thp: introduce deferred_split_huge_page()

[platform/kernel/linux-starfive.git] / include / linux / mm_types.h

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 809defe..2dd9c31 100644 (file)
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -55,6 +55,7 @@ struct page {
                                                 */
                void *s_mem;                    /* slab first object */
                atomic_t compound_mapcount;     /* first tail page */
+               /* page_deferred_list().next     -- second tail page */
        };
 
        /* Second double word */
@@ -62,6 +63,7 @@ struct page {
                union {
                        pgoff_t index;          /* Our offset within mapping. */
                        void *freelist;         /* sl[aou]b first free object */
+                       /* page_deferred_list().prev    -- second tail page */
                };
 
                union {