diff options
Diffstat (limited to 'kernel/fs/btrfs/tree-log.h')
| -rw-r--r-- | kernel/fs/btrfs/tree-log.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/kernel/fs/btrfs/tree-log.h b/kernel/fs/btrfs/tree-log.h new file mode 100644 index 000000000..6916a781e --- /dev/null +++ b/kernel/fs/btrfs/tree-log.h @@ -0,0 +1,85 @@ +/* + * Copyright (C) 2008 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 __TREE_LOG_ +#define __TREE_LOG_ + +#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 list_head list; +}; + +static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx) +{ + ctx->log_ret = 0; + ctx->log_transid = 0; + ctx->io_err = 0; + ctx->log_new_dentries = false; + INIT_LIST_HEAD(&ctx->list); +} + +static inline void btrfs_set_log_full_commit(struct btrfs_fs_info *fs_info, + struct btrfs_trans_handle *trans) +{ + ACCESS_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 ACCESS_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 btrfs_root *root, 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 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 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 inode *dir, struct inode *inode, + int for_rename); +int btrfs_log_new_name(struct btrfs_trans_handle *trans, + struct inode *inode, struct inode *old_dir, + struct dentry *parent); +#endif |