linux-kernel - [PATCH 01/12] maple_tree: Fix check_bulk

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Message-Id: <20250901-maple-sheaves-v1-1-d6a1166b53f2@suse.cz>
Date: Mon, 01 Sep 2025 13:08:51 +0200
From: Vlastimil Babka <vbabka@...e.cz>
To: "Liam R. Howlett" <Liam.Howlett@...cle.com>, 
 Matthew Wilcox <willy@...radead.org>, 
 Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, Jann Horn <jannh@...gle.com>, 
 Pedro Falcato <pfalcato@...e.de>, Suren Baghdasaryan <surenb@...gle.com>
Cc: Harry Yoo <harry.yoo@...cle.com>, 
 Andrew Morton <akpm@...ux-foundation.org>, maple-tree@...ts.infradead.org, 
 linux-mm@...ck.org, linux-fsdevel@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Vlastimil Babka <vbabka@...e.cz>
Subject: [PATCH 01/12] maple_tree: Fix check_bulk_rebalance() test locks

From: "Liam R. Howlett" <Liam.Howlett@...cle.com>

The check_bulk_rebalance() test was not correctly locking the tree which
caused issues with the sheaves testing in later patches.  Adding the
missing locks fixed the issue.

Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
Signed-off-by: Vlastimil Babka <vbabka@...e.cz>
---
 tools/testing/radix-tree/maple.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/radix-tree/maple.c b/tools/testing/radix-tree/maple.c
index 172700fb7784d29f9403003b4484a5ebd7aa316b..159d5307b30a4b37e6cf2941848b8718e1b891d9 100644
--- a/tools/testing/radix-tree/maple.c
+++ b/tools/testing/radix-tree/maple.c
@@ -36465,6 +36465,7 @@ static inline void check_bulk_rebalance(struct maple_tree *mt)

 	build_full_tree(mt, 0, 2);

+	mas_lock(&mas);
 	/* erase every entry in the tree */
 	do {
 		/* set up bulk store mode */
@@ -36474,6 +36475,7 @@ static inline void check_bulk_rebalance(struct maple_tree *mt)
 	} while (mas_prev(&mas, 0) != NULL);

 	mas_destroy(&mas);
+	mas_unlock(&mas);
 }

 void farmer_tests(void)

-- 
2.51.0