diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/btrfs/btrfs_inode.h')
| -rw-r--r-- | ANDROID_3.4.5/fs/btrfs/btrfs_inode.h | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/ANDROID_3.4.5/fs/btrfs/btrfs_inode.h b/ANDROID_3.4.5/fs/btrfs/btrfs_inode.h deleted file mode 100644 index 9b9b15fd..00000000 --- a/ANDROID_3.4.5/fs/btrfs/btrfs_inode.h +++ /dev/null @@ -1,205 +0,0 @@ -/* - * Copyright (C) 2007 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 __BTRFS_I__ -#define __BTRFS_I__ - -#include "extent_map.h" -#include "extent_io.h" -#include "ordered-data.h" -#include "delayed-inode.h" - -/* in memory btrfs inode */ -struct btrfs_inode { - /* which subvolume this inode belongs to */ - struct btrfs_root *root; - - /* key used to find this inode on disk. This is used by the code - * to read in roots of subvolumes - */ - struct btrfs_key location; - - /* Lock for counters */ - spinlock_t lock; - - /* the extent_tree has caches of all the extent mappings to disk */ - struct extent_map_tree extent_tree; - - /* the io_tree does range state (DIRTY, LOCKED etc) */ - struct extent_io_tree io_tree; - - /* special utility tree used to record which mirrors have already been - * tried when checksums fail for a given block - */ - struct extent_io_tree io_failure_tree; - - /* held while logging the inode in tree-log.c */ - struct mutex log_mutex; - - /* held while doing delalloc reservations */ - struct mutex delalloc_mutex; - - /* used to order data wrt metadata */ - struct btrfs_ordered_inode_tree ordered_tree; - - /* for keeping track of orphaned inodes */ - struct list_head i_orphan; - - /* list of all the delalloc inodes in the FS. There are times we need - * to write all the delalloc pages to disk, and this list is used - * to walk them all. - */ - struct list_head delalloc_inodes; - - /* - * list for tracking inodes that must be sent to disk before a - * rename or truncate commit - */ - struct list_head ordered_operations; - - /* node for the red-black tree that links inodes in subvolume root */ - struct rb_node rb_node; - - /* the space_info for where this inode's data allocations are done */ - struct btrfs_space_info *space_info; - - /* full 64 bit generation number, struct vfs_inode doesn't have a big - * enough field for this. - */ - u64 generation; - - /* sequence number for NFS changes */ - u64 sequence; - - /* - * transid of the trans_handle that last modified this inode - */ - u64 last_trans; - - /* - * log transid when this inode was last modified - */ - u64 last_sub_trans; - - /* - * transid that last logged this inode - */ - u64 logged_trans; - - /* total number of bytes pending delalloc, used by stat to calc the - * real block usage of the file - */ - u64 delalloc_bytes; - - /* - * the size of the file stored in the metadata on disk. data=ordered - * means the in-memory i_size might be larger than the size on disk - * because not all the blocks are written yet. - */ - u64 disk_i_size; - - /* - * if this is a directory then index_cnt is the counter for the index - * number for new files that are created - */ - u64 index_cnt; - - /* the fsync log has some corner cases that mean we have to check - * directories to see if any unlinks have been done before - * the directory was logged. See tree-log.c for all the - * details - */ - u64 last_unlink_trans; - - /* - * Number of bytes outstanding that are going to need csums. This is - * used in ENOSPC accounting. - */ - u64 csum_bytes; - - /* flags field from the on disk inode */ - u32 flags; - - /* - * Counters to keep track of the number of extent item's we may use due - * to delalloc and such. outstanding_extents is the number of extent - * items we think we'll end up using, and reserved_extents is the number - * of extent items we've reserved metadata for. - */ - unsigned outstanding_extents; - unsigned reserved_extents; - - /* - * ordered_data_close is set by truncate when a file that used - * to have good data has been truncated to zero. When it is set - * the btrfs file release call will add this inode to the - * ordered operations list so that we make sure to flush out any - * new data the application may have written before commit. - */ - unsigned ordered_data_close:1; - unsigned orphan_meta_reserved:1; - unsigned dummy_inode:1; - unsigned in_defrag:1; - unsigned delalloc_meta_reserved:1; - - /* - * always compress this one file - */ - unsigned force_compress:4; - - struct btrfs_delayed_node *delayed_node; - - struct inode vfs_inode; -}; - -extern unsigned char btrfs_filetype_table[]; - -static inline struct btrfs_inode *BTRFS_I(struct inode *inode) -{ - return container_of(inode, struct btrfs_inode, vfs_inode); -} - -static inline u64 btrfs_ino(struct inode *inode) -{ - u64 ino = BTRFS_I(inode)->location.objectid; - - /* - * !ino: btree_inode - * type == BTRFS_ROOT_ITEM_KEY: subvol dir - */ - if (!ino || BTRFS_I(inode)->location.type == BTRFS_ROOT_ITEM_KEY) - ino = inode->i_ino; - return ino; -} - -static inline void btrfs_i_size_write(struct inode *inode, u64 size) -{ - i_size_write(inode, size); - BTRFS_I(inode)->disk_i_size = size; -} - -static inline bool btrfs_is_free_space_inode(struct btrfs_root *root, - struct inode *inode) -{ - if (root == root->fs_info->tree_root || - BTRFS_I(inode)->location.objectid == BTRFS_FREE_INO_OBJECTID) - return true; - return false; -} - -#endif |