On Mon, Oct 12, 2026 at 08:49:11PM +0200, David Hildenbrand (Arm) wrote: > On 10/9/26 20:04, Lorenzo Stoakes (ARM) wrote:
> > diff --git a/mm/ksm.c b/mm/ksm.c > > index 624f37975e12..ed66a90e0031 100644 > > --- a/mm/ksm.c > > +++ b/mm/ksm.c > > @@ -747,9 +747,7 @@ static bool ksm_compatible(const struct file *file, > > vma_flags_t vma_flags) > > if (vma_flags_test_any(&vma_flags, VMA_SHARED_BIT, VMA_MAYSHARE_BIT, > > VMA_HUGETLB_BIT)) > > return false; > > - if (vma_flags_test_single_mask(&vma_flags, VMA_DROPPABLE)) > > - return false; > > - if (vma_flags_test_any_mask(&vma_flags, VMA_SPECIAL_FLAGS)) > > + if (!vma_flags_is_mm_backed(&vma_flags)) > > return false; > > Same here, it's hard for me to tell my brain that "permanently lazyfree pages > are not backed by core-mm". Yeah :) 'mm backed' is definitely too broad for this. Will reinstate the explicit droppable check in v6. > > Acked-by: David Hildenbrand (Arm) <[email protected]> Thanks! -- Cheers, Lorenzo
