[PATCH v3 0/3] mm: zswap: optimize zswap invalidate and store

[Kefeng Wang <wangkefeng.wang@huawei.com>]

This series range-ifies zswap_invalidate() to skip xarray lookups
when zswap is unused, and reuses it in zswap_store() to eliminate
redundant per-slot lookups and open-coded logic.

v3:
- make zswap_invalidate() to take nr_entries and add
  zswap_never_enabled() into it
- since all patches refreshed, so no ACK/RB added

v2:
- split patches and refactor zswap_invalidate(), suggested by
  Johannes Weiner
- add patch4 to skip zswap_invalidate() in swap_range_free()

Kefeng Wang (3):
  mm: zswap: convert zswap_invalidate() to take a range
  mm: zswap: skip xarray walk in zswap_invalidate() when zswap is unused
  mm: zswap: reuse zswap_invalidate() in zswap_store()

 include/linux/zswap.h |  8 ++++++--
 mm/swapfile.c         |  4 +---
 mm/zswap.c            | 45 ++++++++++++++++++++++---------------------
 3 files changed, 30 insertions(+), 27 deletions(-)

-- 
2.55.0