diff options
| author | Kemeng Shi <shikemeng@huaweicloud.com> | 2023-09-27 12:35:14 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-10-18 23:34:15 +0200 |
| commit | 0dfca313a009c83e2ad44b3719dc1222df6c6db5 (patch) | |
| tree | ebd3d7b57797ced85e48564e6bd99931fe03d8bb /mm/page_alloc.c | |
| parent | mm/page_alloc: remove unnecessary check in break_down_buddy_pages (diff) | |
| download | linux-0dfca313a009c83e2ad44b3719dc1222df6c6db5.tar.xz linux-0dfca313a009c83e2ad44b3719dc1222df6c6db5.zip | |
mm/page_alloc: remove unnecessary next_page in break_down_buddy_pages
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@huaweicloud.com
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index fdb68b7c8240..f46e519618a0 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -6462,20 +6462,18 @@ 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; |