dev;
 	int nid;			/* NID for this memory block */
 };
-- 
2.20.1