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McKenney" , Matthew Wilcox , Laurent Dufour , David Rientjes , Axel Rasmussen , Suren Baghdasaryan , Vlastimil Babka , Rik van Riel , Peter Zijlstra , Michel Lespinasse , Liam Howlett Subject: [PATCH 53/94] arch/arm64: Remove mmap linked list from vdso. Thread-Topic: [PATCH 53/94] arch/arm64: Remove mmap linked list from vdso. 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Howlett --- arch/arm64/kernel/vdso.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c index a61fc4f989b3..57ea81fbe04b 100644 --- a/arch/arm64/kernel/vdso.c +++ b/arch/arm64/kernel/vdso.c @@ -136,10 +136,12 @@ int vdso_join_timens(struct task_struct *task, struct= time_namespace *ns) { struct mm_struct *mm =3D task->mm; struct vm_area_struct *vma; + MA_STATE(mas, &mm->mm_mt, 0, 0); =20 mmap_read_lock(mm); =20 - for (vma =3D mm->mmap; vma; vma =3D vma->vm_next) { + rcu_read_lock(); + mas_for_each(&mas, vma, ULONG_MAX) { unsigned long size =3D vma->vm_end - vma->vm_start; =20 if (vma_is_special_mapping(vma, vdso_info[VDSO_ABI_AA64].dm)) @@ -149,6 +151,7 @@ int vdso_join_timens(struct task_struct *task, struct t= ime_namespace *ns) zap_page_range(vma, vma->vm_start, size); #endif } + rcu_read_unlock(); =20 mmap_read_unlock(mm); return 0; --=20 2.30.2