"Reclaim" is the task of finding memory that can be taken away from its
current user and put to better uses within the system; it is a core part of
the memory-management picture.  The addition of the multi-generational LRU
(MGLRU) was meant to
provide a better reclaim implementation than the "traditional LRU" that
preceded it, but MGLRU has complicated the situation instead.  No fewer than
three memory-management-track sessions at the 2026 Linux Storage,
Filesystem, Memory Management, and BPF Summit were focused on MGLRU,
with an eye toward integrating it more fully, improving its performance,
and addressing some problems encountered with Android systems.

https://lwn.net/Articles/1072866/
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