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(-)
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2.27.0
