From: "Liam R. Howlett" <Liam.Howlett@oracle.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: maple-tree@lists.infradead.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org,
"Liam R. Howlett" <Liam.Howlett@oracle.com>
Subject: [PATCH 02/12] maple_tree: Make mas_erase() more robust
Date: Wed, 1 Nov 2023 13:16:19 -0400 [thread overview]
Message-ID: <20231101171629.3612299-3-Liam.Howlett@oracle.com> (raw)
In-Reply-To: <20231101171629.3612299-1-Liam.Howlett@oracle.com>
mas_erase() may not deal correctly with all maple states. Make the
function more robust by ensuring the state is in one of the two
acceptable states.
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
---
lib/maple_tree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 0fcbfa7e9942..b6b2d7031cae 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -6161,7 +6161,7 @@ void *mas_erase(struct ma_state *mas)
void *entry;
MA_WR_STATE(wr_mas, mas, NULL);
- if (mas_is_none(mas) || mas_is_paused(mas))
+ if (!mas_is_active(mas) || !mas_is_start(mas))
mas->node = MAS_START;
/* Retry unnecessary when holding the write lock. */
--
2.40.1
next prev parent reply other threads:[~2023-11-01 17:16 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-01 17:16 [PATCH 00/12] maple_tree: iterator state changes Liam R. Howlett
2023-11-01 17:16 ` [PATCH 01/12] maple_tree: Remove unnecessary default labels from switch statements Liam R. Howlett
2023-11-01 17:16 ` Liam R. Howlett [this message]
2023-11-01 17:16 ` [PATCH 03/12] maple_tree: Move debug check to __mas_set_range() Liam R. Howlett
2023-11-01 17:16 ` [PATCH 04/12] maple_tree: Add end of node tracking to the maple state Liam R. Howlett
2023-11-01 17:16 ` [PATCH 05/12] maple_tree: Use cached node end in mas_next() Liam R. Howlett
2023-11-01 17:16 ` [PATCH 06/12] maple_tree: Use cached node end in mas_destroy() Liam R. Howlett
2023-11-01 17:16 ` [PATCH 07/12] maple_tree: Clean up inlines for some functions Liam R. Howlett
2023-11-01 17:16 ` [PATCH 08/12] maple_tree: Separate ma_state node from status Liam R. Howlett
2023-11-02 8:42 ` kernel test robot
2023-11-02 17:39 ` Liam R. Howlett
2023-11-06 15:41 ` [PATCH] maple_tree: Fix comments about MAS_* Liam R. Howlett
2023-11-06 15:45 ` [PATCH] maple_tree: Update forking to separate maple state and node Liam R. Howlett
2025-04-03 0:33 ` [PATCH] test suite: Use %zu to print size_t Liam R. Howlett
2025-04-03 2:53 ` Liam R. Howlett
2023-11-01 17:16 ` [PATCH 09/12] maple_tree: Remove mas_searchable() Liam R. Howlett
2023-11-01 17:16 ` [PATCH 10/12] maple_tree: Use maple state end for write operations Liam R. Howlett
2023-11-01 17:16 ` [PATCH 11/12] maple_tree: Don't find node end in mtree_lookup_walk() Liam R. Howlett
2023-11-01 17:16 ` [PATCH 12/12] maple_tree: mtree_range_walk() clean up Liam R. Howlett
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