On Tue, May 21, 2024 at 5:38 AM Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> wrote:
>
> Folios of order <= 1 are not in deferred list, the check of order
> is added into folio_undo_large_rmappable() from commit 8897277acfef
> ("mm: support order-1 folios in the page cache"), but there is a
> repeated check for small folio (order 0) during each call of the
> folio_undo_large_rmappable(), so only keep folio_order() check
> inside the function.
>
> In addition, move all the checks into header file to save a function
> call for non-large-rmappable or empty deferred_list folio.
>
> Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@xxxxxxxxx>
