On Thu, Aug 31, 2023 at 09:57:46AM +0200, David Hildenbrand wrote:

As raised in another mail, we can then discuss
* how we want to call this feature (transparent large pages? there is
  the concern that "THP" might confuse users. Maybe we can consider
  "large" the more generic version and "huge" only PMD-size, TBD)
* how to expose it in stats towards the user (e.g., /proc/meminfo)
* which minimal toggles we want

I think there *really* has to be a way to disable it for a running system,
otherwise no distro will dare pulling it in, even after we figured out the
other stuff.

Note that for the pagecache, large folios can be disabled and distributions
are actively making use of that.

You can't.  Well, you can for shmem/tmpfs, but you have to edit the
source code or disable CONFIG_TRANSPARENT_HUGEPAGE to disable it for XFS.

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