From: Johannes Weiner <hannes@cmpxchg.org> mainline inclusion from mainline-v6.10-rc1 commit b54ccd3c6bacbc571f7e61797fb5ff9fe3861413 category: performance bugzilla: https://gitee.com/openeuler/kernel/issues/IBC4T0 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... -------------------------------- 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> Signed-off-by: Liu Shixin <liushixin2@huawei.com> Signed-off-by: Jinjiang Tu <tujinjiang@huawei.com> --- mm/page_alloc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index fa3d2c5a08e0..c8047135965e 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2696,9 +2696,12 @@ int __isolate_free_page(struct page *page, unsigned int order) * 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); + } } } -- 2.43.0