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From:   Liam Howlett <liam.howlett@oracle.com>
To:     "maple-tree@lists.infradead.org" <maple-tree@lists.infradead.org>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>,
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        Davidlohr Bueso <dave@stgolabs.net>,
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        Rik van Riel <riel@surriel.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Michel Lespinasse <walken.cr@gmail.com>,
        Liam Howlett <liam.howlett@oracle.com>
Subject: [PATCH 70/94] kernel/events/core: Use maple tree iterators instead of
 linked list
Thread-Topic: [PATCH 70/94] kernel/events/core: Use maple tree iterators
 instead of linked list
Thread-Index: AQHXPEQ9ib8rc318+UOGu3FUsWsgCA==
Date:   Wed, 28 Apr 2021 15:36:22 +0000
Message-ID: <20210428153542.2814175-71-Liam.Howlett@Oracle.com>
References: <20210428153542.2814175-1-Liam.Howlett@Oracle.com>
In-Reply-To: <20210428153542.2814175-1-Liam.Howlett@Oracle.com>
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Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---
 kernel/events/core.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index f07943183041..73817c6c921e 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -10041,14 +10041,17 @@ static void perf_addr_filter_apply(struct perf_ad=
dr_filter *filter,
 				   struct perf_addr_filter_range *fr)
 {
 	struct vm_area_struct *vma;
+	MA_STATE(mas, &mm->mm_mt, 0, 0);
=20
-	for (vma =3D mm->mmap; vma; vma =3D vma->vm_next) {
+	rcu_read_lock();
+	mas_for_each(&mas, vma, ULONG_MAX) {
 		if (!vma->vm_file)
 			continue;
=20
 		if (perf_addr_filter_vma_adjust(filter, vma, fr))
-			return;
+			break;
 	}
+	rcu_read_unlock();
 }
=20
 /*
--=20
2.30.2