blob: 9957810fdf85e3b712cc0eef92e9f1606b787309 [file] [log] [blame]
Mark Fashehccd979b2005-12-15 14:31:24 -08001/* -*- 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
29/* OCFS2 Inode Private Data */
30struct ocfs2_inode_info
31{
32 u64 ip_blkno;
33
34 struct ocfs2_lock_res ip_rw_lockres;
35 struct ocfs2_lock_res ip_meta_lockres;
36 struct ocfs2_lock_res ip_data_lockres;
37
38 /* protects allocation changes on this inode. */
39 struct rw_semaphore ip_alloc_sem;
40
41 /* These fields are protected by ip_lock */
42 spinlock_t ip_lock;
43 u32 ip_open_count;
44 u32 ip_clusters;
45 struct ocfs2_extent_map ip_map;
46 struct list_head ip_io_markers;
47 int ip_orphaned_slot;
48
Mark Fasheh251b6ec2006-01-10 15:41:43 -080049 struct mutex ip_io_mutex;
Mark Fashehccd979b2005-12-15 14:31:24 -080050
51 /* Used by the journalling code to attach an inode to a
Mark Fasheh251b6ec2006-01-10 15:41:43 -080052 * handle. These are protected by ip_io_mutex in order to lock
Mark Fashehccd979b2005-12-15 14:31:24 -080053 * out other I/O to the inode until we either commit or
54 * abort. */
55 struct list_head ip_handle_list;
56 struct ocfs2_journal_handle *ip_handle;
57
58 u32 ip_flags; /* see below */
Herbert Poetzlca4d1472006-07-03 17:27:12 -070059 u32 ip_attr; /* inode attributes */
Mark Fashehccd979b2005-12-15 14:31:24 -080060
61 /* protected by recovery_lock. */
62 struct inode *ip_next_orphan;
63
64 u32 ip_dir_start_lookup;
65
66 /* next two are protected by trans_inc_lock */
67 /* which transaction were we created on? Zero if none. */
68 unsigned long ip_created_trans;
69 /* last transaction we were a part of. */
70 unsigned long ip_last_trans;
71
72 struct ocfs2_caching_info ip_metadata_cache;
73
74 struct inode vfs_inode;
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
108static 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
116extern kmem_cache_t *ocfs2_inode_cache;
117
Christoph Hellwigf5e54d62006-06-28 04:26:44 -0700118extern const struct address_space_operations ocfs2_aops;
Mark Fashehccd979b2005-12-15 14:31:24 -0800119
120struct buffer_head *ocfs2_bread(struct inode *inode, int block,
121 int *err, int reada);
122void ocfs2_clear_inode(struct inode *inode);
123void ocfs2_delete_inode(struct inode *inode);
124void ocfs2_drop_inode(struct inode *inode);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700125
126/* Flags for ocfs2_iget() */
127#define OCFS2_FI_FLAG_NOWAIT 0x1
128#define OCFS2_FI_FLAG_DELETE 0x2
129#define OCFS2_FI_FLAG_SYSFILE 0x4
130#define OCFS2_FI_FLAG_NOLOCK 0x8
131struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, int flags);
Mark Fashehccd979b2005-12-15 14:31:24 -0800132struct inode *ocfs2_ilookup_for_vote(struct ocfs2_super *osb,
133 u64 blkno,
134 int delete_vote);
135int ocfs2_inode_init_private(struct inode *inode);
136int ocfs2_inode_revalidate(struct dentry *dentry);
137int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
138 int create_ino);
139void ocfs2_read_inode(struct inode *inode);
140void ocfs2_read_inode2(struct inode *inode, void *opaque);
141ssize_t ocfs2_rw_direct(int rw, struct file *filp, char *buf,
142 size_t size, loff_t *offp);
143void ocfs2_sync_blockdev(struct super_block *sb);
144void ocfs2_refresh_inode(struct inode *inode,
145 struct ocfs2_dinode *fe);
146int ocfs2_mark_inode_dirty(struct ocfs2_journal_handle *handle,
147 struct inode *inode,
148 struct buffer_head *bh);
149int ocfs2_aio_read(struct file *file, struct kiocb *req, struct iocb *iocb);
150int ocfs2_aio_write(struct file *file, struct kiocb *req, struct iocb *iocb);
151
Herbert Poetzlca4d1472006-07-03 17:27:12 -0700152void ocfs2_set_inode_flags(struct inode *inode);
153
Mark Fashehccd979b2005-12-15 14:31:24 -0800154#endif /* OCFS2_INODE_H */