On Thu, Jan 11, 2024 at 02:37:41PM +0000, Matthew Wilcox wrote: > On Thu, Jan 11, 2024 at 07:12:32PM +0800, Kefeng Wang wrote: > > Introduce a new pfn_swap_entry_to_folio(), it is similar to > > pfn_swap_entry_to_page(), but return a folio, which allow us > > to completely replace the struct page variables with struct > > folio variables. > > I have the exact same patch in my tree except I called it > pfn_swap_entry_folio(). I also noted: > > Thanks to the compound_head() hidden inside PageLocked(), this saves a > call to compound_head() over calling page_folio(pfn_swap_entry_to_page()) > > > Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> > > Reviewed-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> Oh, and I converted a couple of callers ... migration_entry_wait_on_locked and change_huge_pmd. Those should probably be added to this patch.
