[merged mm-nonmm-stable] raid6-defer-implementation-selection-when-built-in.patch removed from -mm tree

The quilt patch titled
     Subject: raid6: defer implementation selection when built-in
has been removed from the -mm tree.  Its filename was
     raid6-defer-implementation-selection-when-built-in.patch

This patch was dropped because it was merged into the mm-nonmm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Christoph Hellwig <[email protected]>
Subject: raid6: defer implementation selection when built-in
Date: Wed, 15 Jul 2026 16:47:37 +0200

Don't hold up early boot and defer the selection just like we've been
doing for the RAID5 XOR code since commit 524ccdbdfb52 ("crypto: xor -
defer load time benchmark to a later time").

This will also allow full use of the timing subsystem for benchmarking.

Link: https://lore.kernel.org/[email protected]
Signed-off-by: Christoph Hellwig <[email protected]>
Cc: Eric Biggers <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---

 lib/raid/raid6/algos.c |   25 +++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

--- a/lib/raid/raid6/algos.c~raid6-defer-implementation-selection-when-built-in
+++ a/lib/raid/raid6/algos.c
@@ -239,10 +239,6 @@ static int __init raid6_select_algo(void
 	if (!IS_ENABLED(CONFIG_RAID6_PQ_BENCHMARK) || raid6_nr_algos == 1) {
 		pr_info("raid6: skipped pq benchmark and selected %s\n",
 			raid6_algos[raid6_nr_algos - 1]->name);
-		static_call_update(raid6_gen_syndrome_impl,
-				raid6_algos[raid6_nr_algos - 1]->gen_syndrome);
-		static_call_update(raid6_xor_syndrome_impl,
-				raid6_algos[raid6_nr_algos - 1]->xor_syndrome);
 		return 0;
 	}
 
@@ -329,13 +325,34 @@ static int __init raid6_init(void)
 	static_call_update(raid6_recov_datap_impl, raid6_recov_algo->datap);
 	pr_info("raid6: using %s recovery algorithm\n", raid6_recov_algo->name);
 
+	/*
+	 * Pick the last registered implementation as the temporary default until
+	 * calibration happens.
+	 */
+	static_call_update(raid6_gen_syndrome_impl,
+			raid6_algos[raid6_nr_algos - 1]->gen_syndrome);
+	static_call_update(raid6_xor_syndrome_impl,
+			raid6_algos[raid6_nr_algos - 1]->xor_syndrome);
+
+#ifdef MODULE
 	return raid6_select_algo();
+#else
+	return 0;
+#endif
 }
 
 static void __exit raid6_exit(void)
 {
 }
 
+/*
+ * When built-in we must register the default implementation before md
+ * initializes, but we don't want calibration to run that early as that
+ * would delay the boot process.
+ */
+#ifndef MODULE
+device_initcall(raid6_select_algo);
+#endif
 subsys_initcall(raid6_init);
 module_exit(raid6_exit);
 MODULE_LICENSE("GPL");
_

Patches currently in -mm which might be from [email protected] are

mm-remove-wb_writeout_inc.patch
shmem-provide-a-shmem_write_folio-wrapper.patch
mm-swap-introduce-struct-swap_io_ctx.patch
mm-swap-also-use-struct-swap_iocb-for-block-i-o.patch
mm-swap-remove-count_swpout_vm_event.patch
mm-swap-use-swap_ops-to-register-swap-devices-methods.patch
mm-swap-remove-swp_fs_ops.patch
mm-vmstat-add-nrswpinout-counters.patch