The patch titled
Subject: mm-page_isolation-prepare-for-hygienic-freelists-fix
has been added to the -mm mm-unstable branch. Its filename is
mm-page_isolation-prepare-for-hygienic-freelists-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_isolation-prepare-for-hygienic-freelists-fix.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Johannes Weiner <hannes@xxxxxxxxxxx>
Subject: mm-page_isolation-prepare-for-hygienic-freelists-fix
Date: Thu, 21 Mar 2024 10:24:26 -0400
work around older gcc warning
Link: https://lkml.kernel.org/r/20240321142426.GB777580@xxxxxxxxxxx
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Reviewed-by: Zi Yan <ziy@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: "Huang, Ying" <ying.huang@xxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/mm/page_alloc.c~mm-page_isolation-prepare-for-hygienic-freelists-fix
+++ a/mm/page_alloc.c
@@ -1703,6 +1703,10 @@ bool move_freepages_block_isolate(struct
NULL, NULL))
return false;
+ /* No splits needed if buddies can't span multiple blocks */
+ if (pageblock_order == MAX_PAGE_ORDER)
+ goto move;
+
/* We're a tail block in a larger buddy */
pfn = find_large_buddy(start_pfn);
if (pfn != start_pfn) {
@@ -1730,7 +1734,7 @@ bool move_freepages_block_isolate(struct
split_large_buddy(zone, page, pfn, order);
return true;
}
-
+move:
mt = get_pfnblock_migratetype(page, start_pfn);
nr_moved = move_freepages(zone, start_pfn, end_pfn, migratetype);
if (!is_migrate_isolate(mt))
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
mm-cachestat-fix-two-shmem-bugs.patch
mm-zswap-fix-writeback-shinker-gfp_noio-gfp_nofs-recursion.patch
mm-zswap-optimize-zswap-pool-size-tracking.patch
mm-zpool-return-pool-size-in-pages.patch
mm-page_alloc-remove-pcppage-migratetype-caching.patch
mm-page_alloc-optimize-free_unref_folios.patch
mm-page_alloc-fix-up-block-types-when-merging-compatible-blocks.patch
mm-page_alloc-move-free-pages-when-converting-block-during-isolation.patch
mm-page_alloc-fix-move_freepages_block-range-error.patch
mm-page_alloc-fix-freelist-movement-during-block-conversion.patch
mm-page_alloc-close-migratetype-race-between-freeing-and-stealing.patch
mm-page_isolation-prepare-for-hygienic-freelists.patch
mm-page_isolation-prepare-for-hygienic-freelists-fix.patch
mm-page_alloc-consolidate-free-page-accounting.patch
