linux-kernel - [PATCH v4 0/4] Optimize the fast path of mas

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Message-Id: <20230628073657.75314-1-zhangpeng.00@bytedance.com>
Date:   Wed, 28 Jun 2023 15:36:53 +0800
From:   Peng Zhang <zhangpeng.00@...edance.com>
To:     Liam.Howlett@...cle.com
Cc:     akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, maple-tree@...ts.infradead.org,
        Peng Zhang <zhangpeng.00@...edance.com>
Subject: [PATCH v4 0/4] Optimize the fast path of mas_store()

Add fast paths for mas_wr_append() and mas_wr_slot_store() respectively.
The newly added fast path of mas_wr_append() is used in fork() and how
much it benefits fork() depends on how many VMAs are duplicated.

Thanks Liam for the review.

Changes since v3:
 - Revise the commit log of [4/4]

v1: https://lore.kernel.org/lkml/20230602075353.5917-1-zhangpeng.00@bytedance.com/
v2: https://lore.kernel.org/lkml/20230609120347.63936-1-zhangpeng.00@bytedance.com/
v3: https://lore.kernel.org/lkml/20230615084301.97701-1-zhangpeng.00@bytedance.com/

Peng Zhang (4):
  maple_tree: add test for mas_wr_modify() fast path
  maple_tree: add test for expanding range in RCU mode
  maple_tree: optimize mas_wr_append(), also improve duplicating VMAs
  maple_tree: add a fast path case in mas_wr_slot_store()

 lib/maple_tree.c                 | 69 +++++++++++++++++++----------
 lib/test_maple_tree.c            | 65 +++++++++++++++++++++++++++
 tools/testing/radix-tree/maple.c | 75 ++++++++++++++++++++++++++++++++
 3 files changed, 186 insertions(+), 23 deletions(-)

-- 
2.20.1