mirror of https://gitee.com/openkylin/linux.git
87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
/* 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;
|
|
int io_err;
|
|
bool log_new_dentries;
|
|
struct inode *inode;
|
|
struct list_head list;
|
|
};
|
|
|
|
static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx,
|
|
struct inode *inode)
|
|
{
|
|
ctx->log_ret = 0;
|
|
ctx->log_transid = 0;
|
|
ctx->io_err = 0;
|
|
ctx->log_new_dentries = false;
|
|
ctx->inode = inode;
|
|
INIT_LIST_HEAD(&ctx->list);
|
|
}
|
|
|
|
static inline void btrfs_set_log_full_commit(struct btrfs_fs_info *fs_info,
|
|
struct btrfs_trans_handle *trans)
|
|
{
|
|
WRITE_ONCE(fs_info->last_trans_log_full_commit, trans->transid);
|
|
}
|
|
|
|
static inline int btrfs_need_log_full_commit(struct btrfs_fs_info *fs_info,
|
|
struct btrfs_trans_handle *trans)
|
|
{
|
|
return READ_ONCE(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,
|
|
const loff_t start,
|
|
const loff_t end,
|
|
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);
|
|
/* Return values for btrfs_log_new_name() */
|
|
enum {
|
|
BTRFS_DONT_NEED_TRANS_COMMIT,
|
|
BTRFS_NEED_TRANS_COMMIT,
|
|
BTRFS_DONT_NEED_LOG_SYNC,
|
|
BTRFS_NEED_LOG_SYNC,
|
|
};
|
|
int btrfs_log_new_name(struct btrfs_trans_handle *trans,
|
|
struct btrfs_inode *inode, struct btrfs_inode *old_dir,
|
|
struct dentry *parent,
|
|
bool sync_log, struct btrfs_log_ctx *ctx);
|
|
|
|
#endif
|