linux-kernel - [PATCH 6.6 20/28] lib/maple_tree.c: fix build error due to hotfix alteration

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Message-Id: <20241024132225.2271667-5-yukuai1@huaweicloud.com>
Date: Thu, 24 Oct 2024 21:22:17 +0800
From: Yu Kuai <yukuai1@...weicloud.com>
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Subject: [PATCH 6.6 20/28] lib/maple_tree.c: fix build error due to hotfix alteration

From: Andrew Morton <akpm@...ux-foundation.org>

commit 5143eecd2af2b5424f7b96d53f17bb4718e46bd3 upstream.

Commit 0de56e38b307 ("maple_tree: use maple state end for write
operations") was broken by a later patch "maple_tree: do not preallocate
nodes for slot stores".  But the later patch was scheduled ahead of
0de56e38b307, for 6.7-rc.

This fixlet undoes the damage.

Fixes: 0de56e38b307 ("maple_tree: use maple state end for write operations")
Cc: Liam R. Howlett <Liam.Howlett@...cle.com>
Cc: Sidhartha Kumar <sidhartha.kumar@...cle.com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Yu Kuai <yukuai3@...wei.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 d90f4b7e7511..905fa1143f8d 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -5524,7 +5524,7 @@ int mas_preallocate(struct ma_state *mas, void *entry, gfp_t gfp)
 	node_size = mas_wr_new_end(&wr_mas);
 
 	/* Slot store, does not require additional nodes */
-	if (node_size == wr_mas.node_end) {
+	if (node_size == mas->end) {
 		/* reuse node */
 		if (!mt_in_rcu(mas->tree))
 			return 0;
-- 
2.39.2