fs: Convert __set_page_dirty_buffers to block_dirty_folio

Convert all callers; mostly this is just changing the aops to point
at it, but a few implementations need a little more work.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Tested-by: Mike Marshall <hubcap@omnibond.com> # orangefs
Tested-by: David Howells <dhowells@redhat.com> # afs
diff --git a/mm/filemap.c b/mm/filemap.c
index 9639b84..bb4e91b 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -72,7 +72,7 @@
  * Lock ordering:
  *
  *  ->i_mmap_rwsem		(truncate_pagecache)
- *    ->private_lock		(__free_pte->__set_page_dirty_buffers)
+ *    ->private_lock		(__free_pte->block_dirty_folio)
  *      ->swap_lock		(exclusive_swap_page, others)
  *        ->i_pages lock
  *
@@ -115,7 +115,7 @@
  *    ->memcg->move_lock	(page_remove_rmap->lock_page_memcg)
  *    bdi.wb->list_lock		(zap_pte_range->set_page_dirty)
  *    ->inode->i_lock		(zap_pte_range->set_page_dirty)
- *    ->private_lock		(zap_pte_range->__set_page_dirty_buffers)
+ *    ->private_lock		(zap_pte_range->block_dirty_folio)
  *
  * ->i_mmap_rwsem
  *   ->tasklist_lock            (memory_failure, collect_procs_ao)