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 Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Miaohe Lin <linmiaohe@xxxxxxxxxx> 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@xxxxxxxxxx Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx> Reviewed-by: David Hildenbrand <david@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- 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@xxxxxxxxxx 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