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mm/page_alloc: make zone_pcp_update() static

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Since commit b92ca18e8c ("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>
This commit is contained in:
Miaohe Lin 2022-09-16 15:22:43 +08:00 committed by Andrew Morton
parent ce96fa6223
commit b89f173516
2 changed files with 11 additions and 12 deletions
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1
mm/internal.h
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@ -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);

22
mm/page_alloc.c
View File

@ -7242,6 +7242,17 @@ void __meminit setup_zone_pageset(struct zone *zone)
zone_set_pageset_high_and_batch(zone, 0);
}
/*
* 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.
@ -9473,17 +9484,6 @@ void free_contig_range(unsigned long pfn, unsigned long nr_pages)
}
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