From: Liam R. Howlett <Liam.Howlett@Oracle.com>
Date: Mon, 4 Jan 2021 19:53:01 +0000 (-0500)
Subject: kernel/events/uprobes: Use maple tree iterators instead of linked list
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=8891f357a3971c9d11ccaf0ab66d26bce45f688d;p=users%2Fjedix%2Flinux-maple.git

kernel/events/uprobes: Use maple tree iterators instead of linked list

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---

diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index bf9edd8d75be..24cfa05e42ae 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -356,8 +356,9 @@ static struct vm_area_struct *
 find_ref_ctr_vma(struct uprobe *uprobe, struct mm_struct *mm)
 {
 	struct vm_area_struct *tmp;
+	MA_STATE(mas, &mm->mm_mt, 0, 0);
 
-	for (tmp = mm->mmap; tmp; tmp = tmp->vm_next)
+	mas_for_each(&mas, tmp, ULONG_MAX)
 		if (valid_ref_ctr_vma(uprobe, tmp))
 			return tmp;
 
@@ -1239,9 +1240,10 @@ static int unapply_uprobe(struct uprobe *uprobe, struct mm_struct *mm)
 {
 	struct vm_area_struct *vma;
 	int err = 0;
+	MA_STATE(mas, &mm->mm_mt, 0, 0);
 
 	mmap_read_lock(mm);
-	for (vma = mm->mmap; vma; vma = vma->vm_next) {
+	mas_for_each(&mas, vma, ULONG_MAX) {
 		unsigned long vaddr;
 		loff_t offset;
 
@@ -1990,8 +1992,9 @@ bool uprobe_deny_signal(void)
 static void mmf_recalc_uprobes(struct mm_struct *mm)
 {
 	struct vm_area_struct *vma;
+	MA_STATE(mas, &mm->mm_mt, 0, 0);
 
-	for (vma = mm->mmap; vma; vma = vma->vm_next) {
+	mas_for_each(&mas, vma, ULONG_MAX) {
 		if (!valid_vma(vma, false))
 			continue;
 		/*