Re: [PATCH v3 0/4] Optimize the fast path of mas_store()

From: Peng Zhang
Date: Sun Jun 25 2023 - 00:04:48 EST




在 2023/6/15 16:42, Peng Zhang 写道:
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.

Changes since v2:
- Add test for expanding range in RCU mode. [2/4]

v1: https://lore.kernel.org/lkml/20230602075353.5917-1-zhangpeng.00@xxxxxxxxxxxxx/
v2: https://lore.kernel.org/lkml/20230609120347.63936-1-zhangpeng.00@xxxxxxxxxxxxx/

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(-)

Hi Andrew,

I think this patchset can be queued for testing.
Both v2 and v3 just update the test code.