summaryrefslogtreecommitdiff
path: root/lib
diff options
context:
space:
mode:
authorLiam R. Howlett <Liam.Howlett@oracle.com>2023-08-04 19:59:49 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-08-21 23:37:41 +0300
commit4ffc2ee2cf01f3d03977fbeb1b43da2dc22a95f4 (patch)
tree2378ea03cdc43ea87bc61025681fa56121f89af4 /lib
parent1238f6a226dc27ec34d229b71b02f0d6c46bbf11 (diff)
downloadlinux-4ffc2ee2cf01f3d03977fbeb1b43da2dc22a95f4.tar.xz
maple_tree: introduce mas_tree_parent() definition
Add a definition to shorten long code lines and clarify what the code is doing. Use the new definition to get the maple tree parent pointer from the maple state where possible. Link: https://lkml.kernel.org/r/20230804165951.2661157-5-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/maple_tree.c13
1 files changed, 5 insertions, 8 deletions
diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index c01b1be1480c..cf41e0dbb87b 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -75,6 +75,7 @@
#define MA_STATE_PREALLOC 4
#define ma_parent_ptr(x) ((struct maple_pnode *)(x))
+#define mas_tree_parent(x) ((unsigned long)(x->tree) | MA_ROOT_PARENT)
#define ma_mnode_ptr(x) ((struct maple_node *)(x))
#define ma_enode_ptr(x) ((struct maple_enode *)(x))
static struct kmem_cache *maple_node_cache;
@@ -1728,8 +1729,7 @@ static inline void mas_put_in_tree(struct ma_state *mas,
void __rcu **slots;
if (mte_is_root(mas->node)) {
- mas_mn(mas)->parent = ma_parent_ptr(
- ((unsigned long)mas->tree | MA_ROOT_PARENT));
+ mas_mn(mas)->parent = ma_parent_ptr(mas_tree_parent(mas));
rcu_assign_pointer(mas->tree->ma_root, mte_mk_root(mas->node));
mas_set_height(mas);
} else {
@@ -2798,8 +2798,7 @@ static inline void mas_wmb_replace(struct ma_state *mas,
static inline void mast_new_root(struct maple_subtree_state *mast,
struct ma_state *mas)
{
- mas_mn(mast->l)->parent =
- ma_parent_ptr(((unsigned long)mas->tree | MA_ROOT_PARENT));
+ mas_mn(mast->l)->parent = ma_parent_ptr(mas_tree_parent(mas));
if (!mte_dead_node(mast->orig_l->node) &&
!mte_is_root(mast->orig_l->node)) {
do {
@@ -3661,8 +3660,7 @@ static inline int mas_root_expand(struct ma_state *mas, void *entry)
node = mas_pop_node(mas);
pivots = ma_pivots(node, type);
slots = ma_slots(node, type);
- node->parent = ma_parent_ptr(
- ((unsigned long)mas->tree | MA_ROOT_PARENT));
+ node->parent = ma_parent_ptr(mas_tree_parent(mas));
mas->node = mt_mk_node(node, type);
if (mas->index) {
@@ -3938,8 +3936,7 @@ static inline int mas_new_root(struct ma_state *mas, void *entry)
node = mas_pop_node(mas);
pivots = ma_pivots(node, type);
slots = ma_slots(node, type);
- node->parent = ma_parent_ptr(
- ((unsigned long)mas->tree | MA_ROOT_PARENT));
+ node->parent = ma_parent_ptr(mas_tree_parent(mas));
mas->node = mt_mk_node(node, type);
rcu_assign_pointer(slots[0], entry);
pivots[0] = mas->last;