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 "messages.h" 10 #include "ctree.h" 11 #include "transaction.h" 12 13 /* return value for btrfs_log_dentry_safe that means we don't need to log it at all */ 14 #define BTRFS_NO_LOG_SYNC 256 15 16 /* We can't use the tree log for whatever reason, force a transaction commit */ 17 #define BTRFS_LOG_FORCE_COMMIT (1) 18 19 struct btrfs_log_ctx { 20 int log_ret; 21 int log_transid; 22 bool log_new_dentries; 23 bool logging_new_name; 24 bool logging_new_delayed_dentries; 25 /* Indicate if the inode being logged was logged before. */ 26 bool logged_before; 27 struct inode *inode; 28 struct list_head list; 29 /* Only used for fast fsyncs. */ 30 struct list_head ordered_extents; 31 struct list_head conflict_inodes; 32 int num_conflict_inodes; 33 bool logging_conflict_inodes; 34 }; 35 36 static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx, 37 struct inode *inode) 38 { 39 ctx->log_ret = 0; 40 ctx->log_transid = 0; 41 ctx->log_new_dentries = false; 42 ctx->logging_new_name = false; 43 ctx->logging_new_delayed_dentries = false; 44 ctx->logged_before = false; 45 ctx->inode = inode; 46 INIT_LIST_HEAD(&ctx->list); 47 INIT_LIST_HEAD(&ctx->ordered_extents); 48 INIT_LIST_HEAD(&ctx->conflict_inodes); 49 ctx->num_conflict_inodes = 0; 50 ctx->logging_conflict_inodes = false; 51 } 52 53 static inline void btrfs_release_log_ctx_extents(struct btrfs_log_ctx *ctx) 54 { 55 struct btrfs_ordered_extent *ordered; 56 struct btrfs_ordered_extent *tmp; 57 58 ASSERT(inode_is_locked(ctx->inode)); 59 60 list_for_each_entry_safe(ordered, tmp, &ctx->ordered_extents, log_list) { 61 list_del_init(&ordered->log_list); 62 btrfs_put_ordered_extent(ordered); 63 } 64 } 65 66 static inline void btrfs_set_log_full_commit(struct btrfs_trans_handle *trans) 67 { 68 WRITE_ONCE(trans->fs_info->last_trans_log_full_commit, trans->transid); 69 } 70 71 static inline int btrfs_need_log_full_commit(struct btrfs_trans_handle *trans) 72 { 73 return READ_ONCE(trans->fs_info->last_trans_log_full_commit) == 74 trans->transid; 75 } 76 77 int btrfs_sync_log(struct btrfs_trans_handle *trans, 78 struct btrfs_root *root, struct btrfs_log_ctx *ctx); 79 int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root); 80 int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans, 81 struct btrfs_fs_info *fs_info); 82 int btrfs_recover_log_trees(struct btrfs_root *tree_root); 83 int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans, 84 struct dentry *dentry, 85 struct btrfs_log_ctx *ctx); 86 void btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans, 87 struct btrfs_root *root, 88 const struct fscrypt_str *name, 89 struct btrfs_inode *dir, u64 index); 90 void btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans, 91 struct btrfs_root *root, 92 const struct fscrypt_str *name, 93 struct btrfs_inode *inode, u64 dirid); 94 void btrfs_end_log_trans(struct btrfs_root *root); 95 void btrfs_pin_log_trans(struct btrfs_root *root); 96 void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans, 97 struct btrfs_inode *dir, struct btrfs_inode *inode, 98 int for_rename); 99 void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans, 100 struct btrfs_inode *dir); 101 void btrfs_log_new_name(struct btrfs_trans_handle *trans, 102 struct dentry *old_dentry, struct btrfs_inode *old_dir, 103 u64 old_dir_index, struct dentry *parent); 104 105 #endif 106