summaryrefslogtreecommitdiff
path: root/arch/arm64/mm/copypage.c
diff options
context:
space:
mode:
authorJakub Kicinski <kuba@kernel.org>2025-10-16 10:53:13 -0700
committerJakub Kicinski <kuba@kernel.org>2025-10-31 06:46:03 -0700
commit1a2352ad82b515035efe563f997ef8f5ca4f8080 (patch)
tree5ab09f8bb295fef3b0ae901438132fbe757e9d95 /arch/arm64/mm/copypage.c
parent0d0eb186421d0886ac466008235f6d9eedaf918e (diff)
parente5763491237ffee22d9b554febc2d00669f81dee (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.18-rc4). No conflicts, adjacent changes: drivers/net/ethernet/stmicro/stmmac/stmmac_main.c ded9813d17d3 ("net: stmmac: Consider Tx VLAN offload tag length for maxSDU") 26ab9830beab ("net: stmmac: replace has_xxxx with core_type") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'arch/arm64/mm/copypage.c')
-rw-r--r--arch/arm64/mm/copypage.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/arm64/mm/copypage.c b/arch/arm64/mm/copypage.c
index a86c897017df..cd5912ba617b 100644
--- a/arch/arm64/mm/copypage.c
+++ b/arch/arm64/mm/copypage.c
@@ -35,7 +35,7 @@ void copy_highpage(struct page *to, struct page *from)
from != folio_page(src, 0))
return;
- WARN_ON_ONCE(!folio_try_hugetlb_mte_tagging(dst));
+ folio_try_hugetlb_mte_tagging(dst);
/*
* Populate tags for all subpages.
@@ -51,8 +51,13 @@ void copy_highpage(struct page *to, struct page *from)
}
folio_set_hugetlb_mte_tagged(dst);
} else if (page_mte_tagged(from)) {
- /* It's a new page, shouldn't have been tagged yet */
- WARN_ON_ONCE(!try_page_mte_tagging(to));
+ /*
+ * Most of the time it's a new page that shouldn't have been
+ * tagged yet. However, folio migration can end up reusing the
+ * same page without untagging it. Ignore the warning if the
+ * page is already tagged.
+ */
+ try_page_mte_tagging(to);
mte_copy_page_tags(kto, kfrom);
set_page_mte_tagged(to);