Subj : [$] Faster page faults with RCU-protected VMA walks
To   : All
From : LWN.net
Date : Wed May 22 2024 15:00:06

[$] Faster page faults with RCU-protected VMA walks

Date:
Wed, 22 May 2024 13:55:33 +0000

Description:
Looking up a virtual memory area (VMA) in a process's address space, for
the handling of page faults or any of a number of other tasks, in
multi-threaded processes has long been bedeviled by lock contention in the
kernel.  As a result, developer gatherings have been subjected to many
sessions on how to improve the situation.  At the 2024 Linux Storage,
Filesystem, Memory-Management and BPF Summit , developers in the
memory-management track met, in a session led by Liam Howlett, to talk
about a situation that has improved considerably in recent times, but which
still offers opportunities for optimization.

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Link to news story:
https://lwn.net/Articles/974392/


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