linux-imx

/* SPDX-License-Identifier: GPL-2.0 */

/*

 * Copyright (C) 2011 STRATO.  All rights reserved.

 */

​

#ifndef BTRFS_BACKREF_H

#define BTRFS_BACKREF_H

​

#include <linux/btrfs.h>

#include "ulist.h"

#include "extent_io.h"

​

struct inode_fs_paths {

    struct btrfs_path       *btrfs_path;

    struct btrfs_root       *fs_root;

    struct btrfs_data_container *fspath;

};

​

typedef int (iterate_extent_inodes_t)(u64 inum, u64 offset, u64 root,

        void *ctx);

​

int extent_from_logical(struct btrfs_fs_info *fs_info, u64 logical,

            struct btrfs_path *path, struct btrfs_key *found_key,

            u64 *flags);

​

int tree_backref_for_extent(unsigned long *ptr, struct extent_buffer *eb,

                struct btrfs_key *key, struct btrfs_extent_item *ei,

                u32 item_size, u64 *out_root, u8 *out_level);

​

int iterate_extent_inodes(struct btrfs_fs_info *fs_info,

                u64 extent_item_objectid,

                u64 extent_offset, int search_commit_root,

                iterate_extent_inodes_t *iterate, void *ctx,

                bool ignore_offset);

​

int iterate_inodes_from_logical(u64 logical, struct btrfs_fs_info *fs_info,

                struct btrfs_path *path,

                iterate_extent_inodes_t *iterate, void *ctx,

                bool ignore_offset);

​

int paths_from_inode(u64 inum, struct inode_fs_paths *ipath);

​

int btrfs_find_all_roots(struct btrfs_trans_handle *trans,

             struct btrfs_fs_info *fs_info, u64 bytenr,

             u64 time_seq, struct ulist **roots, bool ignore_offset);

char *btrfs_ref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path,

            u32 name_len, unsigned long name_off,

            struct extent_buffer *eb_in, u64 parent,

            char *dest, u32 size);

​

struct btrfs_data_container *init_data_container(u32 total_bytes);

struct inode_fs_paths *init_ipath(s32 total_bytes, struct btrfs_root *fs_root,

                    struct btrfs_path *path);

void free_ipath(struct inode_fs_paths *ipath);

​

int btrfs_find_one_extref(struct btrfs_root *root, u64 inode_objectid,

              u64 start_off, struct btrfs_path *path,

              struct btrfs_inode_extref **ret_extref,

              u64 *found_off);

int btrfs_check_shared(struct btrfs_root *root, u64 inum, u64 bytenr);

​

int __init btrfs_prelim_ref_init(void);

void __cold btrfs_prelim_ref_exit(void);