[rfc,0/4] mm: filemap: try to batch lruvec stat updating

Message

Kefeng Wang April 29, 2024, 7:24 a.m. UTC

It is similar to mm counter updating, try to batch lruvec stat updating,
which could save most of time when all folios in same memcg/padat,
lat_pagefault shows 3~4% improvement.

Kefeng Wang (4):
  mm: memory: add prepare_range_pte_entry()
  mm: filemap: add filemap_set_pte_range()
  mm: filemap: move __lruvec_stat_mod_folio() out of
    filemap_set_pte_range()
  mm: filemap: try to batch lruvec stat updating

 include/linux/mm.h   |  2 ++
 include/linux/rmap.h |  2 ++
 mm/filemap.c         | 75 ++++++++++++++++++++++++++++++++++++--------
 mm/memory.c          | 33 ++++++++++++-------
 mm/rmap.c            | 16 ++++++++++
 5 files changed, 104 insertions(+), 24 deletions(-)