On 2024/3/21 11:35, Matthew Wilcox wrote:
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).
Yes, only order-0 now, I will drop it.
If you want to take on converting aio to use folios instead of pages,
that'd be a worthwhile project.
OK, will try, thanks for your review.
