From: Liam R. Howlett <Liam.Howlett@Oracle.com>
Date: Mon, 4 Jan 2021 19:52:15 +0000 (-0500)
Subject: kernel/acct: Use maple tree iterators instead of linked list
X-Git-Tag: howlett/maple_spf/20210129~23
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=cd13a903c19e911ec38e2aca8e45d112f532056b;p=users%2Fjedix%2Flinux-maple.git

kernel/acct: Use maple tree iterators instead of linked list

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

diff --git a/kernel/acct.c b/kernel/acct.c
index a64102be2bb0..fcd833aee754 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -534,16 +534,14 @@ void acct_collect(long exitcode, int group_dead)
 	struct pacct_struct *pacct = &current->signal->pacct;
 	u64 utime, stime;
 	unsigned long vsize = 0;
+	MA_STATE(mas, &current->mm->mm_mt, 0, 0);
 
 	if (group_dead && current->mm) {
 		struct vm_area_struct *vma;
 
 		mmap_read_lock(current->mm);
-		vma = current->mm->mmap;
-		while (vma) {
+		mas_for_each(&mas, vma, -1)
 			vsize += vma->vm_end - vma->vm_start;
-			vma = vma->vm_next;
-		}
 		mmap_read_unlock(current->mm);
 	}