From: Xie Yuanbin <xieyuanbin1@huawei.com>
Date: Mon, 22 Sep 2025 14:36:18 +0000 (+0800)
Subject: mm/memory-failure: don't select MEMORY_ISOLATION
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=cde31ecdd1aa1cc495bdf6d5cba84adc276d8861;p=thirdparty%2Fkernel%2Fstable.git

mm/memory-failure: don't select MEMORY_ISOLATION

We added that "select MEMORY_ISOLATION" in commit ee6f509c3274 ("mm:
factor out memory isolate functions").  However, in commit add05cecef80
("mm: soft-offline: don't free target page in successful page migration")
we remove the need for it, where we removed the calls to
set_migratetype_isolate() etc.

What CONFIG_MEMORY_FAILURE soft-offline support wants is migrate_pages()
support.  But that comes with CONFIG_MIGRATION.  And
isolate_folio_to_list() has nothing to do with CONFIG_MEMORY_ISOLATION.

Therefore, we can remove "select MEMORY_ISOLATION" of MEMORY_FAILURE.

Link: https://lkml.kernel.org/r/20250922143618.48640-1-xieyuanbin1@huawei.com
Signed-off-by: Xie Yuanbin <xieyuanbin1@huawei.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/Kconfig b/mm/Kconfig
index d1ed839ca710c..bde9f842a4a8c 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -748,7 +748,6 @@ config MEMORY_FAILURE
 	depends on MMU
 	depends on ARCH_SUPPORTS_MEMORY_FAILURE
 	bool "Enable recovery from hardware memory errors"
-	select MEMORY_ISOLATION
 	select RAS
 	help
 	  Enables code to recover from some memory failures on systems