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> > + if (unlikely(vma->vm_flags & VM_PFNMAP)) { > + err = track_pfn_split(vma, addr); > + if (err) > + goto out_vma_unlink; > + } > + > if (new->vm_file) > get_file(new->vm_file); > > @@ -2515,6 +2521,8 @@ static int __split_vma(struct vma_iterator *vmi, struct vm_area_struct *vma, > vma_next(vmi); > return 0; > > +out_vma_unlink: > + unlink_anon_vmas(vma); > out_free_mpol: > mpol_put(vma_policy(new)); > out_free_vmi: > -- > 2.39.2 > Right from the start the 6.11rc cycle mm-unstable and therefore -next has moved this function out to mm/vma.c, so you will need to make this change there rather than against mm/mmap.c (or whichever tree this is intended to come through needs to sync up, especially as there's a fairly substantial amount of change going on right now in VMA handling). Sorry about that!