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