From: "Alex Shi (tencent)" <alexs@kernel.org>

This is the first part of page to folio transfer on KSM. Since only
single page could be stored in KSM, we could safely transfer stable tree
pages to folios. 
This patchset could reduce ksm.o size to 2487136 from 2547952 bytes on
latest akpm/mm-stable branch with CONFIG_DEBUG_VM enabled.


Alex Shi (tencent) (11):
  mm/ksm: Convert get_ksm_page to return a folio
  mm/ksm: use a folio in remove_rmap_item_from_tree
  mm/ksm: use a folio in remove_stable_node
  mm/ksm: use folio in stable_node_dup
  mm/ksm: use a folio in scan_get_next_rmap_item func
  mm/ksm: use folio in write_protect_page
  mm/ksm: Convert chain series funcs to use folio
  mm/ksm: Convert stable_tree_insert to use folio
  mm/ksm: Convert stable_tree_search to use folio
  mm/ksm: rename get_ksm_page to get_ksm_folio and return type
  mm/ksm: return folio for chain series funcs

 mm/ksm.c | 244 +++++++++++++++++++++++++++----------------------------
 1 file changed, 122 insertions(+), 122 deletions(-)

-- 
2.43.0