1 /* 2 * Copyright (C) 2007 Oracle. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public 6 * License v2 as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 11 * General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public 14 * License along with this program; if not, write to the 15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 16 * Boston, MA 021110-1307, USA. 17 */ 18 19 #ifndef __BTRFS_I__ 20 #define __BTRFS_I__ 21 22 #include "extent_map.h" 23 #include "extent_io.h" 24 #include "ordered-data.h" 25 26 /* in memory btrfs inode */ 27 struct btrfs_inode { 28 struct btrfs_root *root; 29 struct btrfs_block_group_cache *block_group; 30 struct btrfs_key location; 31 struct extent_map_tree extent_tree; 32 struct extent_io_tree io_tree; 33 struct extent_io_tree io_failure_tree; 34 struct mutex csum_mutex; 35 struct mutex extent_mutex; 36 struct inode vfs_inode; 37 struct btrfs_ordered_inode_tree ordered_tree; 38 39 struct posix_acl *i_acl; 40 struct posix_acl *i_default_acl; 41 42 /* for keeping track of orphaned inodes */ 43 struct list_head i_orphan; 44 45 /* 46 * transid of the trans_handle that last modified this inode 47 */ 48 u64 last_trans; 49 u64 delalloc_bytes; 50 u64 disk_i_size; 51 u32 flags; 52 53 /* 54 * if this is a directory then index_cnt is the counter for the index 55 * number for new files that are created 56 */ 57 u64 index_cnt; 58 59 /* 60 * index holds the directory index for this inode on creation, so 61 * add_link can do what its supposed to. This isn't populated when the 62 * inode is read because there isn't really a reason to know this unless 63 * we are creating the directory index or deleting it, and deletion 64 * reads the index off of the inode reference at unlink time. 65 */ 66 u64 index; 67 }; 68 69 static inline struct btrfs_inode *BTRFS_I(struct inode *inode) 70 { 71 return container_of(inode, struct btrfs_inode, vfs_inode); 72 } 73 74 static inline void btrfs_i_size_write(struct inode *inode, u64 size) 75 { 76 inode->i_size = size; 77 BTRFS_I(inode)->disk_i_size = size; 78 } 79 80 81 #endif 82