From 36c3a2c6043d270885d50d8f9f7a9adc9e6dcc39 Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Mon, 4 Jan 2021 14:24:40 -0500 Subject: [PATCH] arch/arm64: Remove mmap linked list from vdso. Start using the maple tree Signed-off-by: Liam R. 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 cee5d04ea9ad..aac356c3bba8 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 = task->mm; struct vm_area_struct *vma; + MA_STATE(mas, &mm->mm_mt, 0, 0); mmap_read_lock(mm); - for (vma = mm->mmap; vma; vma = vma->vm_next) { + rcu_read_lock(); + mas_for_each(&mas, vma, ULONG_MAX) { unsigned long size = vma->vm_end - vma->vm_start; 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 time_namespace *ns) zap_page_range(vma, vma->vm_start, size); #endif } + rcu_read_unlock(); mmap_read_unlock(mm); return 0; -- 2.50.1