mirror of
https://github.com/torvalds/linux.git
synced 2026-01-12 00:42:35 +08:00
c5667f9c8e
[BUG] When I tried to remove btrfs_bio::fs_info and use btrfs_bio::inode to grab the fs_info, the header "btrfs_inode.h" is needed to access the full btrfs_inode structure. Then btrfs will fail to compile. [CAUSE] There is a recursive including chain: "bio.h" -> "btrfs_inode.h" -> "extent_map.h" -> "compression.h" -> "bio.h" That recursive including is causing problems for btrfs. [ENHANCEMENT] To reduce the risk of recursive including: - Remove unnecessary local includes from btrfs headers Either the included header is pulled in by other headers, or is completely unnecessary. - Remove btrfs local includes if the header only requires a pointer In that case let the implementing C file to pull the required header. This is especially important for headers like "btrfs_inode.h" which pulls in a lot of other btrfs headers, thus it's a mine field of recursive including. - Remove unnecessary temporary structure definition Either if we have included the header defining the structure, or completely unused. Now including "btrfs_inode.h" inside "bio.h" is completely fine, although "btrfs_inode.h" still includes "extent_map.h", but that header only includes "fs.h", no more chain back to "bio.h". Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
131 lines
4.8 KiB
C
131 lines
4.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright (C) 2007 Oracle. All rights reserved.
|
|
*/
|
|
|
|
#ifndef BTRFS_DISK_IO_H
|
|
#define BTRFS_DISK_IO_H
|
|
|
|
#include <linux/sizes.h>
|
|
#include <linux/compiler_types.h>
|
|
#include "ctree.h"
|
|
#include "bio.h"
|
|
#include "ordered-data.h"
|
|
|
|
struct block_device;
|
|
struct super_block;
|
|
struct extent_buffer;
|
|
struct btrfs_device;
|
|
struct btrfs_fs_devices;
|
|
struct btrfs_fs_info;
|
|
struct btrfs_super_block;
|
|
struct btrfs_trans_handle;
|
|
struct btrfs_tree_parent_check;
|
|
struct btrfs_transaction;
|
|
|
|
#define BTRFS_SUPER_MIRROR_MAX 3
|
|
#define BTRFS_SUPER_MIRROR_SHIFT 12
|
|
|
|
/*
|
|
* Fixed blocksize for all devices, applies to specific ways of reading
|
|
* metadata like superblock. Must meet the set_blocksize requirements.
|
|
*
|
|
* Do not change.
|
|
*/
|
|
#define BTRFS_BDEV_BLOCKSIZE (4096)
|
|
|
|
static inline u64 btrfs_sb_offset(int mirror)
|
|
{
|
|
u64 start = SZ_16K;
|
|
if (mirror)
|
|
return start << (BTRFS_SUPER_MIRROR_SHIFT * mirror);
|
|
return BTRFS_SUPER_INFO_OFFSET;
|
|
}
|
|
|
|
void btrfs_check_leaked_roots(const struct btrfs_fs_info *fs_info);
|
|
void btrfs_init_fs_info(struct btrfs_fs_info *fs_info);
|
|
struct extent_buffer *read_tree_block(struct btrfs_fs_info *fs_info, u64 bytenr,
|
|
struct btrfs_tree_parent_check *check);
|
|
struct extent_buffer *btrfs_find_create_tree_block(
|
|
struct btrfs_fs_info *fs_info,
|
|
u64 bytenr, u64 owner_root,
|
|
int level);
|
|
int btrfs_start_pre_rw_mount(struct btrfs_fs_info *fs_info);
|
|
int btrfs_check_super_csum(struct btrfs_fs_info *fs_info,
|
|
const struct btrfs_super_block *disk_sb);
|
|
int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_devices);
|
|
void __cold close_ctree(struct btrfs_fs_info *fs_info);
|
|
int btrfs_validate_super(const struct btrfs_fs_info *fs_info,
|
|
const struct btrfs_super_block *sb, int mirror_num);
|
|
int btrfs_check_features(struct btrfs_fs_info *fs_info, bool is_rw_mount);
|
|
int write_all_supers(struct btrfs_fs_info *fs_info, int max_mirrors);
|
|
int btrfs_commit_super(struct btrfs_fs_info *fs_info);
|
|
struct btrfs_root *btrfs_read_tree_root(struct btrfs_root *tree_root,
|
|
const struct btrfs_key *key);
|
|
int btrfs_insert_fs_root(struct btrfs_fs_info *fs_info,
|
|
struct btrfs_root *root);
|
|
void btrfs_free_fs_roots(struct btrfs_fs_info *fs_info);
|
|
|
|
struct btrfs_root *btrfs_get_fs_root(struct btrfs_fs_info *fs_info,
|
|
u64 objectid, bool check_ref);
|
|
struct btrfs_root *btrfs_get_new_fs_root(struct btrfs_fs_info *fs_info,
|
|
u64 objectid, dev_t *anon_dev);
|
|
struct btrfs_root *btrfs_get_fs_root_commit_root(struct btrfs_fs_info *fs_info,
|
|
struct btrfs_path *path,
|
|
u64 objectid);
|
|
int btrfs_global_root_insert(struct btrfs_root *root);
|
|
void btrfs_global_root_delete(struct btrfs_root *root);
|
|
struct btrfs_root *btrfs_global_root(struct btrfs_fs_info *fs_info,
|
|
struct btrfs_key *key);
|
|
struct btrfs_root *btrfs_csum_root(struct btrfs_fs_info *fs_info, u64 bytenr);
|
|
struct btrfs_root *btrfs_extent_root(struct btrfs_fs_info *fs_info, u64 bytenr);
|
|
|
|
void btrfs_free_fs_info(struct btrfs_fs_info *fs_info);
|
|
void btrfs_btree_balance_dirty(struct btrfs_fs_info *fs_info);
|
|
void btrfs_btree_balance_dirty_nodelay(struct btrfs_fs_info *fs_info);
|
|
void btrfs_drop_and_free_fs_root(struct btrfs_fs_info *fs_info,
|
|
struct btrfs_root *root);
|
|
int btrfs_validate_extent_buffer(struct extent_buffer *eb,
|
|
const struct btrfs_tree_parent_check *check);
|
|
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
|
|
struct btrfs_root *btrfs_alloc_dummy_root(struct btrfs_fs_info *fs_info);
|
|
#endif
|
|
|
|
/*
|
|
* This function is used to grab the root, and avoid it is freed when we
|
|
* access it. But it doesn't ensure that the tree is not dropped.
|
|
*/
|
|
static inline struct btrfs_root *btrfs_grab_root(struct btrfs_root *root)
|
|
{
|
|
if (!root)
|
|
return NULL;
|
|
if (refcount_inc_not_zero(&root->refs))
|
|
return root;
|
|
return NULL;
|
|
}
|
|
|
|
void btrfs_put_root(struct btrfs_root *root);
|
|
void btrfs_mark_buffer_dirty(struct btrfs_trans_handle *trans,
|
|
struct extent_buffer *buf);
|
|
int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid, bool atomic);
|
|
int btrfs_read_extent_buffer(struct extent_buffer *buf,
|
|
const struct btrfs_tree_parent_check *check);
|
|
|
|
int btree_csum_one_bio(struct btrfs_bio *bbio);
|
|
int btrfs_alloc_log_tree_node(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root);
|
|
int btrfs_init_log_root_tree(struct btrfs_trans_handle *trans,
|
|
struct btrfs_fs_info *fs_info);
|
|
int btrfs_add_log_tree(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root);
|
|
void btrfs_cleanup_dirty_bgs(struct btrfs_transaction *trans,
|
|
struct btrfs_fs_info *fs_info);
|
|
void btrfs_cleanup_one_transaction(struct btrfs_transaction *trans);
|
|
struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans,
|
|
u64 objectid);
|
|
int btrfs_get_num_tolerated_disk_barrier_failures(u64 flags);
|
|
int btrfs_get_free_objectid(struct btrfs_root *root, u64 *objectid);
|
|
int btrfs_init_root_free_objectid(struct btrfs_root *root);
|
|
|
|
#endif
|