[PATCH 16/16] mm/page_alloc: fix obsolete comment in deferred_pfn_valid()

[Miaohe Lin]

There are no architectures that can have holes in the memory map within
a pageblock since commit 859a85ddf90e ("mm: remove pfn_valid_within()
and CONFIG_HOLES_IN_ZONE"). Update the corresponding comment.

Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
---
 mm/page_alloc.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 262e8972e019..4cc0232020d2 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1929,11 +1929,7 @@ static inline void __init pgdat_init_report_one_done(void)
 /*
  * Returns true if page needs to be initialized or freed to buddy allocator.
  *
- * First we check if pfn is valid on architectures where it is possible to have
- * holes within pageblock_nr_pages. On systems where it is not possible, this
- * function is optimized out.
- *
- * Then, we check if a current large page is valid by only checking the validity
+ * We check if a current large page is valid by only checking the validity
  * of the head pfn.
  */
 static inline bool __init deferred_pfn_valid(unsigned long pfn)
-- 
2.23.0