Having the ma_external_lock field exist when CONFIG_LOCKDEP=n isn't used anywhere, so just get rid of it. This also avoids generating a typedef called lockdep_map_p that could overlap with typedefs in other header files. Reviewed-by: Danilo Krummrich Signed-off-by: Alice Ryhl --- Originally sent as https://lore.kernel.org/all/20250819-maple-tree-v2-1-229b48657bab@google.com/ But I'm moving it out of that series as it did not have the intended effect on the Rust bindgen output. However, I still think it makes sense as a pure cleanup patch. --- include/linux/maple_tree.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/include/linux/maple_tree.h b/include/linux/maple_tree.h index bafe143b1f783202e27b32567fffee4149e8e266..8244679ba1758235e049acbaedee62aae5c0e226 100644 --- a/include/linux/maple_tree.h +++ b/include/linux/maple_tree.h @@ -194,7 +194,6 @@ enum store_type { #define MAPLE_RESERVED_RANGE 4096 #ifdef CONFIG_LOCKDEP -typedef struct lockdep_map *lockdep_map_p; #define mt_lock_is_held(mt) \ (!(mt)->ma_external_lock || lock_is_held((mt)->ma_external_lock)) @@ -207,7 +206,6 @@ typedef struct lockdep_map *lockdep_map_p; #define mt_on_stack(mt) (mt).ma_external_lock = NULL #else -typedef struct { /* nothing */ } lockdep_map_p; #define mt_lock_is_held(mt) 1 #define mt_write_lock_is_held(mt) 1 #define mt_set_external_lock(mt, lock) do { } while (0) @@ -230,8 +228,10 @@ typedef struct { /* nothing */ } lockdep_map_p; */ struct maple_tree { union { - spinlock_t ma_lock; - lockdep_map_p ma_external_lock; + spinlock_t ma_lock; +#ifdef CONFIG_LOCKDEP + struct lockdep_map *ma_external_lock; +#endif }; unsigned int ma_flags; void __rcu *ma_root; --- base-commit: 1b237f190eb3d36f52dffe07a40b5eb210280e00 change-id: 20250902-maple-lockdep-p-a930e865c76b Best regards, -- Alice Ryhl