disk-io-h.rar_FAT32 SD_fat

#ifndef __DISKIO__ 020 #define __DISKIO__ 021 022 #define BTRFS_SUPER_INFO_OFFSET (64 * 1024) 023 #define BTRFS_SUPER_INFO_SIZE 4096 024 025 #define BTRFS_SUPER_MIRROR_MAX 3 026 #define BTRFS_SUPER_MIRROR_SHIFT 12 027 028 static inline u64 btrfs_sb_offset(int mirror) 029 { 030 u64 start = 16 * 1024; 031 if (mirror) 032 return start << (BTRFS_SUPER_MIRROR_SHIFT * mirror); 033 return BTRFS_SUPER_INFO_OFFSET; 034 } 035 036 struct btrfs_device; 037 struct btrfs_fs_devices; 038 039 struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr, 040 u32 blocksize, u64 parent_transid); 041 int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize, 042 u64 parent_transid); 043 struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root, 044 u64 bytenr, u32 blocksize); 045 int clean_tree_block(struct btrfs_trans_handle *trans, 046 struct btrfs_root *root, struct extent_buffer *buf); 047 struct btrfs_root *open_ctree(struct super_block *sb, 048 struct btrfs_fs_devices *fs_devices, 049 char *options); 050 int close_ctree(struct btrfs_root *root); 051 int write_ctree_super(struct btrfs_trans_handle *trans, 052 struct btrfs_root *root, int max_mirrors); 053 struct buffer_head *btrfs_read_dev_super(struct block_device *bdev); 054 int btrfs_commit_super(struct btrfs_root *root); 055 struct extent_buffer *btrfs_find_tree_block(struct btrfs_root *root, 056 u64 bytenr, u32 blocksize); 057 struct btrfs_root *btrfs_lookup_fs_root(struct btrfs_fs_info *fs_info, 058 u64 root_objectid); 059 struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info, 060 struct btrfs_key *location, 061 const char *name, int namelen); 062 struct btrfs_root *btrfs_read_fs_root_no_radix(struct btrfs_root *tree_root, 063 struct btrfs_key *location); 064 struct btrfs_root *btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info, 065 struct btrfs_key *location); 066 int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info); 067 int btrfs_insert_dev_radix(struct btrfs_root *root, 068 struct block_device *bdev, 069 u64 device_id, 070 u64 block_start, 071 u64 num_blocks); 072 void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr); 073 int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root); 074 void btrfs_mark_buffer_dirty(struct extent_buffer *buf); 075 void btrfs_mark_buffer_dirty_nonblocking(struct extent_buffer *buf); 076 int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid); 077 int btrfs_set_buffer_uptodate(struct extent_buffer *buf); 078 int wait_on_tree_block_writeback(struct btrfs_root *root, 079 struct extent_buffer *buf); 080 int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid); 081 u32 btrfs_csum_data(struct btrfs_root *root, char *data, u32 seed, size_t len); 082 void btrfs_csum_final(u32 crc, char *result); 083 int btrfs_open_device(struct btrfs_device *dev); 084 int btrfs_verify_block_csum(struct btrfs_root *root, 085 struct extent_buffer *buf); 086 int btrfs_bio_wq_end_io(struct btrfs_fs_info *info, struct bio *bio, 087 int metadata); 088 int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode, 089 int rw, struct bio *bio, int mirror_num, 090 unsigned long bio_flags, u64 bio_offset, 091 extent_submit_bio_hook_t *submit_bio_start, 092 extent_submit_bio_hook_t *submit_bio_done); 093 094 int btrfs_congested_async(struct btrfs_fs_info *info, int iodone); 095 unsigned long btrfs_async_submit_limit(struct btrfs_fs_info *info); 096 int btrfs_write_tree_block(struct extent_buffer *buf); 097 int btrfs_wait_tree_block_writeback(struct extent_buffer *buf); 098 int btrfs_init_log_root_tree(struct btrfs_trans_handle *trans, 099 struct btrfs_fs_info *fs_info); 100 int btrfs_add_log_tree(struct btrfs_trans_handle *trans, 101 struct btrfs_root *root); 102 int btree_lock_page_hook(struct page *page); 103 104 105 #ifdef CONFIG_DEBUG_LOCK_ALLOC 106 void btrfs_set_buffer_lockdep_class(struct extent_buffer *eb, int level); 107 #else 108 static inline void btrfs_set_buffer_lockdep_class(struct extent_buffer *eb, 109 int level) 110 { 111 } 112 #endif 113 #endif