[PATCH 00/22] Convert the swap code to be more folio-based

["Matthew Wilcox (Oracle)" <willy@infradead.org>]

(resend due to email address mistake)

There's still more to do with the swap code, but this reaps a lot of
the folio benefit.  More than 4kB of kernel text saved (with the UEK7
kernel config).  I don't know how much that's going to translate into
CPU savings, but some of those compound_head() calls are on every page
free, so it should be noticable.  It might even be noticable just from
an I-cache consumption perspective.

This is against next-20220617 plus my prior vmscan patch series.  It's in
the middle of an xfstests run right now, so it at least boots.

Matthew Wilcox (Oracle) (22):
  mm: Add folios_put()
  mm/swap: Add folio_batch_move_lru()
  mm/swap: Make __pagevec_lru_add static
  mm/swap: Convert lru_add to a folio_batch
  mm/swap: Convert lru_deactivate_file to a folio_batch
  mm/swap: Convert lru_deactivate to a folio_batch
  mm/swap: Convert lru_lazyfree to a folio_batch
  mm/swap: Convert activate_page to a folio_batch
  mm/swap: Rename lru_pvecs to cpu_fbatches
  mm/swap: Pull the CPU conditional out of __lru_add_drain_all()
  mm/swap: Optimise lru_add_drain_cpu()
  mm/swap: Convert try_to_free_swap to use a folio
  mm/swap: Convert release_pages to use a folio internally
  mm/swap: Convert put_pages_list to use folios
  mm/swap: Convert __put_page() to __folio_put()
  mm/swap: Convert __put_single_page() to __folio_put_small()
  mm/swap: Convert __put_compound_page() to __folio_put_large()
  mm/swap: Convert __page_cache_release() to use a folio
  mm: Convert destroy_compound_page() to destroy_large_folio()
  mm: Convert page_swap_flags to folio_swap_flags
  mm/swap: Convert delete_from_swap_cache() to take a folio
  mm/swap: Convert __delete_from_swap_cache() to a folio

 include/linux/mm.h      |  33 ++-
 include/linux/pagemap.h |   2 -
 include/linux/pagevec.h |   1 -
 mm/memory-failure.c     |   5 +-
 mm/shmem.c              |   4 +-
 mm/swap.c               | 599 +++++++++++++++++++---------------------
 mm/swap.h               |  14 +-
 mm/swap_state.c         |  39 +--
 mm/swapfile.c           |  23 +-
 mm/vmscan.c             |   8 +-
 net/core/page_pool.c    |   2 +-
 11 files changed, 359 insertions(+), 371 deletions(-)

-- 
2.35.1