+ memory-tier-remove-unneeded-is_enabledconfig_migration-check.patch added to mm-unstable branch

+ memory-tier-remove-unneeded-is_enabledconfig_migration-check.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: memory tier: remove unneeded !IS_ENABLED(CONFIG_MIGRATION) check
has been added to the -mm mm-unstable branch.  Its filename is
     memory-tier-remove-unneeded-is_enabledconfig_migration-check.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/memory-tier-remove-unneeded-is_enabledconfig_migration-check.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: Miaohe Lin <linmiaohe@huawei.com>
Subject: memory tier: remove unneeded !IS_ENABLED(CONFIG_MIGRATION) check
Date: Sat, 10 Jun 2023 11:41:14 +0800

establish_demotion_targets() is defined while CONFIG_MIGRATION is
enabled. There's no need to check it again.

Link: https://lkml.kernel.org/r/20230610034114.981861-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memory-tiers.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/memory-tiers.c~memory-tier-remove-unneeded-is_enabledconfig_migration-check
+++ a/mm/memory-tiers.c
@@ -366,7 +366,7 @@ static void establish_demotion_targets(v
 
 	lockdep_assert_held_once(&memory_tier_lock);
 
-	if (!node_demotion || !IS_ENABLED(CONFIG_MIGRATION))
+	if (!node_demotion)
 		return;
 
 	disable_all_demotion_targets();
_

Patches currently in -mm which might be from linmiaohe@huawei.com are

mm-remove-obsolete-alloc_migrate_target.patch
mm-vmscan-mark-kswapd_run-and-kswapd_stop-__meminit.patch
memory-tier-remove-unneeded-disable_all_demotion_targets-when-config_migration.patch
mm-compaction-mark-kcompactd_run-and-kcompactd_stop-__meminit.patch
memory-tier-remove-unneeded-is_enabledconfig_migration-check.patch