Line data    Source code

       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     1336218 :         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          16 : static inline u32 btrfs_file_extent_inline_item_len(
      22             :                                                 const struct extent_buffer *eb,
      23             :                                                 int nr)
      24             : {
      25          16 :         return btrfs_item_size(eb, 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     1154832 :         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     1344109 :         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, u64 start, u64 end,
      61             :                               u8 *csum_buf, unsigned long *csum_bitmap,
      62             :                               bool search_commit);
      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