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maple_tree: not necessary to check index/last again

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Before calling mas_new_root(), the range has been checked.

Link: https://lkml.kernel.org/r/20241031231627.14316-4-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Cc: Liam R. Howlett <Liam.Howlett@Oracle.com>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Wei Yang 2024-10-31 23:16:25 +00:00 committed by Andrew Morton
parent cefbcf206f
commit 8c836f1712
1 changed files with 3 additions and 1 deletions
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4
lib/maple_tree.c
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@ -3670,7 +3670,9 @@ static inline void mas_new_root(struct ma_state *mas, void *entry)
void __rcu **slots;
unsigned long *pivots;
if (!entry && !mas->index && mas->last == ULONG_MAX) {
WARN_ON_ONCE(mas->index || mas->last != ULONG_MAX);
if (!entry) {
mas->depth = 0;
mas_set_height(mas);
rcu_assign_pointer(mas->tree->ma_root, entry);