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[0/5] Clean up and fixes for swap

Message ID 20221208180209.50845-1-ryncsn@gmail.com (mailing list archive)
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Series Clean up and fixes for swap | expand

Message

Kairui Song Dec. 8, 2022, 6:02 p.m. UTC 
From: Kairui Song <kasong@tencent.com>

This series cleanup some code path, saves a few cycles and reduce the
object size by a bit, also fixes some rare race issue of statistics.

Kairui Song (5):
  swapfile: get rid of volatile and avoid redundant read
  swap: avoid a redundant pte map if ra window is 1
  swap: fold swap_ra_clamp_pfn into swap_ra_info
  swap: remove the swap lock in swap_cache_get_folio
  swap: avoid ra statistic lost when swapin races

 mm/shmem.c      |  8 +++++-
 mm/swap_state.c | 66 +++++++++++++++++++------------------------------
 mm/swapfile.c   |  7 +++---
 3 files changed, 36 insertions(+), 45 deletions(-)