diff options
| author | Wei Yang <richard.weiyang@gmail.com> | 2024-10-31 23:16:25 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-11-11 13:09:42 -0800 |
| commit | 8c836f1712d750163fb00b6cc3a730149c215979 (patch) | |
| tree | 79f78bc782fc8732fa5c7ff0c9f9977987774a39 /lib | |
| parent | cefbcf206f6d92dc0076e3fda06e2b9331b77868 (diff) | |
maple_tree: not necessary to check index/last again
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>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/maple_tree.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/maple_tree.c b/lib/maple_tree.c index 071d3055f1fa..4900f182e99d 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -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); |