Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1 | /* -*- mode: c; c-basic-offset: 8; -*- |
| 2 | * vim: noexpandtab sw=8 ts=8 sts=0: |
| 3 | * |
| 4 | * inode.h |
| 5 | * |
| 6 | * Function prototypes |
| 7 | * |
| 8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or |
| 11 | * modify it under the terms of the GNU General Public |
| 12 | * License as published by the Free Software Foundation; either |
| 13 | * version 2 of the License, or (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 18 | * General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public |
| 21 | * License along with this program; if not, write to the |
| 22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 23 | * Boston, MA 021110-1307, USA. |
| 24 | */ |
| 25 | |
| 26 | #ifndef OCFS2_INODE_H |
| 27 | #define OCFS2_INODE_H |
| 28 | |
Mark Fasheh | 8341897 | 2007-04-23 18:53:12 -0700 | [diff] [blame] | 29 | #include "extent_map.h" |
| 30 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 31 | /* OCFS2 Inode Private Data */ |
| 32 | struct ocfs2_inode_info |
| 33 | { |
| 34 | u64 ip_blkno; |
| 35 | |
| 36 | struct ocfs2_lock_res ip_rw_lockres; |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 37 | struct ocfs2_lock_res ip_inode_lockres; |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 38 | struct ocfs2_lock_res ip_open_lockres; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 39 | |
| 40 | /* protects allocation changes on this inode. */ |
| 41 | struct rw_semaphore ip_alloc_sem; |
| 42 | |
Tiger Yang | cf1d6c7 | 2008-08-18 17:11:00 +0800 | [diff] [blame] | 43 | /* protects extended attribute changes on this inode */ |
| 44 | struct rw_semaphore ip_xattr_sem; |
| 45 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 46 | /* These fields are protected by ip_lock */ |
| 47 | spinlock_t ip_lock; |
| 48 | u32 ip_open_count; |
| 49 | u32 ip_clusters; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 50 | struct list_head ip_io_markers; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 51 | |
Mark Fasheh | 251b6ec | 2006-01-10 15:41:43 -0800 | [diff] [blame] | 52 | struct mutex ip_io_mutex; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 53 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 54 | u32 ip_flags; /* see below */ |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 55 | u32 ip_attr; /* inode attributes */ |
Mark Fasheh | 15b1e36 | 2007-09-07 13:58:15 -0700 | [diff] [blame] | 56 | u16 ip_dyn_features; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 57 | |
| 58 | /* protected by recovery_lock. */ |
| 59 | struct inode *ip_next_orphan; |
| 60 | |
| 61 | u32 ip_dir_start_lookup; |
| 62 | |
| 63 | /* next two are protected by trans_inc_lock */ |
| 64 | /* which transaction were we created on? Zero if none. */ |
| 65 | unsigned long ip_created_trans; |
| 66 | /* last transaction we were a part of. */ |
| 67 | unsigned long ip_last_trans; |
| 68 | |
| 69 | struct ocfs2_caching_info ip_metadata_cache; |
| 70 | |
Mark Fasheh | 8341897 | 2007-04-23 18:53:12 -0700 | [diff] [blame] | 71 | struct ocfs2_extent_map ip_extent_map; |
| 72 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 73 | struct inode vfs_inode; |
Joel Becker | 2b4e30f | 2008-09-03 20:03:41 -0700 | [diff] [blame] | 74 | struct jbd2_inode ip_jinode; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 75 | }; |
| 76 | |
| 77 | /* |
| 78 | * Flags for the ip_flags field |
| 79 | */ |
| 80 | /* System file inodes */ |
| 81 | #define OCFS2_INODE_SYSTEM_FILE 0x00000001 |
| 82 | #define OCFS2_INODE_JOURNAL 0x00000002 |
| 83 | #define OCFS2_INODE_BITMAP 0x00000004 |
| 84 | /* This inode has been wiped from disk */ |
| 85 | #define OCFS2_INODE_DELETED 0x00000008 |
| 86 | /* Another node is deleting, so our delete is a nop */ |
| 87 | #define OCFS2_INODE_SKIP_DELETE 0x00000010 |
| 88 | /* Has the inode been orphaned on another node? |
| 89 | * |
| 90 | * This hints to ocfs2_drop_inode that it should clear i_nlink before |
| 91 | * continuing. |
| 92 | * |
| 93 | * We *only* set this on unlink vote from another node. If the inode |
| 94 | * was locally orphaned, then we're sure of the state and don't need |
| 95 | * to twiddle i_nlink later - it's either zero or not depending on |
| 96 | * whether our unlink succeeded. Otherwise we got this from a node |
| 97 | * whose intention was to orphan the inode, however he may have |
| 98 | * crashed, failed etc, so we let ocfs2_drop_inode zero the value and |
| 99 | * rely on ocfs2_delete_inode to sort things out under the proper |
| 100 | * cluster locks. |
| 101 | */ |
| 102 | #define OCFS2_INODE_MAYBE_ORPHANED 0x00000020 |
| 103 | /* Does someone have the file open O_DIRECT */ |
| 104 | #define OCFS2_INODE_OPEN_DIRECT 0x00000040 |
| 105 | /* Indicates that the metadata cache should be used as an array. */ |
| 106 | #define OCFS2_INODE_CACHE_INLINE 0x00000080 |
| 107 | |
| 108 | static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode) |
| 109 | { |
| 110 | return container_of(inode, struct ocfs2_inode_info, vfs_inode); |
| 111 | } |
| 112 | |
| 113 | #define INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags & OCFS2_INODE_JOURNAL) |
| 114 | #define SET_INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags |= OCFS2_INODE_JOURNAL) |
| 115 | |
Christoph Lameter | e18b890 | 2006-12-06 20:33:20 -0800 | [diff] [blame] | 116 | extern struct kmem_cache *ocfs2_inode_cache; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 117 | |
Christoph Hellwig | f5e54d6 | 2006-06-28 04:26:44 -0700 | [diff] [blame] | 118 | extern const struct address_space_operations ocfs2_aops; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 119 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 120 | void ocfs2_clear_inode(struct inode *inode); |
| 121 | void ocfs2_delete_inode(struct inode *inode); |
| 122 | void ocfs2_drop_inode(struct inode *inode); |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 123 | |
| 124 | /* Flags for ocfs2_iget() */ |
Jan Kara | 5fa0613 | 2008-01-11 00:11:45 +0100 | [diff] [blame] | 125 | #define OCFS2_FI_FLAG_SYSFILE 0x1 |
| 126 | #define OCFS2_FI_FLAG_ORPHAN_RECOVERY 0x2 |
| 127 | struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags, |
| 128 | int sysfile_type); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 129 | int ocfs2_inode_init_private(struct inode *inode); |
| 130 | int ocfs2_inode_revalidate(struct dentry *dentry); |
Joel Becker | b657c95 | 2008-11-13 14:49:11 -0800 | [diff] [blame] | 131 | void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, |
| 132 | int create_ino); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 133 | void ocfs2_read_inode(struct inode *inode); |
| 134 | void ocfs2_read_inode2(struct inode *inode, void *opaque); |
| 135 | ssize_t ocfs2_rw_direct(int rw, struct file *filp, char *buf, |
| 136 | size_t size, loff_t *offp); |
| 137 | void ocfs2_sync_blockdev(struct super_block *sb); |
| 138 | void ocfs2_refresh_inode(struct inode *inode, |
| 139 | struct ocfs2_dinode *fe); |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 140 | int ocfs2_mark_inode_dirty(handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 141 | struct inode *inode, |
| 142 | struct buffer_head *bh); |
| 143 | int ocfs2_aio_read(struct file *file, struct kiocb *req, struct iocb *iocb); |
| 144 | int ocfs2_aio_write(struct file *file, struct kiocb *req, struct iocb *iocb); |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 145 | struct buffer_head *ocfs2_bread(struct inode *inode, |
| 146 | int block, int *err, int reada); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 147 | |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 148 | void ocfs2_set_inode_flags(struct inode *inode); |
Jan Kara | 6e4b0d5 | 2007-04-27 11:08:01 -0700 | [diff] [blame] | 149 | void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi); |
Herbert Poetzl | ca4d147 | 2006-07-03 17:27:12 -0700 | [diff] [blame] | 150 | |
Mark Fasheh | 8110b07 | 2007-03-22 16:53:23 -0700 | [diff] [blame] | 151 | static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode) |
| 152 | { |
| 153 | int c_to_s_bits = OCFS2_SB(inode->i_sb)->s_clustersize_bits - 9; |
| 154 | |
| 155 | return (blkcnt_t)(OCFS2_I(inode)->ip_clusters << c_to_s_bits); |
| 156 | } |
| 157 | |
Joel Becker | b657c95 | 2008-11-13 14:49:11 -0800 | [diff] [blame] | 158 | /* Validate that a bh contains a valid inode */ |
| 159 | int ocfs2_validate_inode_block(struct super_block *sb, |
| 160 | struct buffer_head *bh); |
| 161 | /* |
| 162 | * Read an inode block into *bh. If *bh is NULL, a bh will be allocated. |
| 163 | * This is a cached read. The inode will be validated with |
| 164 | * ocfs2_validate_inode_block(). |
| 165 | */ |
| 166 | int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh); |
| 167 | /* The same, but can be passed OCFS2_BH_* flags */ |
| 168 | int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh, |
| 169 | int flags); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 170 | #endif /* OCFS2_INODE_H */ |