[merged mm-stable] mm-page_alloc-move-free-pages-when-converting-block-during-isolation.patch removed from -mm tree

[merged mm-stable] mm-page_alloc-move-free-pages-when-converting-block-during-isolation.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm: page_alloc: move free pages when converting block during isolation
has been removed from the -mm tree.  Its filename was
     mm-page_alloc-move-free-pages-when-converting-block-during-isolation.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: Johannes Weiner <hannes@cmpxchg.org>
Subject: mm: page_alloc: move free pages when converting block during isolation
Date: Wed, 20 Mar 2024 14:02:09 -0400

When claiming a block during compaction isolation, move any remaining free
pages to the correct freelists as well, instead of stranding them on the
wrong list.  Otherwise, this encourages incompatible page mixing down the
line, and thus long-term fragmentation.

Link: https://lkml.kernel.org/r/20240320180429.678181-5-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Tested-by: "Huang, Ying" <ying.huang@intel.com>
Tested-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/page_alloc.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/mm/page_alloc.c~mm-page_alloc-move-free-pages-when-converting-block-during-isolation
+++ a/mm/page_alloc.c
@@ -2653,9 +2653,12 @@ int __isolate_free_page(struct page *pag
 			 * Only change normal pageblocks (i.e., they can merge
 			 * with others)
 			 */
-			if (migratetype_is_mergeable(mt))
+			if (migratetype_is_mergeable(mt)) {
 				set_pageblock_migratetype(page,
 							  MIGRATE_MOVABLE);
+				move_freepages_block(zone, page,
+						     MIGRATE_MOVABLE, NULL);
+			}
 		}
 	}
 
_

Patches currently in -mm which might be from hannes@cmpxchg.org are