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-rw-r--r--fs/btrfs/disk-io.h117
1 files changed, 53 insertions, 64 deletions
diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index 8c2d6cf1ce59..9fa923e005a3 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -6,9 +6,6 @@
#ifndef BTRFS_DISK_IO_H
#define BTRFS_DISK_IO_H
-#define BTRFS_SUPER_INFO_OFFSET SZ_64K
-#define BTRFS_SUPER_INFO_SIZE 4096
-
#define BTRFS_SUPER_MIRROR_MAX 3
#define BTRFS_SUPER_MIRROR_SHIFT 12
@@ -20,14 +17,6 @@
*/
#define BTRFS_BDEV_BLOCKSIZE (4096)
-enum btrfs_wq_endio_type {
- BTRFS_WQ_ENDIO_DATA,
- BTRFS_WQ_ENDIO_METADATA,
- BTRFS_WQ_ENDIO_FREE_SPACE,
- BTRFS_WQ_ENDIO_RAID56,
- BTRFS_WQ_ENDIO_DIO_REPAIR,
-};
-
static inline u64 btrfs_sb_offset(int mirror)
{
u64 start = SZ_16K;
@@ -39,51 +28,64 @@ static inline u64 btrfs_sb_offset(int mirror)
struct btrfs_device;
struct btrfs_fs_devices;
+void btrfs_check_leaked_roots(struct btrfs_fs_info *fs_info);
+void btrfs_init_fs_info(struct btrfs_fs_info *fs_info);
int btrfs_verify_level_key(struct extent_buffer *eb, int level,
struct btrfs_key *first_key, u64 parent_transid);
struct extent_buffer *read_tree_block(struct btrfs_fs_info *fs_info, u64 bytenr,
- u64 parent_transid, int level,
- struct btrfs_key *first_key);
-void readahead_tree_block(struct btrfs_fs_info *fs_info, u64 bytenr);
+ u64 owner_root, u64 parent_transid,
+ int level, struct btrfs_key *first_key);
struct extent_buffer *btrfs_find_create_tree_block(
struct btrfs_fs_info *fs_info,
- u64 bytenr);
+ u64 bytenr, u64 owner_root,
+ int level);
void btrfs_clean_tree_block(struct extent_buffer *buf);
+void btrfs_clear_oneshot_options(struct btrfs_fs_info *fs_info);
+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,
char *options);
void __cold close_ctree(struct btrfs_fs_info *fs_info);
+int btrfs_validate_super(struct btrfs_fs_info *fs_info,
+ struct btrfs_super_block *sb, int mirror_num);
+int btrfs_check_features(struct btrfs_fs_info *fs_info, struct super_block *sb);
int write_all_supers(struct btrfs_fs_info *fs_info, int max_mirrors);
-struct buffer_head *btrfs_read_dev_super(struct block_device *bdev);
-int btrfs_read_dev_one_super(struct block_device *bdev, int copy_num,
- struct buffer_head **bh_ret);
+struct btrfs_super_block *btrfs_read_dev_super(struct block_device *bdev);
+struct btrfs_super_block *btrfs_read_dev_one_super(struct block_device *bdev,
+ int copy_num, bool drop_cache);
int btrfs_commit_super(struct btrfs_fs_info *fs_info);
-struct btrfs_root *btrfs_read_fs_root(struct btrfs_root *tree_root,
- struct btrfs_key *location);
-int btrfs_init_fs_root(struct btrfs_root *root);
-struct btrfs_root *btrfs_lookup_fs_root(struct btrfs_fs_info *fs_info,
- u64 root_id);
+struct btrfs_root *btrfs_read_tree_root(struct btrfs_root *tree_root,
+ 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,
- struct btrfs_key *key,
- bool check_ref);
-static inline struct btrfs_root *
-btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info,
- struct btrfs_key *location)
-{
- return btrfs_get_fs_root(fs_info, location, true);
-}
-
+ 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);
int btrfs_cleanup_fs_roots(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);
-void btrfs_free_fs_root(struct btrfs_root *root);
-
+int btrfs_validate_metadata_buffer(struct btrfs_bio *bbio,
+ struct page *page, u64 start, u64 end,
+ int mirror);
+void btrfs_submit_metadata_bio(struct inode *inode, struct bio *bio, int mirror_num);
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
struct btrfs_root *btrfs_alloc_dummy_root(struct btrfs_fs_info *fs_info);
#endif
@@ -95,32 +97,35 @@ struct btrfs_root *btrfs_alloc_dummy_root(struct btrfs_fs_info *fs_info);
* If you want to ensure the whole tree is safe, you should use
* fs_info->subvol_srcu
*/
-static inline struct btrfs_root *btrfs_grab_fs_root(struct btrfs_root *root)
+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;
}
-static inline void btrfs_put_fs_root(struct btrfs_root *root)
+static inline struct btrfs_root *btrfs_block_group_root(struct btrfs_fs_info *fs_info)
{
- if (refcount_dec_and_test(&root->refs))
- kfree(root);
+ if (btrfs_fs_compat_ro(fs_info, BLOCK_GROUP_TREE))
+ return fs_info->block_group_root;
+ return btrfs_extent_root(fs_info, 0);
}
+void btrfs_put_root(struct btrfs_root *root);
void btrfs_mark_buffer_dirty(struct extent_buffer *buf);
int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid,
int atomic);
-int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid, int level,
- struct btrfs_key *first_key);
-blk_status_t btrfs_bio_wq_end_io(struct btrfs_fs_info *info, struct bio *bio,
- enum btrfs_wq_endio_type metadata);
-blk_status_t btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct bio *bio,
- int mirror_num, unsigned long bio_flags,
- u64 bio_offset, void *private_data,
- extent_submit_bio_start_t *submit_bio_start);
+int btrfs_read_extent_buffer(struct extent_buffer *buf, u64 parent_transid,
+ int level, struct btrfs_key *first_key);
+bool btrfs_wq_submit_bio(struct inode *inode, struct bio *bio, int mirror_num,
+ u64 dio_file_offset,
+ extent_submit_bio_start_t *submit_bio_start);
blk_status_t btrfs_submit_bio_done(void *private_data, struct bio *bio,
int mirror_num);
+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,
@@ -133,24 +138,8 @@ struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans,
u64 objectid);
int btree_lock_page_hook(struct page *page, void *data,
void (*flush_fn)(void *));
-struct extent_map *btree_get_extent(struct btrfs_inode *inode,
- struct page *page, size_t pg_offset,
- u64 start, u64 len);
int btrfs_get_num_tolerated_disk_barrier_failures(u64 flags);
-int __init btrfs_end_io_wq_init(void);
-void __cold btrfs_end_io_wq_exit(void);
-
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
-void btrfs_init_lockdep(void);
-void btrfs_set_buffer_lockdep_class(u64 objectid,
- struct extent_buffer *eb, int level);
-#else
-static inline void btrfs_init_lockdep(void)
-{ }
-static inline void btrfs_set_buffer_lockdep_class(u64 objectid,
- struct extent_buffer *eb, int level)
-{
-}
-#endif
+int btrfs_get_free_objectid(struct btrfs_root *root, u64 *objectid);
+int btrfs_init_root_free_objectid(struct btrfs_root *root);
#endif
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.