From: Wei Yang <richard.weiyang@gmail.com>
To: Liam.Howlett@oracle.com
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Wei Yang <richard.weiyang@gmail.com>,
"Liam R . Howlett" <Liam.Howlett@Oracle.com>
Subject: [PATCH] maple_tree: not necessary to filter MAPLE_PARENT_ROOT since it is not a root
Date: Sun, 13 Nov 2022 00:56:18 +0000 [thread overview]
Message-ID: <20221113005618.29679-1-richard.weiyang@gmail.com> (raw)
Root node is return at the beginning, so we are sure bit 0 is not set.
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
CC: 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 9aad98c24f3e..f8c4755e7c75 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -436,7 +436,7 @@ enum maple_type mte_parent_enum(struct maple_enode *p_enode,
return 0; /* Validated in the caller. */
p_type &= MAPLE_NODE_MASK;
- p_type = p_type & ~(MAPLE_PARENT_ROOT | mte_parent_slot_mask(p_type));
+ p_type = p_type & ~mte_parent_slot_mask(p_type);
switch (p_type) {
case MAPLE_PARENT_RANGE64: /* or MAPLE_PARENT_ARANGE64 */
--
2.33.1
next reply other threads:[~2022-11-13 0:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-13 0:56 Wei Yang [this message]
2022-11-15 14:31 ` Liam Howlett
2022-11-15 14:56 ` Liam Howlett
2022-11-17 3:45 ` Wei Yang
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