Add new base and BORE-enabled Linux kernel packages for Omarchy

Signed-off-by: Krzysztof Wilczyński <kwilczynski@omarchy.org>

pkgbuilds/linux-omarchy/8208-mm-thp-deferred-split-uses-hint.patch

@@ -0,0 +1,21 @@
+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;
+ }