mm/page_alloc: make boot_nodestats static

It's only used in mm/page_alloc.c now.  Make it static.

Link: https://lkml.kernel.org/r/20220916072257.9639-12-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/internal.h b/mm/internal.h
index f46cd8a6694a849bf57005acd09117a0a4f75785..6b7ef495b56d3d9ef383f5b63db2c1a28ed44c20 100644 (file)
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -836,8 +836,6 @@ int migrate_device_coherent_page(struct page *page);
  */
 struct folio *try_grab_folio(struct page *page, int refs, unsigned int flags);
 
-DECLARE_PER_CPU(struct per_cpu_nodestat, boot_nodestats);
-
 extern bool mirrored_kernelcore;
 
 static inline bool vma_soft_dirty_enabled(struct vm_area_struct *vma)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index ec865cfd0c3a75d553ee91052f0eb94c7c8efcee..0f856b4ce3b0d32c0cf9bdb2123c9e6c6ca3d0dc 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6579,7 +6579,7 @@ static void per_cpu_pages_init(struct per_cpu_pages *pcp, struct per_cpu_zonesta
 #define BOOT_PAGESET_BATCH     1
 static DEFINE_PER_CPU(struct per_cpu_pages, boot_pageset);
 static DEFINE_PER_CPU(struct per_cpu_zonestat, boot_zonestats);
-DEFINE_PER_CPU(struct per_cpu_nodestat, boot_nodestats);
+static DEFINE_PER_CPU(struct per_cpu_nodestat, boot_nodestats);
 
 static void __build_all_zonelists(void *data)
 {