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.
Signed-off-by: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
Acked-by: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
---
mm/page_alloc.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index bad979493dde..7df77b58a961 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6678,20 +6678,18 @@ static void break_down_buddy_pages(struct zone *zone, struct page *page,
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;
--
2.30.0
