123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326 |
- #ifndef OCFS2_ALLOC_H
- #define OCFS2_ALLOC_H
- #define OCFS2_MAX_XATTR_TREE_LEAF_SIZE 65536
- struct ocfs2_extent_tree_operations;
- struct ocfs2_extent_tree {
- const struct ocfs2_extent_tree_operations *et_ops;
- struct buffer_head *et_root_bh;
- struct ocfs2_extent_list *et_root_el;
- struct ocfs2_caching_info *et_ci;
- ocfs2_journal_access_func et_root_journal_access;
- void *et_object;
- unsigned int et_max_leaf_clusters;
- };
- void ocfs2_init_dinode_extent_tree(struct ocfs2_extent_tree *et,
- struct ocfs2_caching_info *ci,
- struct buffer_head *bh);
- void ocfs2_init_xattr_tree_extent_tree(struct ocfs2_extent_tree *et,
- struct ocfs2_caching_info *ci,
- struct buffer_head *bh);
- struct ocfs2_xattr_value_buf;
- void ocfs2_init_xattr_value_extent_tree(struct ocfs2_extent_tree *et,
- struct ocfs2_caching_info *ci,
- struct ocfs2_xattr_value_buf *vb);
- void ocfs2_init_dx_root_extent_tree(struct ocfs2_extent_tree *et,
- struct ocfs2_caching_info *ci,
- struct buffer_head *bh);
- void ocfs2_init_refcount_extent_tree(struct ocfs2_extent_tree *et,
- struct ocfs2_caching_info *ci,
- struct buffer_head *bh);
- int ocfs2_read_extent_block(struct ocfs2_caching_info *ci, u64 eb_blkno,
- struct buffer_head **bh);
- struct ocfs2_alloc_context;
- int ocfs2_insert_extent(handle_t *handle,
- struct ocfs2_extent_tree *et,
- u32 cpos,
- u64 start_blk,
- u32 new_clusters,
- u8 flags,
- struct ocfs2_alloc_context *meta_ac);
- enum ocfs2_alloc_restarted {
- RESTART_NONE = 0,
- RESTART_TRANS,
- RESTART_META
- };
- int ocfs2_add_clusters_in_btree(handle_t *handle,
- struct ocfs2_extent_tree *et,
- u32 *logical_offset,
- u32 clusters_to_add,
- int mark_unwritten,
- struct ocfs2_alloc_context *data_ac,
- struct ocfs2_alloc_context *meta_ac,
- enum ocfs2_alloc_restarted *reason_ret);
- struct ocfs2_cached_dealloc_ctxt;
- struct ocfs2_path;
- int ocfs2_split_extent(handle_t *handle,
- struct ocfs2_extent_tree *et,
- struct ocfs2_path *path,
- int split_index,
- struct ocfs2_extent_rec *split_rec,
- struct ocfs2_alloc_context *meta_ac,
- struct ocfs2_cached_dealloc_ctxt *dealloc);
- int ocfs2_mark_extent_written(struct inode *inode,
- struct ocfs2_extent_tree *et,
- handle_t *handle, u32 cpos, u32 len, u32 phys,
- struct ocfs2_alloc_context *meta_ac,
- struct ocfs2_cached_dealloc_ctxt *dealloc);
- int ocfs2_change_extent_flag(handle_t *handle,
- struct ocfs2_extent_tree *et,
- u32 cpos, u32 len, u32 phys,
- struct ocfs2_alloc_context *meta_ac,
- struct ocfs2_cached_dealloc_ctxt *dealloc,
- int new_flags, int clear_flags);
- int ocfs2_remove_extent(handle_t *handle, struct ocfs2_extent_tree *et,
- u32 cpos, u32 len,
- struct ocfs2_alloc_context *meta_ac,
- struct ocfs2_cached_dealloc_ctxt *dealloc);
- int ocfs2_remove_btree_range(struct inode *inode,
- struct ocfs2_extent_tree *et,
- u32 cpos, u32 phys_cpos, u32 len, int flags,
- struct ocfs2_cached_dealloc_ctxt *dealloc,
- u64 refcount_loc, bool refcount_tree_locked);
- int ocfs2_num_free_extents(struct ocfs2_super *osb,
- struct ocfs2_extent_tree *et);
- static inline int ocfs2_extend_meta_needed(struct ocfs2_extent_list *root_el)
- {
-
- return le16_to_cpu(root_el->l_tree_depth) + 2;
- }
- void ocfs2_dinode_new_extent_list(struct inode *inode, struct ocfs2_dinode *di);
- void ocfs2_set_inode_data_inline(struct inode *inode, struct ocfs2_dinode *di);
- int ocfs2_convert_inline_data_to_extents(struct inode *inode,
- struct buffer_head *di_bh);
- int ocfs2_truncate_log_init(struct ocfs2_super *osb);
- void ocfs2_truncate_log_shutdown(struct ocfs2_super *osb);
- void ocfs2_schedule_truncate_log_flush(struct ocfs2_super *osb,
- int cancel);
- int ocfs2_flush_truncate_log(struct ocfs2_super *osb);
- int ocfs2_begin_truncate_log_recovery(struct ocfs2_super *osb,
- int slot_num,
- struct ocfs2_dinode **tl_copy);
- int ocfs2_complete_truncate_log_recovery(struct ocfs2_super *osb,
- struct ocfs2_dinode *tl_copy);
- int ocfs2_truncate_log_needs_flush(struct ocfs2_super *osb);
- int ocfs2_truncate_log_append(struct ocfs2_super *osb,
- handle_t *handle,
- u64 start_blk,
- unsigned int num_clusters);
- int __ocfs2_flush_truncate_log(struct ocfs2_super *osb);
- int ocfs2_try_to_free_truncate_log(struct ocfs2_super *osb,
- unsigned int needed);
- struct ocfs2_cached_dealloc_ctxt {
- struct ocfs2_per_slot_free_list *c_first_suballocator;
- struct ocfs2_cached_block_free *c_global_allocator;
- };
- static inline void ocfs2_init_dealloc_ctxt(struct ocfs2_cached_dealloc_ctxt *c)
- {
- c->c_first_suballocator = NULL;
- c->c_global_allocator = NULL;
- }
- int ocfs2_cache_cluster_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
- u64 blkno, unsigned int bit);
- int ocfs2_cache_block_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
- int type, int slot, u64 suballoc, u64 blkno,
- unsigned int bit);
- static inline int ocfs2_dealloc_has_cluster(struct ocfs2_cached_dealloc_ctxt *c)
- {
- return c->c_global_allocator != NULL;
- }
- int ocfs2_run_deallocs(struct ocfs2_super *osb,
- struct ocfs2_cached_dealloc_ctxt *ctxt);
- struct ocfs2_truncate_context {
- struct ocfs2_cached_dealloc_ctxt tc_dealloc;
- int tc_ext_alloc_locked;
-
- struct buffer_head *tc_last_eb_bh;
- };
- int ocfs2_zero_range_for_truncate(struct inode *inode, handle_t *handle,
- u64 range_start, u64 range_end);
- int ocfs2_commit_truncate(struct ocfs2_super *osb,
- struct inode *inode,
- struct buffer_head *di_bh);
- int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh,
- unsigned int start, unsigned int end, int trunc);
- int ocfs2_find_leaf(struct ocfs2_caching_info *ci,
- struct ocfs2_extent_list *root_el, u32 cpos,
- struct buffer_head **leaf_bh);
- int ocfs2_search_extent_list(struct ocfs2_extent_list *el, u32 v_cluster);
- int ocfs2_trim_fs(struct super_block *sb, struct fstrim_range *range);
- static inline unsigned int ocfs2_rec_clusters(struct ocfs2_extent_list *el,
- struct ocfs2_extent_rec *rec)
- {
-
- if (el->l_tree_depth)
- return le32_to_cpu(rec->e_int_clusters);
- else
- return le16_to_cpu(rec->e_leaf_clusters);
- }
- static inline int ocfs2_is_empty_extent(struct ocfs2_extent_rec *rec)
- {
- return !rec->e_leaf_clusters;
- }
- int ocfs2_grab_pages(struct inode *inode, loff_t start, loff_t end,
- struct page **pages, int *num);
- void ocfs2_map_and_dirty_page(struct inode *inode, handle_t *handle,
- unsigned int from, unsigned int to,
- struct page *page, int zero, u64 *phys);
- struct ocfs2_path_item {
- struct buffer_head *bh;
- struct ocfs2_extent_list *el;
- };
- #define OCFS2_MAX_PATH_DEPTH 5
- struct ocfs2_path {
- int p_tree_depth;
- ocfs2_journal_access_func p_root_access;
- struct ocfs2_path_item p_node[OCFS2_MAX_PATH_DEPTH];
- };
- #define path_root_bh(_path) ((_path)->p_node[0].bh)
- #define path_root_el(_path) ((_path)->p_node[0].el)
- #define path_root_access(_path)((_path)->p_root_access)
- #define path_leaf_bh(_path) ((_path)->p_node[(_path)->p_tree_depth].bh)
- #define path_leaf_el(_path) ((_path)->p_node[(_path)->p_tree_depth].el)
- #define path_num_items(_path) ((_path)->p_tree_depth + 1)
- void ocfs2_reinit_path(struct ocfs2_path *path, int keep_root);
- void ocfs2_free_path(struct ocfs2_path *path);
- int ocfs2_find_path(struct ocfs2_caching_info *ci,
- struct ocfs2_path *path,
- u32 cpos);
- struct ocfs2_path *ocfs2_new_path_from_path(struct ocfs2_path *path);
- struct ocfs2_path *ocfs2_new_path_from_et(struct ocfs2_extent_tree *et);
- int ocfs2_path_bh_journal_access(handle_t *handle,
- struct ocfs2_caching_info *ci,
- struct ocfs2_path *path,
- int idx);
- int ocfs2_journal_access_path(struct ocfs2_caching_info *ci,
- handle_t *handle,
- struct ocfs2_path *path);
- int ocfs2_find_cpos_for_right_leaf(struct super_block *sb,
- struct ocfs2_path *path, u32 *cpos);
- int ocfs2_find_cpos_for_left_leaf(struct super_block *sb,
- struct ocfs2_path *path, u32 *cpos);
- int ocfs2_find_subtree_root(struct ocfs2_extent_tree *et,
- struct ocfs2_path *left,
- struct ocfs2_path *right);
- #endif /* OCFS2_ALLOC_H */
|