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maple_tree: use ma_dead_node() in mte_dead_node()

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Utilize ma_dead_node() in mte_dead_node().  It can prevent decoding the
maple enode for a second time.  Use the "node" to find parent for
comparison.

Link: https://lkml.kernel.org/r/20250211071850.330632-1-richard120310@gmail.com
Signed-off-by: I Hsin Cheng <richard120310@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw>
Cc: Shuah khan <skhan@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
I Hsin Cheng 2025-02-11 15:18:50 +08:00 committed by Andrew Morton
parent 4bc2e699e3
commit 6fbea85271
1 changed files with 2 additions and 5 deletions
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7
lib/maple_tree.c
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@ -584,13 +584,10 @@ static __always_inline bool ma_dead_node(const struct maple_node *node)
*/
static __always_inline bool mte_dead_node(const struct maple_enode *enode)
{
struct maple_node *parent, *node;
struct maple_node *node;
node = mte_to_node(enode);
/* Do not reorder reads from the node prior to the parent check */
smp_rmb();
parent = mte_parent(enode);
return (parent == node);
return ma_dead_node(node);
}
/*