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1/* SPDX-License-Identifier: GPL-2.0 */2 3#ifndef BTRFS_FILE_ITEM_H4#define BTRFS_FILE_ITEM_H5 6#include <linux/list.h>7#include <uapi/linux/btrfs_tree.h>8#include "accessors.h"9 10struct extent_map;11struct btrfs_file_extent_item;12struct btrfs_fs_info;13struct btrfs_path;14struct btrfs_bio;15struct btrfs_trans_handle;16struct btrfs_root;17struct btrfs_ordered_sum;18struct btrfs_path;19struct btrfs_inode;20 21#define BTRFS_FILE_EXTENT_INLINE_DATA_START \22 (offsetof(struct btrfs_file_extent_item, disk_bytenr))23 24static 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 any31 * extent headers. If a file is compressed on disk, this is the compressed32 * size.33 */34static inline u32 btrfs_file_extent_inline_item_len(35 const struct extent_buffer *eb,36 int nr)37{38 return btrfs_item_size(eb, nr) - BTRFS_FILE_EXTENT_INLINE_DATA_START;39}40 41static 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 47static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize)48{49 return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize;50}51 52int btrfs_del_csums(struct btrfs_trans_handle *trans,53 struct btrfs_root *root, u64 bytenr, u64 len);54blk_status_t btrfs_lookup_bio_sums(struct btrfs_bio *bbio);55int btrfs_insert_hole_extent(struct btrfs_trans_handle *trans,56 struct btrfs_root *root, u64 objectid, u64 pos,57 u64 num_bytes);58int 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);62int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,63 struct btrfs_root *root,64 struct btrfs_ordered_sum *sums);65blk_status_t btrfs_csum_one_bio(struct btrfs_bio *bbio);66blk_status_t btrfs_alloc_dummy_sum(struct btrfs_bio *bbio);67int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,68 struct list_head *list, int search_commit,69 bool nowait);70int btrfs_lookup_csums_list(struct btrfs_root *root, u64 start, u64 end,71 struct list_head *list, bool nowait);72int btrfs_lookup_csums_bitmap(struct btrfs_root *root, struct btrfs_path *path,73 u64 start, u64 end, u8 *csum_buf,74 unsigned long *csum_bitmap);75void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode,76 const struct btrfs_path *path,77 const struct btrfs_file_extent_item *fi,78 struct extent_map *em);79int btrfs_inode_clear_file_extent_range(struct btrfs_inode *inode, u64 start,80 u64 len);81int btrfs_inode_set_file_extent_range(struct btrfs_inode *inode, u64 start, u64 len);82void btrfs_inode_safe_disk_i_size_write(struct btrfs_inode *inode, u64 new_i_size);83u64 btrfs_file_extent_end(const struct btrfs_path *path);84 85#endif86