With frontswap killed, it's worth converting the zswap_load() and
zswap_store() functions to take a folio instead of a page pointer.
They aren't converted to support large folios, but there are a lot of
unnecessary calls to compound_head() that are removed by these patches.

Matthew Wilcox (Oracle) (5):
  fix-frontswap
  zswap: Make zswap_store() take a folio
  memcg: Convert get_obj_cgroup_from_page to get_obj_cgroup_from_folio
  swap: Remove some calls to compound_head() in swap_readpage()
  zswap: Make zswap_load() take a folio

 include/linux/memcontrol.h |  4 ++--
 include/linux/zswap.h      |  8 ++++----
 mm/memcontrol.c            |  8 ++++----
 mm/page_io.c               | 17 +++++++++--------
 mm/zswap.c                 | 27 +++++++++++++++------------
 5 files changed, 34 insertions(+), 30 deletions(-)

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2.39.2