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20#ifndef __DELAYED_TREE_OPERATION_H
21#define __DELAYED_TREE_OPERATION_H
22
23#include <linux/rbtree.h>
24#include <linux/spinlock.h>
25#include <linux/mutex.h>
26#include <linux/list.h>
27#include <linux/wait.h>
28#include <linux/atomic.h>
29
30#include "ctree.h"
31
32
33#define BTRFS_DELAYED_INSERTION_ITEM 1
34#define BTRFS_DELAYED_DELETION_ITEM 2
35
36struct btrfs_delayed_root {
37 spinlock_t lock;
38 struct list_head node_list;
39
40
41
42
43
44 struct list_head prepare_list;
45 atomic_t items;
46 atomic_t items_seq;
47 int nodes;
48 wait_queue_head_t wait;
49};
50
51struct btrfs_delayed_node {
52 u64 inode_id;
53 u64 bytes_reserved;
54 struct btrfs_root *root;
55
56 struct list_head n_list;
57
58
59
60
61 struct list_head p_list;
62 struct rb_root ins_root;
63 struct rb_root del_root;
64 struct mutex mutex;
65 struct btrfs_inode_item inode_item;
66 atomic_t refs;
67 u64 index_cnt;
68 bool in_list;
69 bool inode_dirty;
70 int count;
71};
72
73struct btrfs_delayed_item {
74 struct rb_node rb_node;
75 struct btrfs_key key;
76 struct list_head tree_list;
77 struct list_head readdir_list;
78 u64 bytes_reserved;
79 struct btrfs_delayed_node *delayed_node;
80 atomic_t refs;
81 int ins_or_del;
82 u32 data_len;
83 char data[0];
84};
85
86static inline void btrfs_init_delayed_root(
87 struct btrfs_delayed_root *delayed_root)
88{
89 atomic_set(&delayed_root->items, 0);
90 atomic_set(&delayed_root->items_seq, 0);
91 delayed_root->nodes = 0;
92 spin_lock_init(&delayed_root->lock);
93 init_waitqueue_head(&delayed_root->wait);
94 INIT_LIST_HEAD(&delayed_root->node_list);
95 INIT_LIST_HEAD(&delayed_root->prepare_list);
96}
97
98int btrfs_insert_delayed_dir_index(struct btrfs_trans_handle *trans,
99 struct btrfs_root *root, const char *name,
100 int name_len, struct inode *dir,
101 struct btrfs_disk_key *disk_key, u8 type,
102 u64 index);
103
104int btrfs_delete_delayed_dir_index(struct btrfs_trans_handle *trans,
105 struct btrfs_root *root, struct inode *dir,
106 u64 index);
107
108int btrfs_inode_delayed_dir_index_count(struct inode *inode);
109
110int btrfs_run_delayed_items(struct btrfs_trans_handle *trans,
111 struct btrfs_root *root);
112int btrfs_run_delayed_items_nr(struct btrfs_trans_handle *trans,
113 struct btrfs_root *root, int nr);
114
115void btrfs_balance_delayed_items(struct btrfs_root *root);
116
117int btrfs_commit_inode_delayed_items(struct btrfs_trans_handle *trans,
118 struct inode *inode);
119
120void btrfs_remove_delayed_node(struct inode *inode);
121void btrfs_kill_delayed_inode_items(struct inode *inode);
122int btrfs_commit_inode_delayed_inode(struct inode *inode);
123
124
125int btrfs_delayed_update_inode(struct btrfs_trans_handle *trans,
126 struct btrfs_root *root, struct inode *inode);
127int btrfs_fill_inode(struct inode *inode, u32 *rdev);
128
129
130void btrfs_kill_all_delayed_nodes(struct btrfs_root *root);
131
132
133void btrfs_destroy_delayed_inodes(struct btrfs_root *root);
134
135
136void btrfs_get_delayed_items(struct inode *inode, struct list_head *ins_list,
137 struct list_head *del_list);
138void btrfs_put_delayed_items(struct list_head *ins_list,
139 struct list_head *del_list);
140int btrfs_should_delete_dir_index(struct list_head *del_list,
141 u64 index);
142int btrfs_readdir_delayed_dir_index(struct dir_context *ctx,
143 struct list_head *ins_list);
144
145
146int __init btrfs_delayed_inode_init(void);
147void btrfs_delayed_inode_exit(void);
148
149
150void btrfs_assert_delayed_root_empty(struct btrfs_root *root);
151
152#endif
153