From: Liam R. Howlett <Liam.Howlett@Oracle.com>
Date: Wed, 20 Jul 2022 02:18:03 +0000 (+0000)
Subject: mm/swapfile: use vma iterator instead of vma linked list
X-Git-Tag: howlett/maple/20220906~7
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=f83bdde6b1c2ca9f03c34b9bd3e07f96579befa1;p=users%2Fjedix%2Flinux-maple.git

mm/swapfile: use vma iterator instead of vma linked list

unuse_mm() no longer needs to reference the linked list.

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
---

diff --git a/mm/swapfile.c b/mm/swapfile.c
index 263b19e693cf..469d9af86be2 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1994,14 +1994,16 @@ static int unuse_mm(struct mm_struct *mm, unsigned int type)
 {
 	struct vm_area_struct *vma;
 	int ret = 0;
+	VMA_ITERATOR(vmi, mm, 0);
 
 	mmap_read_lock(mm);
-	for (vma = mm->mmap; vma; vma = vma->vm_next) {
+	for_each_vma(vmi, vma) {
 		if (vma->anon_vma) {
 			ret = unuse_vma(vma, type);
 			if (ret)
 				break;
 		}
+
 		cond_resched();
 	}
 	mmap_read_unlock(mm);