tree-log.h | Explore in Territory

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (C) 2008 Oracle.  All rights reserved.
 */

#ifndef BTRFS_TREE_LOG_H
#define BTRFS_TREE_LOG_H

#include <linux/list.h>
#include <linux/fs.h>
#include "messages.h"
#include "ctree.h"
#include "transaction.h"

struct inode;
struct dentry;
struct btrfs_ordered_extent;
struct btrfs_root;
struct btrfs_trans_handle;

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

/*
 * We can't use the tree log for whatever reason, force a transaction commit.
 * We use a negative value because there are functions through the logging code
 * that need to return an error (< 0 value), false (0) or true (1). Any negative
 * value will do, as it will cause the log to be marked for a full sync.
 */
#define BTRFS_LOG_FORCE_COMMIT …

struct btrfs_log_ctx { … };

void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx, struct btrfs_inode *inode);
void btrfs_init_log_ctx_scratch_eb(struct btrfs_log_ctx *ctx);
void btrfs_release_log_ctx_extents(struct btrfs_log_ctx *ctx);

static inline void btrfs_set_log_full_commit(struct btrfs_trans_handle *trans)
{ … }

static inline int btrfs_need_log_full_commit(struct btrfs_trans_handle *trans)
{ … }

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);
void btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans,
				  struct btrfs_root *root,
				  const struct fscrypt_str *name,
				  struct btrfs_inode *dir, u64 index);
void btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
				struct btrfs_root *root,
				const struct fscrypt_str *name,
				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,
			     bool for_rename);
void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans,
				   struct btrfs_inode *dir);
void btrfs_record_new_subvolume(const struct btrfs_trans_handle *trans,
				struct btrfs_inode *dir);
void btrfs_log_new_name(struct btrfs_trans_handle *trans,
			struct dentry *old_dentry, struct btrfs_inode *old_dir,
			u64 old_dir_index, struct dentry *parent);

#endif
linux/fs/btrfs/tree-log.h
