projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| eb60ceac CM |
1 | #ifndef __DISKIO__ |
| 2 | #define __DISKIO__ | |
| 3 | ||
| e20d96d6 | 4 | #include <linux/buffer_head.h> |
| eb60ceac | 5 | |
| e20d96d6 CM |
6 | #define BTRFS_SUPER_INFO_OFFSET (16 * 1024) |
| 7 | ||
| 090d1875 CM |
8 | enum btrfs_bh_state_bits { |
| 9 | BH_Checked = BH_PrivateStart, | |
| 10 | }; | |
| 11 | BUFFER_FNS(Checked, checked); | |
| 12 | ||
| e20d96d6 CM |
13 | static inline struct btrfs_node *btrfs_buffer_node(struct buffer_head *bh) |
| 14 | { | |
| 15 | return (struct btrfs_node *)bh->b_data; | |
| 16 | } | |
| 17 | ||
| 18 | static inline struct btrfs_leaf *btrfs_buffer_leaf(struct buffer_head *bh) | |
| 19 | { | |
| 20 | return (struct btrfs_leaf *)bh->b_data; | |
| 21 | } | |
| 22 | ||
| 23 | static inline struct btrfs_header *btrfs_buffer_header(struct buffer_head *bh) | |
| 24 | { | |
| 25 | return &((struct btrfs_node *)bh->b_data)->header; | |
| 26 | } | |
| 27 | ||
| 28 | struct buffer_head *read_tree_block(struct btrfs_root *root, u64 blocknr); | |
| 090d1875 | 29 | int readahead_tree_block(struct btrfs_root *root, u64 blocknr); |
| d98237b3 CM |
30 | struct buffer_head *btrfs_find_create_tree_block(struct btrfs_root *root, |
| 31 | u64 blocknr); | |
| e089f05c | 32 | int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
| e20d96d6 | 33 | struct buffer_head *buf); |
| e089f05c | 34 | int dirty_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
| e20d96d6 | 35 | struct buffer_head *buf); |
| e089f05c | 36 | int clean_tree_block(struct btrfs_trans_handle *trans, |
| e20d96d6 | 37 | struct btrfs_root *root, struct buffer_head *buf); |
| 79154b1b CM |
38 | int btrfs_commit_transaction(struct btrfs_trans_handle *trans, |
| 39 | struct btrfs_root *root); | |
| 2c90e5d6 | 40 | struct btrfs_root *open_ctree(struct super_block *sb); |
| e20d96d6 CM |
41 | int close_ctree(struct btrfs_root *root); |
| 42 | void btrfs_block_release(struct btrfs_root *root, struct buffer_head *buf); | |
| 79154b1b CM |
43 | int write_ctree_super(struct btrfs_trans_handle *trans, |
| 44 | struct btrfs_root *root); | |
| d98237b3 | 45 | struct buffer_head *btrfs_find_tree_block(struct btrfs_root *root, u64 blocknr); |
| f254e52c CM |
46 | int btrfs_csum_data(struct btrfs_root * root, char *data, size_t len, |
| 47 | char *result); | |
| 0f7d52f4 CM |
48 | struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info, |
| 49 | struct btrfs_key *location); | |
| 7eccb903 | 50 | u64 bh_blocknr(struct buffer_head *bh); |
| 8352d8a4 CM |
51 | int btrfs_insert_dev_radix(struct btrfs_root *root, |
| 52 | struct block_device *bdev, | |
| b4100d64 | 53 | u64 device_id, |
| 8352d8a4 CM |
54 | u64 block_start, |
| 55 | u64 num_blocks); | |
| 56 | int btrfs_map_bh_to_logical(struct btrfs_root *root, struct buffer_head *bh, | |
| 57 | u64 logical); | |
| 35b7e476 CM |
58 | int btrfs_releasepage(struct page *page, gfp_t flags); |
| 59 | void btrfs_btree_balance_dirty(struct btrfs_root *root); | |
| eb60ceac | 60 | #endif |