blob: 390a85596aa01841a5546e9464aa7a24cfcc23ea [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
Mark Fasheh83418972007-04-23 18:53:12 -070029#include "extent_map.h"
30
Mark Fashehccd979b2005-12-15 14:31:24 -080031/* OCFS2 Inode Private Data */
32struct ocfs2_inode_info
33{
34 u64 ip_blkno;
35
36 struct ocfs2_lock_res ip_rw_lockres;
Mark Fashehe63aecb62007-10-18 15:30:42 -070037 struct ocfs2_lock_res ip_inode_lockres;
Tiger Yang50008632007-03-20 16:01:38 -070038 struct ocfs2_lock_res ip_open_lockres;
Mark Fashehccd979b2005-12-15 14:31:24 -080039
40 /* protects allocation changes on this inode. */
41 struct rw_semaphore ip_alloc_sem;
42
43 /* These fields are protected by ip_lock */
44 spinlock_t ip_lock;
45 u32 ip_open_count;
46 u32 ip_clusters;
Mark Fashehccd979b2005-12-15 14:31:24 -080047 struct list_head ip_io_markers;
Mark Fashehccd979b2005-12-15 14:31:24 -080048
Mark Fasheh251b6ec2006-01-10 15:41:43 -080049 struct mutex ip_io_mutex;
Mark Fashehccd979b2005-12-15 14:31:24 -080050
Mark Fashehccd979b2005-12-15 14:31:24 -080051 u32 ip_flags; /* see below */
Herbert Poetzlca4d1472006-07-03 17:27:12 -070052 u32 ip_attr; /* inode attributes */
Mark Fasheh15b1e362007-09-07 13:58:15 -070053 u16 ip_dyn_features;
Mark Fashehccd979b2005-12-15 14:31:24 -080054
55 /* protected by recovery_lock. */
56 struct inode *ip_next_orphan;
57
58 u32 ip_dir_start_lookup;
59
60 /* next two are protected by trans_inc_lock */
61 /* which transaction were we created on? Zero if none. */
62 unsigned long ip_created_trans;
63 /* last transaction we were a part of. */
64 unsigned long ip_last_trans;
65
66 struct ocfs2_caching_info ip_metadata_cache;
67
Mark Fasheh83418972007-04-23 18:53:12 -070068 struct ocfs2_extent_map ip_extent_map;
69
Mark Fashehccd979b2005-12-15 14:31:24 -080070 struct inode vfs_inode;
71};
72
73/*
74 * Flags for the ip_flags field
75 */
76/* System file inodes */
77#define OCFS2_INODE_SYSTEM_FILE 0x00000001
78#define OCFS2_INODE_JOURNAL 0x00000002
79#define OCFS2_INODE_BITMAP 0x00000004
80/* This inode has been wiped from disk */
81#define OCFS2_INODE_DELETED 0x00000008
82/* Another node is deleting, so our delete is a nop */
83#define OCFS2_INODE_SKIP_DELETE 0x00000010
84/* Has the inode been orphaned on another node?
85 *
86 * This hints to ocfs2_drop_inode that it should clear i_nlink before
87 * continuing.
88 *
89 * We *only* set this on unlink vote from another node. If the inode
90 * was locally orphaned, then we're sure of the state and don't need
91 * to twiddle i_nlink later - it's either zero or not depending on
92 * whether our unlink succeeded. Otherwise we got this from a node
93 * whose intention was to orphan the inode, however he may have
94 * crashed, failed etc, so we let ocfs2_drop_inode zero the value and
95 * rely on ocfs2_delete_inode to sort things out under the proper
96 * cluster locks.
97 */
98#define OCFS2_INODE_MAYBE_ORPHANED 0x00000020
99/* Does someone have the file open O_DIRECT */
100#define OCFS2_INODE_OPEN_DIRECT 0x00000040
101/* Indicates that the metadata cache should be used as an array. */
102#define OCFS2_INODE_CACHE_INLINE 0x00000080
103
104static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode)
105{
106 return container_of(inode, struct ocfs2_inode_info, vfs_inode);
107}
108
109#define INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags & OCFS2_INODE_JOURNAL)
110#define SET_INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags |= OCFS2_INODE_JOURNAL)
111
Christoph Lametere18b8902006-12-06 20:33:20 -0800112extern struct kmem_cache *ocfs2_inode_cache;
Mark Fashehccd979b2005-12-15 14:31:24 -0800113
Christoph Hellwigf5e54d62006-06-28 04:26:44 -0700114extern const struct address_space_operations ocfs2_aops;
Mark Fashehccd979b2005-12-15 14:31:24 -0800115
116struct buffer_head *ocfs2_bread(struct inode *inode, int block,
117 int *err, int reada);
118void ocfs2_clear_inode(struct inode *inode);
119void ocfs2_delete_inode(struct inode *inode);
120void ocfs2_drop_inode(struct inode *inode);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700121
122/* Flags for ocfs2_iget() */
Jan Kara5fa06132008-01-11 00:11:45 +0100123#define OCFS2_FI_FLAG_SYSFILE 0x1
124#define OCFS2_FI_FLAG_ORPHAN_RECOVERY 0x2
125struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags,
126 int sysfile_type);
Mark Fashehccd979b2005-12-15 14:31:24 -0800127int ocfs2_inode_init_private(struct inode *inode);
128int ocfs2_inode_revalidate(struct dentry *dentry);
129int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
130 int create_ino);
131void ocfs2_read_inode(struct inode *inode);
132void ocfs2_read_inode2(struct inode *inode, void *opaque);
133ssize_t ocfs2_rw_direct(int rw, struct file *filp, char *buf,
134 size_t size, loff_t *offp);
135void ocfs2_sync_blockdev(struct super_block *sb);
136void ocfs2_refresh_inode(struct inode *inode,
137 struct ocfs2_dinode *fe);
Mark Fasheh1fabe142006-10-09 18:11:45 -0700138int ocfs2_mark_inode_dirty(handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -0800139 struct inode *inode,
140 struct buffer_head *bh);
141int ocfs2_aio_read(struct file *file, struct kiocb *req, struct iocb *iocb);
142int ocfs2_aio_write(struct file *file, struct kiocb *req, struct iocb *iocb);
143
Herbert Poetzlca4d1472006-07-03 17:27:12 -0700144void ocfs2_set_inode_flags(struct inode *inode);
Jan Kara6e4b0d52007-04-27 11:08:01 -0700145void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi);
Herbert Poetzlca4d1472006-07-03 17:27:12 -0700146
Mark Fasheh8110b072007-03-22 16:53:23 -0700147static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode)
148{
149 int c_to_s_bits = OCFS2_SB(inode->i_sb)->s_clustersize_bits - 9;
150
151 return (blkcnt_t)(OCFS2_I(inode)->ip_clusters << c_to_s_bits);
152}
153
Mark Fashehccd979b2005-12-15 14:31:24 -0800154#endif /* OCFS2_INODE_H */