/* SPDX-License-Identifier: GPL-2.0 */

  /*
   * Copyright (C) 2008 Oracle.  All rights reserved.

   */

  #ifndef BTRFS_TREE_LOG_H
  #define BTRFS_TREE_LOG_H

  #include "ctree.h"
  #include "transaction.h"

  /* return value for btrfs_log_dentry_safe that means we don't need to log it at all */
  #define BTRFS_NO_LOG_SYNC 256

  struct btrfs_log_ctx {
  	int log_ret;

  	int log_transid;

  	bool log_new_dentries;

  	bool logging_new_name;

  	struct inode *inode;

  	struct list_head list;

  	/* Only used for fast fsyncs. */
  	struct list_head ordered_extents;

  };

  static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx,
  				      struct inode *inode)

  {
  	ctx->log_ret = 0;

  	ctx->log_transid = 0;

  	ctx->log_new_dentries = false;

  	ctx->logging_new_name = false;

  	ctx->inode = inode;

  	INIT_LIST_HEAD(&ctx->list);

  	INIT_LIST_HEAD(&ctx->ordered_extents);
  }
  
  static inline void btrfs_release_log_ctx_extents(struct btrfs_log_ctx *ctx)
  {
  	struct btrfs_ordered_extent *ordered;
  	struct btrfs_ordered_extent *tmp;
  
  	ASSERT(inode_is_locked(ctx->inode));
  
  	list_for_each_entry_safe(ordered, tmp, &ctx->ordered_extents, log_list) {
  		list_del_init(&ordered->log_list);
  		btrfs_put_ordered_extent(ordered);
  	}

  }

  static inline void btrfs_set_log_full_commit(struct btrfs_trans_handle *trans)

  {

  	WRITE_ONCE(trans->fs_info->last_trans_log_full_commit, trans->transid);

  }

  static inline int btrfs_need_log_full_commit(struct btrfs_trans_handle *trans)

  {

  	return READ_ONCE(trans->fs_info->last_trans_log_full_commit) ==

  		trans->transid;
  }

  int btrfs_sync_log(struct btrfs_trans_handle *trans,

  		   struct btrfs_root *root, struct btrfs_log_ctx *ctx);

  int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root);

  int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
  			     struct btrfs_fs_info *fs_info);

  int btrfs_recover_log_trees(struct btrfs_root *tree_root);
  int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans,

  			  struct dentry *dentry,

  			  struct btrfs_log_ctx *ctx);

  int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans,
  				 struct btrfs_root *root,
  				 const char *name, int name_len,

  				 struct btrfs_inode *dir, u64 index);

  int btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
  			       struct btrfs_root *root,
  			       const char *name, int name_len,

  			       struct btrfs_inode *inode, u64 dirid);

  void btrfs_end_log_trans(struct btrfs_root *root);

  void btrfs_pin_log_trans(struct btrfs_root *root);

  void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans,

  			     struct btrfs_inode *dir, struct btrfs_inode *inode,

  			     int for_rename);

  void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans,

  				   struct btrfs_inode *dir);

  void btrfs_log_new_name(struct btrfs_trans_handle *trans,

  			struct btrfs_inode *inode, struct btrfs_inode *old_dir,

  			struct dentry *parent);

  #endif