From: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Date: Fri, 13 Oct 2023 19:17:56 +0000 (-0700)
Subject: maple_tree: introduce store_type enum
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=81063e1aae774eafa5fa278f6ca60c43e52f3e54;p=users%2Fjedix%2Flinux-maple.git

maple_tree: introduce store_type enum

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@oracle.com>
---

diff --git a/include/linux/maple_tree.h b/include/linux/maple_tree.h
index b3d63123b945..359dcde42629 100644
--- a/include/linux/maple_tree.h
+++ b/include/linux/maple_tree.h
@@ -148,6 +148,19 @@ 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,
+	wr_bnode
+};
 
 /**
  * DOC: Maple tree flags
@@ -432,6 +445,7 @@ 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 {
@@ -473,6 +487,7 @@ 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)				\