linux-kernel - [PATCH] mm/sparse: Fix sparse_vmemmap_init_nid_early definition without CONFIG

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Message-Id: <20251127092512.278-1-guojinhui.liam@bytedance.com>
Date: Thu, 27 Nov 2025 17:25:12 +0800
From: "Jinhui Guo" <guojinhui.liam@...edance.com>
To: <akpm@...ux-foundation.org>, <david@...nel.org>, 
	<lorenzo.stoakes@...cle.com>, <Liam.Howlett@...cle.com>, 
	<vbabka@...e.cz>, <rppt@...nel.org>, <surenb@...gle.com>, 
	<mhocko@...e.com>, <fvdl@...gle.com>
Cc: <guojinhui.liam@...edance.com>, <linux-mm@...ck.org>, 
	<linux-kernel@...r.kernel.org>
Subject: [PATCH] mm/sparse: Fix sparse_vmemmap_init_nid_early definition without CONFIG_SPARSEMEM

When CONFIG_SPARSEMEM is disabled, the macro
sparse_vmemmap_init_nid_early(_nid, _use) passes
two arguments, while the actual function accepts
only nid. Drop the extra argument _use.

Fixes: d65917c42373 ("mm/sparse: allow for alternate vmemmap section init at boot")
Signed-off-by: Jinhui Guo <guojinhui.liam@...edance.com>
---
 include/linux/mmzone.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 7fb7331c5725..f6dd181a4821 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -2293,7 +2293,7 @@ void sparse_init(void);
 #else
 #define sparse_init()	do {} while (0)
 #define sparse_index_init(_sec, _nid)  do {} while (0)
-#define sparse_vmemmap_init_nid_early(_nid, _use) do {} while (0)
+#define sparse_vmemmap_init_nid_early(_nid) do {} while (0)
 #define sparse_vmemmap_init_nid_late(_nid) do {} while (0)
 #define pfn_in_present_section pfn_valid
 #define subsection_map_init(_pfn, _nr_pages) do {} while (0)
-- 
2.20.1