1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2008 Oracle. All rights reserved. 4 */ 5 6 #ifndef BTRFS_TREE_LOG_H 7 #define BTRFS_TREE_LOG_H 8 9 #include "ctree.h" 10 #include "transaction.h" 11 12 /* return value for btrfs_log_dentry_safe that means we don't need to log it at all */ 13 #define BTRFS_NO_LOG_SYNC 256 14 15 struct btrfs_log_ctx { 16 int log_ret; 17 int log_transid; 18 int io_err; 19 bool log_new_dentries; 20 struct inode *inode; 21 struct list_head list; 22 }; 23 24 static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx, 25 struct inode *inode) 26 { 27 ctx->log_ret = 0; 28 ctx->log_transid = 0; 29 ctx->io_err = 0; 30 ctx->log_new_dentries = false; 31 ctx->inode = inode; 32 INIT_LIST_HEAD(&ctx->list); 33 } 34 35 static inline void btrfs_set_log_full_commit(struct btrfs_fs_info *fs_info, 36 struct btrfs_trans_handle *trans) 37 { 38 WRITE_ONCE(fs_info->last_trans_log_full_commit, trans->transid); 39 } 40 41 static inline int btrfs_need_log_full_commit(struct btrfs_fs_info *fs_info, 42 struct btrfs_trans_handle *trans) 43 { 44 return READ_ONCE(fs_info->last_trans_log_full_commit) == 45 trans->transid; 46 } 47 48 int btrfs_sync_log(struct btrfs_trans_handle *trans, 49 struct btrfs_root *root, struct btrfs_log_ctx *ctx); 50 int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root); 51 int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans, 52 struct btrfs_fs_info *fs_info); 53 int btrfs_recover_log_trees(struct btrfs_root *tree_root); 54 int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans, 55 struct dentry *dentry, 56 const loff_t start, 57 const loff_t end, 58 struct btrfs_log_ctx *ctx); 59 int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans, 60 struct btrfs_root *root, 61 const char *name, int name_len, 62 struct btrfs_inode *dir, u64 index); 63 int btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans, 64 struct btrfs_root *root, 65 const char *name, int name_len, 66 struct btrfs_inode *inode, u64 dirid); 67 void btrfs_end_log_trans(struct btrfs_root *root); 68 int btrfs_pin_log_trans(struct btrfs_root *root); 69 void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans, 70 struct btrfs_inode *dir, struct btrfs_inode *inode, 71 int for_rename); 72 void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans, 73 struct btrfs_inode *dir); 74 int btrfs_log_new_name(struct btrfs_trans_handle *trans, 75 struct btrfs_inode *inode, struct btrfs_inode *old_dir, 76 struct dentry *parent); 77 78 #endif 79