91 строка
3.0 KiB
C
91 строка
3.0 KiB
C
/*
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* Copyright (C) 2008 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef __TREE_LOG_
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#define __TREE_LOG_
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#include "ctree.h"
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#include "transaction.h"
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/* return value for btrfs_log_dentry_safe that means we don't need to log it at all */
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#define BTRFS_NO_LOG_SYNC 256
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struct btrfs_log_ctx {
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int log_ret;
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int log_transid;
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int io_err;
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bool log_new_dentries;
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struct inode *inode;
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struct list_head list;
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};
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static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx,
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struct inode *inode)
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{
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ctx->log_ret = 0;
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ctx->log_transid = 0;
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ctx->io_err = 0;
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ctx->log_new_dentries = false;
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ctx->inode = inode;
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INIT_LIST_HEAD(&ctx->list);
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}
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static inline void btrfs_set_log_full_commit(struct btrfs_fs_info *fs_info,
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struct btrfs_trans_handle *trans)
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{
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WRITE_ONCE(fs_info->last_trans_log_full_commit, trans->transid);
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}
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static inline int btrfs_need_log_full_commit(struct btrfs_fs_info *fs_info,
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struct btrfs_trans_handle *trans)
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{
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return READ_ONCE(fs_info->last_trans_log_full_commit) ==
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trans->transid;
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}
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int btrfs_sync_log(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, struct btrfs_log_ctx *ctx);
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int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root);
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int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
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struct btrfs_fs_info *fs_info);
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int btrfs_recover_log_trees(struct btrfs_root *tree_root);
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int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, struct dentry *dentry,
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const loff_t start,
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const loff_t end,
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struct btrfs_log_ctx *ctx);
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int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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const char *name, int name_len,
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struct btrfs_inode *dir, u64 index);
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int btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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const char *name, int name_len,
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struct btrfs_inode *inode, u64 dirid);
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void btrfs_end_log_trans(struct btrfs_root *root);
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int btrfs_pin_log_trans(struct btrfs_root *root);
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void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans,
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struct btrfs_inode *dir, struct btrfs_inode *inode,
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int for_rename);
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void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans,
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struct btrfs_inode *dir);
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int btrfs_log_new_name(struct btrfs_trans_handle *trans,
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struct btrfs_inode *inode, struct btrfs_inode *old_dir,
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struct dentry *parent);
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#endif
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