Merge v6.15.9linux-rolling-stable

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index b91a33fb6c694..225dddff091d7 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1561,6 +1561,10 @@ static int get_hwpoison_page(struct page *p, unsigned long flags)
 	return ret;
 }
 
+/*
+ * The caller must guarantee the folio isn't large folio, except hugetlb.
+ * try_to_unmap() can't handle it.
+ */
 int unmap_poisoned_folio(struct folio *folio, unsigned long pfn, bool must_kill)
 {
 	enum ttu_flags ttu = TTU_IGNORE_MLOCK | TTU_SYNC | TTU_HWPOISON;