+/*
+ * Copyright (C) 2007 Oracle. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License v2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ */
+
#ifndef __DISKIO__
#define __DISKIO__
-struct tree_buffer {
- u64 blocknr;
- int count;
- union {
- struct node node;
- struct leaf leaf;
- };
+#include <linux/buffer_head.h>
+
+#define BTRFS_SUPER_INFO_OFFSET (16 * 1024)
+
+enum btrfs_bh_state_bits {
+ BH_Checked = BH_PrivateStart,
+ BH_Defrag,
+ BH_DefragDone,
};
+BUFFER_FNS(Checked, checked);
+BUFFER_FNS(Defrag, defrag);
+BUFFER_FNS(DefragDone, defrag_done);
+
+static inline struct btrfs_node *btrfs_buffer_node(struct buffer_head *bh)
+{
+ return (struct btrfs_node *)bh->b_data;
+}
+
+static inline struct btrfs_leaf *btrfs_buffer_leaf(struct buffer_head *bh)
+{
+ return (struct btrfs_leaf *)bh->b_data;
+}
-struct tree_buffer *read_tree_block(struct ctree_root *root, u64 blocknr);
-int write_tree_block(struct ctree_root *root, struct tree_buffer *buf);
-struct ctree_root *open_ctree(char *filename);
-int close_ctree(struct ctree_root *root);
-void tree_block_release(struct ctree_root *root, struct tree_buffer *buf);
-struct tree_buffer *alloc_free_block(struct ctree_root *root);
-int update_root_block(struct ctree_root *root);
+static inline struct btrfs_header *btrfs_buffer_header(struct buffer_head *bh)
+{
+ return &((struct btrfs_node *)bh->b_data)->header;
+}
+struct buffer_head *read_tree_block(struct btrfs_root *root, u64 blocknr);
+int readahead_tree_block(struct btrfs_root *root, u64 blocknr);
+struct buffer_head *btrfs_find_create_tree_block(struct btrfs_root *root,
+ u64 blocknr);
+int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
+ struct buffer_head *buf);
+int dirty_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
+ struct buffer_head *buf);
+int clean_tree_block(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, struct buffer_head *buf);
+int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root);
+struct btrfs_root *open_ctree(struct super_block *sb);
+int close_ctree(struct btrfs_root *root);
+void btrfs_block_release(struct btrfs_root *root, struct buffer_head *buf);
+int write_ctree_super(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root);
+struct buffer_head *btrfs_find_tree_block(struct btrfs_root *root, u64 blocknr);
+int btrfs_csum_data(struct btrfs_root * root, char *data, size_t len,
+ char *result);
+struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info,
+ struct btrfs_key *location,
+ const char *name, int namelen);
+struct btrfs_root *btrfs_read_fs_root_no_radix(struct btrfs_fs_info *fs_info,
+ struct btrfs_key *location);
+u64 bh_blocknr(struct buffer_head *bh);
+int btrfs_insert_dev_radix(struct btrfs_root *root,
+ struct block_device *bdev,
+ u64 device_id,
+ u64 block_start,
+ u64 num_blocks);
+int btrfs_map_bh_to_logical(struct btrfs_root *root, struct buffer_head *bh,
+ u64 logical);
+void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr);
+int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root);
+void btrfs_mark_buffer_dirty(struct buffer_head *bh);
#endif