[PATCH v2 0/4] mm: zswap: misc optimizations

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

This series cleans up duplication in zswap_invalidate() and adds
fast paths in zswap_store() which now skips redundant xarray lookups,
while swap_range_free() skips needless zswap_invalidate() calls.

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

Kefeng Wang (4):
  mm: zswap: pass type and offset to zswap_invalidate() directly
  mm: zswap: reuse zswap_invalidate() in zswap_store() check_old path
  mm: zswap: avoid unnecessary xarray lookup in zswap_store()
  mm: zswap: skip zswap_invalidate() in swap_range_free() when zswap is
    unused

 include/linux/zswap.h |  4 ++--
 mm/swapfile.c         |  6 ++++--
 mm/zswap.c            | 29 +++++++++++++++--------------
 3 files changed, 21 insertions(+), 18 deletions(-)

-- 
2.55.0