[$] Removing read-only transparent huge pages for the page cache

Date:
Fri, 10 Apr 2026 13:26:00 +0000

Description:
Things do not always go the way kernel developers think they will. When
the kernel gained support for the creation of read-only transparent huge
pages for the page cache in 2019, the developer of that feature, Song Liu, added a Kconfig file entry promising that support for writable huge
pages would arrive " in the next few release cycles ". Over six years
later, that promise is still present, but it will never be fulfilled.
Instead, the read-only option will soon be removed, reflecting how the core
of the memory-subsystem has changed underneath this particular feature.

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Link to news story:
https://lwn.net/Articles/1066582/


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