linux-kernel - [PATCH v2 0/2] mm: batch free swaps for zap_pte

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Message-Id: <20240807082508.358322-1-21cnbao@gmail.com>
Date: Wed,  7 Aug 2024 20:25:06 +1200
From: Barry Song <21cnbao@...il.com>
To: akpm@...ux-foundation.org,
	linux-mm@...ck.org
Cc: justinjiang@...o.com,
	chrisl@...nel.org,
	david@...hat.com,
	hughd@...gle.com,
	kaleshsingh@...gle.com,
	kasong@...cent.com,
	linux-kernel@...r.kernel.org,
	ryan.roberts@....com,
	v-songbaohua@...o.com,
	ying.huang@...el.com
Subject: [PATCH v2 0/2] mm: batch free swaps for zap_pte_range()

From: Barry Song <v-songbaohua@...o.com>

Batch free swap slots for zap_pte_range(), making munmap three times
faster when the page table entries are filled with swap entries to
be freed. This is likely another advantage of using mTHP.

-v2:
  * cleanup the name of the instances of swap_info_struct, per
    Andrew, David;
  * refine the code to add fallback in the batch free function,
    Thanks for David's suggestion.
-v1:
  https://lore.kernel.org/all/20240806012409.61962-1-21cnbao@gmail.com/

Barry Song (2):
  mm: rename instances of swap_info_struct to meaningful 'si'
  mm: attempt to batch free swap entries for zap_pte_range()

 mm/swapfile.c | 412 ++++++++++++++++++++++++++++----------------------
 1 file changed, 234 insertions(+), 178 deletions(-)

-- 
2.34.1