linux/fs/btrfs/tree-log.h
David Sterba 9888c3402c btrfs: replace GPL boilerplate by SPDX -- headers
Remove GPL boilerplate text (long, short, one-line) and keep the rest,
ie. personal, company or original source copyright statements. Add the
SPDX header.

Unify the include protection macros to match the file names.

Signed-off-by: David Sterba <dsterba@suse.com>
2018-04-12 16:29:46 +02:00

79 lines
2.4 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);
int 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);
int btrfs_log_new_name(struct btrfs_trans_handle *trans,
struct btrfs_inode *inode, struct btrfs_inode *old_dir,
struct dentry *parent);
#endif