[merged mm-stable] drivers-base-node-remove-register_memory_blocks_under_node-function-call-from-register_one_node.patch removed from -mm tree

[merged mm-stable] drivers-base-node-remove-register_memory_blocks_under_node-function-call-from-register_one_node.patch removed from -mm tree

[Andrew Morton]

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The quilt patch titled
     Subject: drivers/base/node: remove register_memory_blocks_under_node() function call from register_one_node
has been removed from the -mm tree.  Its filename was
     drivers-base-node-remove-register_memory_blocks_under_node-function-call-from-register_one_node.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Donet Tom <donettom@linux.ibm.com>
Subject: drivers/base/node: remove register_memory_blocks_under_node() function call from register_one_node
Date: Wed, 28 May 2025 12:18:02 -0500

register_one_node() is now only called via cpu_up() →
__try_online_node() during CPU hotplug operations to online a node.

At this stage, the node has not yet had any memory added.  As a result,
there are no memory blocks to walk or register, so calling
register_memory_blocks_under_node() is unnecessary.

Therefore, the call to register_memory_blocks_under_node() has been
removed from register_one_node().

Link: https://lkml.kernel.org/r/ecf07075b1a41015fcf58823997d5c2ed7b8c18f.1748452242.git.donettom@linux.ibm.com
Signed-off-by: Donet Tom <donettom@linux.ibm.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/node.h |   16 +---------------
 1 file changed, 1 insertion(+), 15 deletions(-)

--- a/include/linux/node.h~drivers-base-node-remove-register_memory_blocks_under_node-function-call-from-register_one_node
+++ a/include/linux/node.h
@@ -134,21 +134,7 @@ extern int __register_one_node(int nid);
 /* Registers an online node */
 static inline int register_one_node(int nid)
 {
-	int error = 0;
-
-	if (node_online(nid)) {
-		struct pglist_data *pgdat = NODE_DATA(nid);
-		unsigned long start_pfn = pgdat->node_start_pfn;
-		unsigned long end_pfn = start_pfn + pgdat->node_spanned_pages;
-
-		error = __register_one_node(nid);
-		if (error)
-			return error;
-		register_memory_blocks_under_node(nid, start_pfn, end_pfn,
-						  MEMINIT_EARLY);
-	}
-
-	return error;
+	return __register_one_node(nid);
 }
 
 extern void unregister_one_node(int nid);
_

Patches currently in -mm which might be from donettom@linux.ibm.com are