On Aug 28, 2021, at 1:04 PM, Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote: > > The current folio work is focused on permitting the VM to use > physically contiguous chunks of memory. Both Darrick and Johannes > have pointed out the advantages of supporting logically-contiguous, > physically-discontiguous chunks of memory. Johannes wants to be able to > use order-0 allocations to allocate larger folios, getting the benefit > of managing the memory in larger chunks without requiring the memory > allocator to be able to find contiguous chunks. Darrick wants to support > non-power-of-two block sizes. What is the use case for non-power-of-two block sizes? The main question is whether that use case is important enough to add the complexity and overhead in order to support it? Cheers, Andreas
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