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[$] The ongoing search for mmap_lock scalability
Friday May 6, 2022. 04:59 PM , from LWN.net
There are certain themes that recur regularly at the Linux Storage,
Filesystem, Memory-Management, and BPF Summit; among the most reliable is the scalability problems posed by the mmap_lock (formerly mmap_sem) lock. This topic has come up in (at least) 2013, 2018 (twice), and 2019. The 2022 event was no exception, with three consecutive sessions led by Liam Howlett, Michel Lespinasse, and Suren Baghdasaryan dedicated to the topic. There are improvements on the horizon, but the problem is far from solved.
https://lwn.net/Articles/893906/
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