Re: [PATCH v4 5/7] mm: thp: split huge page to any lower order pages (except order-1).

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On Tue, Feb 13, 2024 at 04:55:18PM -0500, Zi Yan wrote:
> From: Zi Yan <ziy@xxxxxxxxxx>
> Order-1 folio is not supported because _deferred_list, which is used by
> partially mapped folios, is stored in subpage 2 and an order-1 folio only
> has subpage 0 and 1.

The LBS patches has the patch from Matthew which enables and allowed us
to successfully test order 1. So this restriction could be dropped if
that gets merged.


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