SWP_FS_OPS
sis->flags |= SWP_FS_OPS;
sis->flags |= SWP_FS_OPS;
if (data_race(sis->flags & SWP_FS_OPS))
if (data_race(sis->flags & SWP_FS_OPS)) {
if ((sis->flags & SWP_FS_OPS) &&
return !data_race(folio_swap_flags(folio) & SWP_FS_OPS);