diff --git a/mm/huge_memory.c b/mm/huge_memory.c
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -4476,6 +4476,17 @@ static unsigned long deferred_split_count(struct shrinker *shrink,
 {
 	unsigned long count;
 
+	/*
+	 * Splitting a partially mapped folio during an opportunistic
+	 * high-order pass frees its unmapped tail pages but shatters the
+	 * folio, so the pass works against the contiguous block it is
+	 * reclaiming for. Report nothing rather than SHRINK_EMPTY: for a
+	 * memcg aware shrinker SHRINK_EMPTY clears the memcg shrinker bit,
+	 * which would also skip the next normal pass.
+	 */
+	if (sc->opportunistic_compaction)
+		return 0;
+
 	count = list_lru_shrink_count(&deferred_split_lru, sc);
 	return count ?: SHRINK_EMPTY;
 }