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-rw-r--r--mm/internal.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/internal.h b/mm/internal.h
index 06f816cdb43b..1ac433d2092b 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -36,6 +36,9 @@ struct folio_batch;
*
* Use the PAGETABLE_MOVE() macro to initialise this struct.
*
+ * The old_addr and new_addr fields are updated as the page table move is
+ * executed.
+ *
* NOTE: The page table move is affected by reading from [old_addr, old_end),
* and old_addr may be updated for better page table alignment, so len_in
* represents the length of the range being copied as specified by the user.