[PATCH v12 63/69] mm/swapfile: use vma iterator instead of vma linked list

Liam Howlett liam.howlett at oracle.com
Tue Jul 19 19:18:03 PDT 2022

From: "Liam R. Howlett" <Liam.Howlett at Oracle.com>

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

Link: https://lkml.kernel.org/r/20220504011345.662299-48-Liam.Howlett@oracle.com
Link: https://lkml.kernel.org/r/20220621204632.3370049-64-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett at Oracle.com>
Acked-by: Vlastimil Babka <vbabka at suse.cz>
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: David Howells <dhowells at redhat.com>
Cc: "Matthew Wilcox (Oracle)" <willy at infradead.org>
Cc: SeongJae Park <sj at kernel.org>
Cc: Will Deacon <will at kernel.org>
Cc: Davidlohr Bueso <dave at stgolabs.net>
Signed-off-by: Andrew Morton <akpm at linux-foundation.org>
 mm/swapfile.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mm/swapfile.c b/mm/swapfile.c
index a2e66d855b19..ec4c1b276691 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1991,14 +1991,16 @@ static int unuse_mm(struct mm_struct *mm, unsigned int type)
 	struct vm_area_struct *vma;
 	int ret = 0;
+	VMA_ITERATOR(vmi, mm, 0);
-	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)

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