[folded-merged] mm-page_alloc-find_large_buddy-from-start_pfn-aligned-order-v2.patch removed from -mm tree

[folded-merged] mm-page_alloc-find_large_buddy-from-start_pfn-aligned-order-v2.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm-page_alloc-find_large_buddy-from-start_pfn-aligned-order-v2
has been removed from the -mm tree.  Its filename was
     mm-page_alloc-find_large_buddy-from-start_pfn-aligned-order-v2.patch

This patch was dropped because it was folded into mm-page_alloc-find_large_buddy-from-start_pfn-aligned-order.patch

------------------------------------------------------
From: Wei Yang <richard.weiyang@gmail.com>
Subject: mm-page_alloc-find_large_buddy-from-start_pfn-aligned-order-v2
Date: Tue, 2 Sep 2025 02:58:07 +0000

add comment on assignment of order

Link: https://lkml.kernel.org/r/20250828091618.7869-1-richard.weiyang@gmail.com
Link: https://lkml.kernel.org/r/20250902025807.11467-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/page_alloc.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/mm/page_alloc.c~mm-page_alloc-find_large_buddy-from-start_pfn-aligned-order-v2
+++ a/mm/page_alloc.c
@@ -2033,6 +2033,12 @@ static int move_freepages_block(struct z
 /* Look for a buddy that straddles start_pfn */
 static unsigned long find_large_buddy(unsigned long start_pfn)
 {
+	/*
+	 * If start_pfn is not an order-0 PageBuddy, next PageBuddy containing
+	 * start_pfn has minimal order of __ffs(start_pfn) + 1. Start checking
+	 * the order with __ffs(start_pfn). If start_pfn is order-0 PageBuddy,
+	 * the starting order does not matter.
+	 */
 	int order = start_pfn ? __ffs(start_pfn) : MAX_PAGE_ORDER;
 	struct page *page;
 	unsigned long pfn = start_pfn;
_

Patches currently in -mm which might be from richard.weiyang@gmail.com are

mm-rmap-do-__folio_mod_stat-in-__folio_add_rmap.patch
selftests-mm-do-check_huge_anon-with-a-number-been-passed-in.patch
selftests-mm-put-general-ksm-operation-into-vm_util.patch
selftests-mm-test-that-rmap-behave-as-expected.patch
mm-rmap-not-necessary-to-mask-off-folio_pages_mapped.patch
mm-rmap-use-folio_large_nr_pages-when-we-are-sure-it-is-a-large-folio.patch
mm-khugepaged-use-list_xxx-helper-to-improve-readability.patch
mm-page_alloc-use-xxx_pageblock_isolate-for-better-reading.patch
mm-pageblock-flags-remove-pb_migratetype_bits-pb_migrate_end.patch
mm-page_alloc-find_large_buddy-from-start_pfn-aligned-order.patch
mm-page_alloc-check-the-correct-buddy-if-it-is-a-starting-block.patch
mm-compaction-fix-low_pfn-advance-on-isolating-hugetlb.patch