On Thu, Mar 21, 2024 at 11:27:47AM +0800, Kefeng Wang wrote: > Since large folio copy could spend lots of time and it is involved with > a cond_resched(), the aio couldn't support migrate large folio as it takes > a spin lock when folio copy, add explicit check for large folio and return > err directly. This is unnecessary. aio only allocates order-0 folios (it uses find_or_create_page() to do it). If you want to take on converting aio to use folios instead of pages, that'd be a worthwhile project.
