[PATCH v2 24/61] arch/arm64: Remove mmap linked list from vdso.
From: Liam Howlett <hidden>
Date: 2021-08-17 15:55:45
Also in:
lkml
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
From: "Liam R. Howlett" <redacted> Start using the maple tree Signed-off-by: Liam R. Howlett <redacted> --- 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 = 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;
--
2.30.2