+ mm-numa-remove-unnecessary-local-variable-in-alloc_node_data.patch added to mm-unstable branch

+ mm-numa-remove-unnecessary-local-variable-in-alloc_node_data.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm/numa: remove unnecessary local variable in alloc_node_data()
has been added to the -mm mm-unstable branch.  Its filename is
     mm-numa-remove-unnecessary-local-variable-in-alloc_node_data.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-numa-remove-unnecessary-local-variable-in-alloc_node_data.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Ye Liu <liuye@kylinos.cn>
Subject: mm/numa: remove unnecessary local variable in alloc_node_data()
Date: Sun, 27 Apr 2025 18:04:42 +0800

The temporary local variable 'nd' is redundant.  Directly assign the
virtual address to node_data[nid] to simplify the code.

No functional change.

Link: https://lkml.kernel.org/r/20250427100442.958352-4-ye.liu@linux.dev
Signed-off-by: Ye Liu <liuye@kylinos.cn>
Cc: David Hildenbrand <david@redhat.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/numa.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/mm/numa.c~mm-numa-remove-unnecessary-local-variable-in-alloc_node_data
+++ a/mm/numa.c
@@ -13,7 +13,6 @@ void __init alloc_node_data(int nid)
 {
 	const size_t nd_size = roundup(sizeof(pg_data_t), SMP_CACHE_BYTES);
 	u64 nd_pa;
-	void *nd;
 	int tnid;
 
 	/* Allocate node data.  Try node-local memory and then any node. */
@@ -21,7 +20,6 @@ void __init alloc_node_data(int nid)
 	if (!nd_pa)
 		panic("Cannot allocate %zu bytes for node %d data\n",
 		      nd_size, nid);
-	nd = __va(nd_pa);
 
 	/* report and initialize */
 	pr_info("NODE_DATA(%d) allocated [mem %#010Lx-%#010Lx]\n", nid,
@@ -30,7 +28,7 @@ void __init alloc_node_data(int nid)
 	if (tnid != nid)
 		pr_info("    NODE_DATA(%d) on node %d\n", nid, tnid);
 
-	node_data[nid] = nd;
+	node_data[nid] = __va(nd_pa);
 	memset(NODE_DATA(nid), 0, sizeof(pg_data_t));
 }
 
_

Patches currently in -mm which might be from liuye@kylinos.cn are

mm-show_mem-optimize-si_meminfo_node-by-reducing-redundant-code.patch
mm-page_alloc-simplify-free_page_is_bad-by-removing-free_page_is_bad_report.patch
fs-proc-page-refactoring-to-reduce-code-duplication.patch
mm-rmap-rename-page__anon_vma-to-anon_vma-for-consistency.patch
mm-rmap-fix-typo-in-comment-in-page_address_in_vma.patch
mm-io-mapping-precompute-remap-protection-flags-for-clarity.patch
mm-debug_page_alloc-improve-error-message-for-invalid-guardpage-minorder.patch
mm-numa-remove-unnecessary-local-variable-in-alloc_node_data.patch