add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/btrfs/disk-io.h
..
..
@@ -21,11 +21,10 @@
21
21
 #define BTRFS_BDEV_BLOCKSIZE	(4096)
22
22
 
23
23
 enum btrfs_wq_endio_type {
24
-	BTRFS_WQ_ENDIO_DATA = 0,
25
-	BTRFS_WQ_ENDIO_METADATA = 1,
26
-	BTRFS_WQ_ENDIO_FREE_SPACE = 2,
27
-	BTRFS_WQ_ENDIO_RAID56 = 3,
28
-	BTRFS_WQ_ENDIO_DIO_REPAIR = 4,
24
+	BTRFS_WQ_ENDIO_DATA,
25
+	BTRFS_WQ_ENDIO_METADATA,
26
+	BTRFS_WQ_ENDIO_FREE_SPACE,
27
+	BTRFS_WQ_ENDIO_RAID56,
29
28
 };
30
29
 
31
30
 static inline u64 btrfs_sb_offset(int mirror)
..
..
@@ -39,54 +38,52 @@
39
38
 struct btrfs_device;
40
39
 struct btrfs_fs_devices;
41
40
 
42
-int btrfs_verify_level_key(struct btrfs_fs_info *fs_info,
43
-			   struct extent_buffer *eb, int level,
41
+void btrfs_check_leaked_roots(struct btrfs_fs_info *fs_info);
42
+void btrfs_init_fs_info(struct btrfs_fs_info *fs_info);
43
+int btrfs_verify_level_key(struct extent_buffer *eb, int level,
44
44
 			   struct btrfs_key *first_key, u64 parent_transid);
45
45
 struct extent_buffer *read_tree_block(struct btrfs_fs_info *fs_info, u64 bytenr,
46
46
 				      u64 parent_transid, int level,
47
47
 				      struct btrfs_key *first_key);
48
48
 void readahead_tree_block(struct btrfs_fs_info *fs_info, u64 bytenr);
49
-int reada_tree_block_flagged(struct btrfs_fs_info *fs_info, u64 bytenr,
50
-			 int mirror_num, struct extent_buffer **eb);
51
49
 struct extent_buffer *btrfs_find_create_tree_block(
52
50
 						struct btrfs_fs_info *fs_info,
53
51
 						u64 bytenr);
54
-void clean_tree_block(struct btrfs_fs_info *fs_info, struct extent_buffer *buf);
55
-int open_ctree(struct super_block *sb,
52
+void btrfs_clean_tree_block(struct extent_buffer *buf);
53
+int __cold open_ctree(struct super_block *sb,
56
54
 	       struct btrfs_fs_devices *fs_devices,
57
55
 	       char *options);
58
-void close_ctree(struct btrfs_fs_info *fs_info);
56
+void __cold close_ctree(struct btrfs_fs_info *fs_info);
59
57
 int write_all_supers(struct btrfs_fs_info *fs_info, int max_mirrors);
60
-struct buffer_head *btrfs_read_dev_super(struct block_device *bdev);
61
-int btrfs_read_dev_one_super(struct block_device *bdev, int copy_num,
62
-			struct buffer_head **bh_ret);
58
+struct btrfs_super_block *btrfs_read_dev_super(struct block_device *bdev);
59
+struct btrfs_super_block *btrfs_read_dev_one_super(struct block_device *bdev,
60
+						   int copy_num);
63
61
 int btrfs_commit_super(struct btrfs_fs_info *fs_info);
64
-struct btrfs_root *btrfs_read_fs_root(struct btrfs_root *tree_root,
65
-				      struct btrfs_key *location);
66
-int btrfs_init_fs_root(struct btrfs_root *root);
67
-struct btrfs_root *btrfs_lookup_fs_root(struct btrfs_fs_info *fs_info,
68
-					u64 root_id);
62
+struct btrfs_root *btrfs_read_tree_root(struct btrfs_root *tree_root,
63
+					struct btrfs_key *key);
69
64
 int btrfs_insert_fs_root(struct btrfs_fs_info *fs_info,
70
65
 			 struct btrfs_root *root);
71
66
 void btrfs_free_fs_roots(struct btrfs_fs_info *fs_info);
72
67
 
73
68
 struct btrfs_root *btrfs_get_fs_root(struct btrfs_fs_info *fs_info,
74
-				     struct btrfs_key *key,
75
-				     bool check_ref);
76
-static inline struct btrfs_root *
77
-btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info,
78
-			   struct btrfs_key *location)
79
-{
80
-	return btrfs_get_fs_root(fs_info, location, true);
81
-}
69
+				     u64 objectid, bool check_ref);
70
+struct btrfs_root *btrfs_get_new_fs_root(struct btrfs_fs_info *fs_info,
71
+					 u64 objectid, dev_t anon_dev);
72
+struct btrfs_root *btrfs_get_fs_root_commit_root(struct btrfs_fs_info *fs_info,
73
+						 struct btrfs_path *path,
74
+						 u64 objectid);
82
75
 
76
+void btrfs_free_fs_info(struct btrfs_fs_info *fs_info);
83
77
 int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info);
84
78
 void btrfs_btree_balance_dirty(struct btrfs_fs_info *fs_info);
85
79
 void btrfs_btree_balance_dirty_nodelay(struct btrfs_fs_info *fs_info);
86
80
 void btrfs_drop_and_free_fs_root(struct btrfs_fs_info *fs_info,
87
81
 				 struct btrfs_root *root);
88
-void btrfs_free_fs_root(struct btrfs_root *root);
89
-
82
+int btrfs_validate_metadata_buffer(struct btrfs_io_bio *io_bio, u64 phy_offset,
83
+				   struct page *page, u64 start, u64 end,
84
+				   int mirror);
85
+blk_status_t btrfs_submit_metadata_bio(struct inode *inode, struct bio *bio,
86
+				       int mirror_num, unsigned long bio_flags);
90
87
 #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
91
88
 struct btrfs_root *btrfs_alloc_dummy_root(struct btrfs_fs_info *fs_info);
92
89
 #endif
..
..
@@ -98,26 +95,21 @@
98
95
  * If you want to ensure the whole tree is safe, you should use
99
96
  * 	fs_info->subvol_srcu
100
97
  */
101
-static inline struct btrfs_root *btrfs_grab_fs_root(struct btrfs_root *root)
98
+static inline struct btrfs_root *btrfs_grab_root(struct btrfs_root *root)
102
99
 {
100
+	if (!root)
101
+		return NULL;
103
102
 	if (refcount_inc_not_zero(&root->refs))
104
103
 		return root;
105
104
 	return NULL;
106
105
 }
107
106
 
108
-static inline void btrfs_put_fs_root(struct btrfs_root *root)
109
-{
110
-	if (refcount_dec_and_test(&root->refs))
111
-		kfree(root);
112
-}
113
-
107
+void btrfs_put_root(struct btrfs_root *root);
114
108
 void btrfs_mark_buffer_dirty(struct extent_buffer *buf);
115
109
 int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid,
116
110
 			  int atomic);
117
111
 int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid, int level,
118
112
 		      struct btrfs_key *first_key);
119
-u32 btrfs_csum_data(const char *data, u32 seed, size_t len);
120
-void btrfs_csum_final(u32 crc, u8 *result);
121
113
 blk_status_t btrfs_bio_wq_end_io(struct btrfs_fs_info *info, struct bio *bio,
122
114
 			enum btrfs_wq_endio_type metadata);
123
115
 blk_status_t btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct bio *bio,
..
..
@@ -126,8 +118,6 @@
126
118
 			extent_submit_bio_start_t *submit_bio_start);
127
119
 blk_status_t btrfs_submit_bio_done(void *private_data, struct bio *bio,
128
120
 			  int mirror_num);
129
-int btrfs_write_tree_block(struct extent_buffer *buf);
130
-void btrfs_wait_tree_block_writeback(struct extent_buffer *buf);
131
121
 int btrfs_init_log_root_tree(struct btrfs_trans_handle *trans,
132
122
 			     struct btrfs_fs_info *fs_info);
133
123
 int btrfs_add_log_tree(struct btrfs_trans_handle *trans,
..
..
@@ -137,14 +127,12 @@
137
127
 void btrfs_cleanup_one_transaction(struct btrfs_transaction *trans,
138
128
 				  struct btrfs_fs_info *fs_info);
139
129
 struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans,
140
-				     struct btrfs_fs_info *fs_info,
141
130
 				     u64 objectid);
142
131
 int btree_lock_page_hook(struct page *page, void *data,
143
132
 				void (*flush_fn)(void *));
144
-struct extent_map *btree_get_extent(struct btrfs_inode *inode,
145
-		struct page *page, size_t pg_offset, u64 start, u64 len,
146
-		int create);
147
133
 int btrfs_get_num_tolerated_disk_barrier_failures(u64 flags);
134
+int btrfs_find_free_objectid(struct btrfs_root *root, u64 *objectid);
135
+int btrfs_find_highest_objectid(struct btrfs_root *root, u64 *objectid);
148
136
 int __init btrfs_end_io_wq_init(void);
149
137
 void __cold btrfs_end_io_wq_exit(void);
150
138