linux-kernel - [PATCH v2 51/70] kernel/sys: Use maple tree iterators instead of linked list

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Date:   Tue, 12 Jan 2021 11:12:21 -0500
From:   "Liam R. Howlett" <Liam.Howlett@...cle.com>
To:     maple-tree@...ts.infradead.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Cc:     Andrew Morton <akpm@...gle.com>, Song Liu <songliubraving@...com>,
        Davidlohr Bueso <dave@...olabs.net>,
        "Paul E . McKenney" <paulmck@...nel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Jerome Glisse <jglisse@...hat.com>,
        David Rientjes <rientjes@...gle.com>,
        Axel Rasmussen <axelrasmussen@...gle.com>,
        Suren Baghdasaryan <surenb@...gle.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Rik van Riel <riel@...riel.com>,
        Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH v2 51/70] kernel/sys: Use maple tree iterators instead of linked list

Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
---
 kernel/sys.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/sys.c b/kernel/sys.c
index a730c03ee607c..fe061c54a5a46 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1858,9 +1858,10 @@ static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd)
 	err = -EBUSY;
 	if (exe_file) {
 		struct vm_area_struct *vma;
+		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) {
 			if (!vma->vm_file)
 				continue;
 			if (path_equal(&vma->vm_file->f_path,
-- 
2.28.0