[61/94] drivers/tee/optee: Use maple tree iterators for __check_mem_type()
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Message ID 20210428153542.2814175-62-Liam.Howlett@Oracle.com
State New, archived
Headers show
Series
  • Introducing the Maple Tree
Related show

Commit Message

Liam Howlett April 28, 2021, 3:36 p.m. UTC
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---
 drivers/tee/optee/call.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

Patch
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diff --git a/drivers/tee/optee/call.c b/drivers/tee/optee/call.c
index 6132cc8d014c..cfe55b9e92b6 100644
--- a/drivers/tee/optee/call.c
+++ b/drivers/tee/optee/call.c
@@ -550,11 +550,18 @@  static bool is_normal_memory(pgprot_t p)
 
 static int __check_mem_type(struct vm_area_struct *vma, unsigned long end)
 {
-	while (vma && is_normal_memory(vma->vm_page_prot)) {
-		if (vma->vm_end >= end)
-			return 0;
-		vma = vma->vm_next;
+	MA_STATE(mas, &vma->vm_mm->mm_mt, vma->vm_start, vma->vm_start);
+
+
+	rcu_read_lock();
+	mas_for_each(&mas, vma, end) {
+		if (!is_normal_memory(vma->vm_page_prot))
+		    break;
 	}
+	rcu_read_unlock();
+
+	if (!vma)
+		return 0;
 
 	return -EINVAL;
 }