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Link: https://lkml.kernel.org/r/20220504011345.662299-20-Liam.Howlett@oracl= e.com Link: https://lkml.kernel.org/r/20220621204632.3370049-36-Liam.Howlett@orac= le.com Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Liam R. Howlett Acked-by: Vlastimil Babka Cc: Catalin Marinas Cc: David Howells Cc: SeongJae Park Cc: Will Deacon Cc: Davidlohr Bueso Signed-off-by: Andrew Morton --- arch/x86/entry/vdso/vma.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c index 1000d457c332..6292b960037b 100644 --- a/arch/x86/entry/vdso/vma.c +++ b/arch/x86/entry/vdso/vma.c @@ -127,17 +127,17 @@ int vdso_join_timens(struct task_struct *task, struct= time_namespace *ns) { struct mm_struct *mm =3D task->mm; struct vm_area_struct *vma; + VMA_ITERATOR(vmi, mm, 0); =20 mmap_read_lock(mm); - - for (vma =3D mm->mmap; vma; vma =3D vma->vm_next) { + for_each_vma(vmi, vma) { unsigned long size =3D vma->vm_end - vma->vm_start; =20 if (vma_is_special_mapping(vma, &vvar_mapping)) zap_page_range(vma, vma->vm_start, size); } - mmap_read_unlock(mm); + return 0; } #else @@ -354,6 +354,7 @@ int map_vdso_once(const struct vdso_image *image, unsig= ned long addr) { struct mm_struct *mm =3D current->mm; struct vm_area_struct *vma; + VMA_ITERATOR(vmi, mm, 0); =20 mmap_write_lock(mm); /* @@ -363,7 +364,7 @@ int map_vdso_once(const struct vdso_image *image, unsig= ned long addr) * We could search vma near context.vdso, but it's a slowpath, * so let's explicitly check all VMAs to be completely sure. */ - for (vma =3D mm->mmap; vma; vma =3D vma->vm_next) { + for_each_vma(vmi, vma) { if (vma_is_special_mapping(vma, &vdso_mapping) || vma_is_special_mapping(vma, &vvar_mapping)) { mmap_write_unlock(mm); --=20 2.35.1