From: "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx> commit 9a40d45c1f2c49273c04938ec3d7849f685eb3c1 upstream. Now that the status of the maple state is outside of the node, the mas_searchable() function can be dropped for easier open-coding of what is going on. Link: https://lkml.kernel.org/r/20231101171629.3612299-10-Liam.Howlett@xxxxxxxxxx Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx> Cc: Peng Zhang <zhangpeng.00@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx> --- lib/maple_tree.c | 66 ++++++++------------------------ tools/testing/radix-tree/maple.c | 4 +- 2 files changed, 19 insertions(+), 51 deletions(-) diff --git a/lib/maple_tree.c b/lib/maple_tree.c index f7a1c1cc18eb..f73e3772c883 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -285,17 +285,6 @@ static inline bool mas_is_underflow(struct ma_state *mas) return mas->status == ma_underflow; } -static inline bool mas_searchable(struct ma_state *mas) -{ - if (mas_is_none(mas)) - return false; - - if (mas_is_ptr(mas)) - return false; - - return true; -} - static __always_inline struct maple_node *mte_to_node( const struct maple_enode *entry) { @@ -6041,12 +6030,11 @@ static __always_inline bool mas_find_setup(struct ma_state *mas, unsigned long m } - if (unlikely(!mas_searchable(mas))) { - if (unlikely(mas_is_ptr(mas))) - goto ptr_out_of_range; + if (unlikely(mas_is_ptr(mas))) + goto ptr_out_of_range; + if (unlikely(mas_is_none(mas))) return true; - } if (mas->index == max) return true; @@ -6173,20 +6161,18 @@ static bool mas_find_rev_setup(struct ma_state *mas, unsigned long min, return true; } - if (unlikely(!mas_searchable(mas))) { - if (mas_is_ptr(mas)) - goto none; + if (unlikely(mas_is_ptr(mas))) + goto none; - if (mas_is_none(mas)) { - /* - * Walked to the location, and there was nothing so the - * previous location is 0. - */ - mas->last = mas->index = 0; - mas->status = ma_root; - *entry = mas_root(mas); - return true; - } + if (unlikely(mas_is_none(mas))) { + /* + * Walked to the location, and there was nothing so the previous + * location is 0. + */ + mas->last = mas->index = 0; + mas->status = ma_root; + *entry = mas_root(mas); + return true; } active: @@ -6916,7 +6902,7 @@ void *mt_find(struct maple_tree *mt, unsigned long *index, unsigned long max) if (entry) goto unlock; - while (mas_searchable(&mas) && (mas.last < max)) { + while (mas_is_active(&mas) && (mas.last < max)) { entry = mas_next_entry(&mas, max); if (likely(entry && !xa_is_zero(entry))) break; @@ -6998,26 +6984,6 @@ unsigned int mt_nr_allocated(void) return kmem_cache_nr_allocated(maple_node_cache); } -/* - * mas_dead_node() - Check if the maple state is pointing to a dead node. - * @mas: The maple state - * @index: The index to restore in @mas. - * - * Used in test code. - * Return: 1 if @mas has been reset to MAS_START, 0 otherwise. - */ -static inline int mas_dead_node(struct ma_state *mas, unsigned long index) -{ - if (unlikely(!mas_searchable(mas) || mas_is_start(mas))) - return 0; - - if (likely(!mte_dead_node(mas->node))) - return 0; - - mas_rewalk(mas, index); - return 1; -} - void mt_cache_shrink(void) { } @@ -7569,7 +7535,7 @@ void mt_validate(struct maple_tree *mt) MA_STATE(mas, mt, 0, 0); rcu_read_lock(); mas_start(&mas); - if (!mas_searchable(&mas)) + if (!mas_is_active(&mas)) goto done; while (!mte_is_leaf(mas.node)) diff --git a/tools/testing/radix-tree/maple.c b/tools/testing/radix-tree/maple.c index d630e86052f9..35cc8c2a10f4 100644 --- a/tools/testing/radix-tree/maple.c +++ b/tools/testing/radix-tree/maple.c @@ -974,8 +974,10 @@ static inline void *mas_range_load(struct ma_state *mas, if (likely(mas->offset != MAPLE_NODE_SLOTS)) entry = mas_get_slot(mas, mas->offset); - if (mas_dead_node(mas, index)) + if (mas_is_active(mas) && mte_dead_node(mas->node)) { + mas_set(mas, index); goto retry; + } return entry; } -- 2.39.2
