+ mm-page_alloc-make-zone_pcp_update-static.patch added to mm-unstable branch

+ mm-page_alloc-make-zone_pcp_update-static.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm/page_alloc: make zone_pcp_update() static
has been added to the -mm mm-unstable branch.  Its filename is
     mm-page_alloc-make-zone_pcp_update-static.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_alloc-make-zone_pcp_update-static.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: Miaohe Lin <linmiaohe@huawei.com>
Subject: mm/page_alloc: make zone_pcp_update() static
Date: Fri, 16 Sep 2022 15:22:43 +0800

Since commit b92ca18e8ca5 ("mm/page_alloc: disassociate the pcp->high from
pcp->batch"), zone_pcp_update() is only used in mm/page_alloc.c.  Move
zone_pcp_update() up to avoid forward declaration and then make it static.
No functional change intended.

Link: https://lkml.kernel.org/r/20220916072257.9639-3-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>
---

 mm/internal.h   |    1 -
 mm/page_alloc.c |   22 +++++++++++-----------
 2 files changed, 11 insertions(+), 12 deletions(-)

--- a/mm/internal.h~mm-page_alloc-make-zone_pcp_update-static
+++ a/mm/internal.h
@@ -367,7 +367,6 @@ extern int user_min_free_kbytes;
 extern void free_unref_page(struct page *page, unsigned int order);
 extern void free_unref_page_list(struct list_head *list);
 
-extern void zone_pcp_update(struct zone *zone, int cpu_online);
 extern void zone_pcp_reset(struct zone *zone);
 extern void zone_pcp_disable(struct zone *zone);
 extern void zone_pcp_enable(struct zone *zone);
--- a/mm/page_alloc.c~mm-page_alloc-make-zone_pcp_update-static
+++ a/mm/page_alloc.c
@@ -7235,6 +7235,17 @@ void __meminit setup_zone_pageset(struct
 }
 
 /*
+ * The zone indicated has a new number of managed_pages; batch sizes and percpu
+ * page high values need to be recalculated.
+ */
+static void zone_pcp_update(struct zone *zone, int cpu_online)
+{
+	mutex_lock(&pcp_batch_high_lock);
+	zone_set_pageset_high_and_batch(zone, cpu_online);
+	mutex_unlock(&pcp_batch_high_lock);
+}
+
+/*
  * Allocate per cpu pagesets and initialize them.
  * Before this call only boot pagesets were available.
  */
@@ -9466,17 +9477,6 @@ void free_contig_range(unsigned long pfn
 EXPORT_SYMBOL(free_contig_range);
 
 /*
- * The zone indicated has a new number of managed_pages; batch sizes and percpu
- * page high values need to be recalculated.
- */
-void zone_pcp_update(struct zone *zone, int cpu_online)
-{
-	mutex_lock(&pcp_batch_high_lock);
-	zone_set_pageset_high_and_batch(zone, cpu_online);
-	mutex_unlock(&pcp_batch_high_lock);
-}
-
-/*
  * Effectively disable pcplists for the zone by setting the high limit to 0
  * and draining all cpus. A concurrent page freeing on another CPU that's about
  * to put the page on pcplist will either finish before the drain and the page
_

Patches currently in -mm which might be from linmiaohe@huawei.com are

mm-hwpoison-use-clearpagehwpoison-in-memory_failure.patch
mm-hwpoison-use-__pagemovable-to-detect-non-lru-movable-pages.patch
mm-hwpoison-use-num_poisoned_pages_sub-to-decrease-num_poisoned_pages.patch
mm-hwpoison-avoid-unneeded-page_mapped_in_vma-overhead-in-collect_procs_anon.patch
mm-hwpoison-check-pagetable-explicitly-in-hwpoison_user_mappings.patch
mm-hwpoison-cleanup-some-obsolete-comments.patch
writeback-remove-unused-macro-dirty_full_scope.patch
mm-page_alloc-ensure-kswapd-doesnt-accidentally-go-to-sleep.patch
mm-page_alloc-make-zone_pcp_update-static.patch
mm-remove-obsolete-macro-nr_pcp_order_mask-and-nr_pcp_order_width.patch
mm-page_alloc-remove-obsolete-comment-in-zone_statistics.patch
mm-page_alloc-add-__init-annotations-to-init_mem_debugging_and_hardening.patch
mm-page_alloc-fix-freeing-static-percpu-memory.patch
mm-remove-obsolete-pgdat_is_empty.patch
mm-page_alloc-add-missing-is_migrate_isolate-check-in-set_page_guard.patch
mm-page_alloc-use-local-variable-zone_idx-directly.patch
mm-memory_hotplug-remove-obsolete-generic_free_nodedata.patch
mm-page_alloc-make-boot_nodestats-static.patch
mm-page_alloc-use-helper-macro-sz_1km.patch
mm-page_alloc-init-local-variable-buddy_pfn.patch
mm-page_alloc-use-costly_order-in-warn_on_once_gfp.patch
mm-page_alloc-remove-obsolete-gfpflags_normal_context.patch
mm-page_alloc-fix-obsolete-comment-in-deferred_pfn_valid.patch