Add a store_type enum that is stored in ma_state. This will be used to
keep track of partial walks of the tree so that subsequent walks can
pick up where a previous walk left off.
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
---
include/linux/maple_tree.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/include/linux/maple_tree.h b/include/linux/maple_tree.h
index a53ad4dabd7e..8e1504a81cd2 100644
--- a/include/linux/maple_tree.h
+++ b/include/linux/maple_tree.h
@@ -148,6 +148,18 @@ enum maple_type {
maple_arange_64,
};
+enum store_type {
+ wr_invalid,
+ wr_new_root,
+ wr_store_root,
+ wr_exact_fit,
+ wr_spanning_store,
+ wr_split_store,
+ wr_rebalance,
+ wr_append,
+ wr_node_store,
+ wr_slot_store,
+};
/**
* DOC: Maple tree flags
@@ -436,6 +448,7 @@ struct ma_state {
unsigned char offset;
unsigned char mas_flags;
unsigned char end; /* The end of the node */
+ enum store_type store_type; /* The type of store needed for this operation */
};
struct ma_wr_state {
@@ -477,6 +490,7 @@ struct ma_wr_state {
.max = ULONG_MAX, \
.alloc = NULL, \
.mas_flags = 0, \
+ .store_type = wr_invalid, \
}
#define MA_WR_STATE(name, ma_state, wr_entry) \
--
2.46.0
