Acked-by: Chris Li <chrisl@xxxxxxxxxx> Chris On Thu, Jan 18, 2024 at 3:11 AM Barry Song <21cnbao@xxxxxxxxx> wrote: > > From: Chuanhua Han <hanchuanhua@xxxxxxxx> > > should_try_to_free_swap() works with an assumption that swap-in is always done > at normal page granularity, aka, folio_nr_pages = 1. To support large folio > swap-in, this patch removes the assumption. > > Signed-off-by: Chuanhua Han <hanchuanhua@xxxxxxxx> > Co-developed-by: Barry Song <v-songbaohua@xxxxxxxx> > Signed-off-by: Barry Song <v-songbaohua@xxxxxxxx> > --- > mm/memory.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/mm/memory.c b/mm/memory.c > index 7e1f4849463a..f61a48929ba7 100644 > --- a/mm/memory.c > +++ b/mm/memory.c > @@ -3714,7 +3714,7 @@ static inline bool should_try_to_free_swap(struct folio *folio, > * reference only in case it's likely that we'll be the exlusive user. > */ > return (fault_flags & FAULT_FLAG_WRITE) && !folio_test_ksm(folio) && > - folio_ref_count(folio) == 2; > + folio_ref_count(folio) == (1 + folio_nr_pages(folio)); > } > > static vm_fault_t pte_marker_clear(struct vm_fault *vmf) > -- > 2.34.1 > >
