* [PATCH] mm/page_alloc: Don't pass pfn to free_unref_page_commit()
@ 2022-02-02 14:04 Nicolas Saenz Julienne
2022-02-02 14:19 ` Matthew Wilcox
0 siblings, 1 reply; 2+ messages in thread
From: Nicolas Saenz Julienne @ 2022-02-02 14:04 UTC (permalink / raw)
To: akpm, linux-mm, linux-kernel; +Cc: Nicolas Saenz Julienne, Vlastimil Babka
free_unref_page_commit() doesn't make use of its pfn argument, so get
rid of it.
Signed-off-by: Nicolas Saenz Julienne <nsaenzju@redhat.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
---
NOTE:
This first appeared here, where Vlastimil gave his Reviewed-by:
https://lore.kernel.org/lkml/51e45c99-1ad8-339b-0c6a-e88288fa41ba@suse.cz/
The rest of the series was discarded, but this patch has value on its
own.
mm/page_alloc.c | 17 ++++++-----------
1 file changed, 6 insertions(+), 11 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 7c417bec8207..4f549123150c 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3422,8 +3422,8 @@ static int nr_pcp_high(struct per_cpu_pages *pcp, struct zone *zone)
return min(READ_ONCE(pcp->batch) << 2, high);
}
-static void free_unref_page_commit(struct page *page, unsigned long pfn,
- int migratetype, unsigned int order)
+static void free_unref_page_commit(struct page *page, int migratetype,
+ unsigned int order)
{
struct zone *zone = page_zone(page);
struct per_cpu_pages *pcp;
@@ -3472,7 +3472,7 @@ void free_unref_page(struct page *page, unsigned int order)
}
local_lock_irqsave(&pagesets.lock, flags);
- free_unref_page_commit(page, pfn, migratetype, order);
+ free_unref_page_commit(page, migratetype, order);
local_unlock_irqrestore(&pagesets.lock, flags);
}
@@ -3482,13 +3482,13 @@ void free_unref_page(struct page *page, unsigned int order)
void free_unref_page_list(struct list_head *list)
{
struct page *page, *next;
- unsigned long flags, pfn;
+ unsigned long flags;
int batch_count = 0;
int migratetype;
/* Prepare pages for freeing */
list_for_each_entry_safe(page, next, list, lru) {
- pfn = page_to_pfn(page);
+ unsigned long pfn = page_to_pfn(page);
if (!free_unref_page_prepare(page, pfn, 0)) {
list_del(&page->lru);
continue;
@@ -3504,15 +3504,10 @@ void free_unref_page_list(struct list_head *list)
free_one_page(page_zone(page), page, pfn, 0, migratetype, FPI_NONE);
continue;
}
-
- set_page_private(page, pfn);
}
local_lock_irqsave(&pagesets.lock, flags);
list_for_each_entry_safe(page, next, list, lru) {
- pfn = page_private(page);
- set_page_private(page, 0);
-
/*
* Non-isolated types over MIGRATE_PCPTYPES get added
* to the MIGRATE_MOVABLE pcp list.
@@ -3522,7 +3517,7 @@ void free_unref_page_list(struct list_head *list)
migratetype = MIGRATE_MOVABLE;
trace_mm_page_free_batched(page);
- free_unref_page_commit(page, pfn, migratetype, 0);
+ free_unref_page_commit(page, migratetype, 0);
/*
* Guard against excessive IRQ disabled times when we get
--
2.34.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] mm/page_alloc: Don't pass pfn to free_unref_page_commit()
2022-02-02 14:04 [PATCH] mm/page_alloc: Don't pass pfn to free_unref_page_commit() Nicolas Saenz Julienne
@ 2022-02-02 14:19 ` Matthew Wilcox
0 siblings, 0 replies; 2+ messages in thread
From: Matthew Wilcox @ 2022-02-02 14:19 UTC (permalink / raw)
To: Nicolas Saenz Julienne; +Cc: akpm, linux-mm, linux-kernel, Vlastimil Babka
On Wed, Feb 02, 2022 at 03:04:51PM +0100, Nicolas Saenz Julienne wrote:
> free_unref_page_commit() doesn't make use of its pfn argument, so get
> rid of it.
>
> Signed-off-by: Nicolas Saenz Julienne <nsaenzju@redhat.com>
> Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-02-02 14:04 [PATCH] mm/page_alloc: Don't pass pfn to free_unref_page_commit() Nicolas Saenz Julienne
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