The quilt patch titled
Subject: mm/page_alloc: remove unnecessary next_page in break_down_buddy_pages
has been removed from the -mm tree. Its filename was
mm-page_alloc-remove-unnecessary-next_page-in-break_down_buddy_pages.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
Subject: mm/page_alloc: remove unnecessary next_page in break_down_buddy_pages
Date: Wed, 27 Sep 2023 18:35:14 +0800
The next_page is only used to forward page in case target is in second
half range. Move forward page directly to remove unnecessary next_page.
Link: https://lkml.kernel.org/r/20230927103514.98281-3-shikemeng@xxxxxxxxxxxxxxx
Signed-off-by: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
Acked-by: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Oscar Salvador <osalvador@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- a/mm/page_alloc.c~mm-page_alloc-remove-unnecessary-next_page-in-break_down_buddy_pages
+++ a/mm/page_alloc.c
@@ -6462,20 +6462,18 @@ static void break_down_buddy_pages(struc
int migratetype)
{
unsigned long size = 1 << high;
- struct page *current_buddy, *next_page;
+ struct page *current_buddy;
while (high > low) {
high--;
size >>= 1;
if (target >= &page[size]) {
- next_page = page + size;
current_buddy = page;
+ page = page + size;
} else {
- next_page = page;
current_buddy = page + size;
}
- page = next_page;
if (set_page_guard(zone, current_buddy, high, migratetype))
continue;
_
Patches currently in -mm which might be from shikemeng@xxxxxxxxxxxxxxx are
