On Tue, Apr 8, 2025 at 10:06 AM Luis Chamberlain <mcgrof@xxxxxxxxxx> wrote: > Fun > puzzle for the community is figuring out *why* oh why did a large folio > end up being used on buffer-heads for your use case *without* an LBS > device (logical block size) being present, as I assume you didn't have > one, ie say a nvme or virtio block device with logical block size > > PAGE_SIZE. The area in question would trigger on folio migration *only* > if you are migrating large buffer-head folios. We only create those To be clear, large folios for buffer-heads. > if > you have an LBS device and are leveraging the block device cache or a > filesystem with buffer-heads with LBS (they don't exist yet other than > the block device cache). Luis
