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 bool log_new_dentries; 19 bool logging_new_name; 20 struct inode *inode; 21 struct list_head list; 22 /* Only used for fast fsyncs. */ 23 struct list_head ordered_extents; 24 }; 25 26 static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx, 27 struct inode *inode) 28 { 29 ctx->log_ret = 0; 30 ctx->log_transid = 0; 31 ctx->log_new_dentries = false; 32 ctx->logging_new_name = false; 33 ctx->inode = inode; 34 INIT_LIST_HEAD(&ctx->list); 35 INIT_LIST_HEAD(&ctx->ordered_extents); 36 } 37 38 static inline void btrfs_release_log_ctx_extents(struct btrfs_log_ctx *ctx) 39 { 40 struct btrfs_ordered_extent *ordered; 41 struct btrfs_ordered_extent *tmp; 42 43 ASSERT(inode_is_locked(ctx->inode)); 44 45 list_for_each_entry_safe(ordered, tmp, &ctx->ordered_extents, log_list) { 46 list_del_init(&ordered->log_list); 47 btrfs_put_ordered_extent(ordered); 48 } 49 } 50 51 static inline void btrfs_set_log_full_commit(struct btrfs_trans_handle *trans) 52 { 53 WRITE_ONCE(trans->fs_info->last_trans_log_full_commit, trans->transid); 54 } 55 56 static inline int btrfs_need_log_full_commit(struct btrfs_trans_handle *trans) 57 { 58 return READ_ONCE(trans->fs_info->last_trans_log_full_commit) == 59 trans->transid; 60 } 61 62 int btrfs_sync_log(struct btrfs_trans_handle *trans, 63 struct btrfs_root *root, struct btrfs_log_ctx *ctx); 64 int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root); 65 int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans, 66 struct btrfs_fs_info *fs_info); 67 int btrfs_recover_log_trees(struct btrfs_root *tree_root); 68 int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans, 69 struct dentry *dentry, 70 struct btrfs_log_ctx *ctx); 71 int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans, 72 struct btrfs_root *root, 73 const char *name, int name_len, 74 struct btrfs_inode *dir, u64 index); 75 int btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans, 76 struct btrfs_root *root, 77 const char *name, int name_len, 78 struct btrfs_inode *inode, u64 dirid); 79 void btrfs_end_log_trans(struct btrfs_root *root); 80 void btrfs_pin_log_trans(struct btrfs_root *root); 81 void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans, 82 struct btrfs_inode *dir, struct btrfs_inode *inode, 83 int for_rename); 84 void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans, 85 struct btrfs_inode *dir); 86 void btrfs_log_new_name(struct btrfs_trans_handle *trans, 87 struct dentry *old_dentry, struct btrfs_inode *old_dir, 88 struct dentry *parent); 89 90 #endif 91