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
BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info * info)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 */
btrfs_file_extent_inline_item_len(const struct extent_buffer * eb,int nr)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, nr) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
26 }
27
btrfs_file_extent_inline_start(const struct btrfs_file_extent_item * e)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
btrfs_file_extent_calc_inline_size(u32 datasize)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
