/* * 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 inode *inode; struct list_head list; }; static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx, struct inode *inode) { ctx->log_ret = 0; ctx->log_transid = 0; ctx->io_err = 0; ctx->log_new_dentries = false; ctx->inode = inode; 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); void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans, struct inode *dir); int btrfs_log_new_name(struct btrfs_trans_handle *trans, struct inode *inode, struct inode *old_dir, struct dentry *parent); #endif lude/uapi/asm-generic?id=2b1d530cb3157f828fcaadd259613f59db3c6d1c'>asm-generic/shmbuf.h
AgeCommit message (Expand)AuthorFilesLines