From 3825e4495bccba46ec447d8444456d1fe5824580 Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Tue, 11 Apr 2023 11:10:49 -0400 Subject: maple_tree: refine ma_state init from mas_start() commit 46b345848261009477552d654cb2f65000c30e4d upstream. If mas->node is an MAS_START, there are three cases, and they all assign different values to mas->node and mas->offset. So there is no need to set them to a default value before updating. Update them directly to make them easier to understand and for better readability. Link: https://lkml.kernel.org/r/20221221060058.609003-7-vernon2gm@gmail.com Cc: Fixes: 54a611b60590 ("Maple Tree: add new data structure") Signed-off-by: Vernon Yang Signed-off-by: Liam R. Howlett Signed-off-by: Greg Kroah-Hartman --- lib/maple_tree.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'lib') diff --git a/lib/maple_tree.c b/lib/maple_tree.c index e89af2220a28..54484bd756e5 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -1334,7 +1334,7 @@ static void mas_node_count(struct ma_state *mas, int count) * mas_start() - Sets up maple state for operations. * @mas: The maple state. * - * If mas->node == MAS_START, then set the min, max, depth, and offset to + * If mas->node == MAS_START, then set the min, max and depth to * defaults. * * Return: @@ -1348,22 +1348,22 @@ static inline struct maple_enode *mas_start(struct ma_state *mas) if (likely(mas_is_start(mas))) { struct maple_enode *root; - mas->node = MAS_NONE; mas->min = 0; mas->max = ULONG_MAX; mas->depth = 0; - mas->offset = 0; root = mas_root(mas); /* Tree with nodes */ if (likely(xa_is_node(root))) { mas->depth = 1; mas->node = mte_safe_root(root); + mas->offset = 0; return NULL; } /* empty tree */ if (unlikely(!root)) { + mas->node = MAS_NONE; mas->offset = MAPLE_NODE_SLOTS; return NULL; } -- cgit v1.2.3