1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | |
3 | #ifndef BTRFS_FILE_ITEM_H |
4 | #define BTRFS_FILE_ITEM_H |
5 | |
6 | #include <linux/list.h> |
7 | #include <uapi/linux/btrfs_tree.h> |
8 | #include "accessors.h" |
9 | |
10 | struct extent_map; |
11 | struct btrfs_file_extent_item; |
12 | struct btrfs_fs_info; |
13 | struct btrfs_path; |
14 | struct btrfs_bio; |
15 | struct btrfs_trans_handle; |
16 | struct btrfs_root; |
17 | struct btrfs_ordered_sum; |
18 | struct btrfs_path; |
19 | struct btrfs_inode; |
20 | |
21 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ |
22 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) |
23 | |
24 | static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info) |
25 | { |
26 | return BTRFS_MAX_ITEM_SIZE(info) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
27 | } |
28 | |
29 | /* |
30 | * Return the number of bytes used by the item on disk, minus the size of any |
31 | * extent headers. If a file is compressed on disk, this is the compressed |
32 | * size. |
33 | */ |
34 | static inline u32 btrfs_file_extent_inline_item_len( |
35 | const struct extent_buffer *eb, |
36 | int nr) |
37 | { |
38 | return btrfs_item_size(eb, slot: nr) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
39 | } |
40 | |
41 | static inline unsigned long btrfs_file_extent_inline_start( |
42 | const struct btrfs_file_extent_item *e) |
43 | { |
44 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
45 | } |
46 | |
47 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) |
48 | { |
49 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
50 | } |
51 | |
52 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
53 | struct btrfs_root *root, u64 bytenr, u64 len); |
54 | blk_status_t btrfs_lookup_bio_sums(struct btrfs_bio *bbio); |
55 | int btrfs_insert_hole_extent(struct btrfs_trans_handle *trans, |
56 | struct btrfs_root *root, u64 objectid, u64 pos, |
57 | u64 num_bytes); |
58 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
59 | struct btrfs_root *root, |
60 | struct btrfs_path *path, u64 objectid, |
61 | u64 bytenr, int mod); |
62 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
63 | struct btrfs_root *root, |
64 | struct btrfs_ordered_sum *sums); |
65 | blk_status_t btrfs_csum_one_bio(struct btrfs_bio *bbio); |
66 | blk_status_t btrfs_alloc_dummy_sum(struct btrfs_bio *bbio); |
67 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
68 | struct list_head *list, int search_commit, |
69 | bool nowait); |
70 | int btrfs_lookup_csums_list(struct btrfs_root *root, u64 start, u64 end, |
71 | struct list_head *list, int search_commit, |
72 | bool nowait); |
73 | int btrfs_lookup_csums_bitmap(struct btrfs_root *root, struct btrfs_path *path, |
74 | u64 start, u64 end, u8 *csum_buf, |
75 | unsigned long *csum_bitmap); |
76 | void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode, |
77 | const struct btrfs_path *path, |
78 | struct btrfs_file_extent_item *fi, |
79 | struct extent_map *em); |
80 | int btrfs_inode_clear_file_extent_range(struct btrfs_inode *inode, u64 start, |
81 | u64 len); |
82 | int btrfs_inode_set_file_extent_range(struct btrfs_inode *inode, u64 start, u64 len); |
83 | void btrfs_inode_safe_disk_i_size_write(struct btrfs_inode *inode, u64 new_i_size); |
84 | u64 btrfs_file_extent_end(const struct btrfs_path *path); |
85 | |
86 | #endif |
87 | |