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Thomas Gleixner328970d2019-05-24 12:04:05 +02001/* SPDX-License-Identifier: GPL-2.0-or-later */
Mark Fashehccd979b2005-12-15 14:31:24 -08002/* -*- mode: c; c-basic-offset: 8; -*-
3 * vim: noexpandtab sw=8 ts=8 sts=0:
4 *
5 * inode.h
6 *
7 * Function prototypes
8 *
9 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
Mark Fashehccd979b2005-12-15 14:31:24 -080010 */
11
12#ifndef OCFS2_INODE_H
13#define OCFS2_INODE_H
14
Mark Fasheh83418972007-04-23 18:53:12 -070015#include "extent_map.h"
16
Mark Fashehccd979b2005-12-15 14:31:24 -080017/* OCFS2 Inode Private Data */
18struct ocfs2_inode_info
19{
20 u64 ip_blkno;
21
22 struct ocfs2_lock_res ip_rw_lockres;
Mark Fashehe63aecb62007-10-18 15:30:42 -070023 struct ocfs2_lock_res ip_inode_lockres;
Tiger Yang50008632007-03-20 16:01:38 -070024 struct ocfs2_lock_res ip_open_lockres;
Mark Fashehccd979b2005-12-15 14:31:24 -080025
26 /* protects allocation changes on this inode. */
27 struct rw_semaphore ip_alloc_sem;
28
Tiger Yangcf1d6c72008-08-18 17:11:00 +080029 /* protects extended attribute changes on this inode */
30 struct rw_semaphore ip_xattr_sem;
31
Mark Fashehccd979b2005-12-15 14:31:24 -080032 /* These fields are protected by ip_lock */
33 spinlock_t ip_lock;
34 u32 ip_open_count;
Mark Fashehccd979b2005-12-15 14:31:24 -080035 struct list_head ip_io_markers;
Goldwyn Rodrigues83fd9c72010-06-10 17:21:36 -050036 u32 ip_clusters;
Mark Fashehccd979b2005-12-15 14:31:24 -080037
Goldwyn Rodrigues83fd9c72010-06-10 17:21:36 -050038 u16 ip_dyn_features;
Mark Fasheh251b6ec2006-01-10 15:41:43 -080039 struct mutex ip_io_mutex;
Mark Fashehccd979b2005-12-15 14:31:24 -080040 u32 ip_flags; /* see below */
Herbert Poetzlca4d1472006-07-03 17:27:12 -070041 u32 ip_attr; /* inode attributes */
Mark Fashehccd979b2005-12-15 14:31:24 -080042
Ryan Ding4506cfb2016-03-25 14:21:06 -070043 /* Record unwritten extents during direct io. */
44 struct list_head ip_unwritten_list;
45
Mark Fashehccd979b2005-12-15 14:31:24 -080046 /* protected by recovery_lock. */
47 struct inode *ip_next_orphan;
48
Mark Fashehccd979b2005-12-15 14:31:24 -080049 struct ocfs2_caching_info ip_metadata_cache;
Mark Fasheh83418972007-04-23 18:53:12 -070050 struct ocfs2_extent_map ip_extent_map;
Mark Fashehccd979b2005-12-15 14:31:24 -080051 struct inode vfs_inode;
Joel Becker2b4e30f2008-09-03 20:03:41 -070052 struct jbd2_inode ip_jinode;
Tao Ma13821152009-02-25 00:53:23 +080053
Goldwyn Rodrigues83fd9c72010-06-10 17:21:36 -050054 u32 ip_dir_start_lookup;
55
Tao Ma13821152009-02-25 00:53:23 +080056 /* Only valid if the inode is the dir. */
57 u32 ip_last_used_slot;
58 u64 ip_last_used_group;
Goldwyn Rodrigues5e98d492010-06-28 10:04:32 -050059 u32 ip_dir_lock_gen;
Mark Fasheh4fe370a2009-12-07 13:15:40 -080060
61 struct ocfs2_alloc_reservation ip_la_data_resv;
Darrick J. Wong2931cdc2014-04-03 14:46:48 -070062
63 /*
64 * Transactions that contain inode's metadata needed to complete
65 * fsync and fdatasync, respectively.
66 */
67 tid_t i_sync_tid;
68 tid_t i_datasync_tid;
Jan Kara1c92ec62014-09-29 15:02:51 +020069
70 struct dquot *i_dquot[MAXQUOTAS];
Mark Fashehccd979b2005-12-15 14:31:24 -080071};
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
Mark Fashehccd979b2005-12-15 14:31:24 -080082/* Has the inode been orphaned on another node?
83 *
84 * This hints to ocfs2_drop_inode that it should clear i_nlink before
85 * continuing.
86 *
87 * We *only* set this on unlink vote from another node. If the inode
88 * was locally orphaned, then we're sure of the state and don't need
89 * to twiddle i_nlink later - it's either zero or not depending on
90 * whether our unlink succeeded. Otherwise we got this from a node
91 * whose intention was to orphan the inode, however he may have
92 * crashed, failed etc, so we let ocfs2_drop_inode zero the value and
93 * rely on ocfs2_delete_inode to sort things out under the proper
94 * cluster locks.
95 */
Jan Kara7bf619c2014-04-03 14:46:53 -070096#define OCFS2_INODE_MAYBE_ORPHANED 0x00000010
Mark Fashehccd979b2005-12-15 14:31:24 -080097/* Does someone have the file open O_DIRECT */
Jan Kara7bf619c2014-04-03 14:46:53 -070098#define OCFS2_INODE_OPEN_DIRECT 0x00000020
Li Dongyangd4cd1872010-04-22 16:11:19 +080099/* Tell the inode wipe code it's not in orphan dir */
Jan Kara7bf619c2014-04-03 14:46:53 -0700100#define OCFS2_INODE_SKIP_ORPHAN_DIR 0x00000040
Joseph Qi93d911f2015-11-05 18:44:04 -0800101/* Entry in orphan dir with 'dio-' prefix */
102#define OCFS2_INODE_DIO_ORPHAN_ENTRY 0x00000080
Mark Fashehccd979b2005-12-15 14:31:24 -0800103
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 Hellwigf5e54d62006-06-28 04:26:44 -0700112extern const struct address_space_operations ocfs2_aops;
Joel Becker6e5a3d72009-02-10 19:00:37 -0800113extern const struct ocfs2_caching_operations ocfs2_inode_caching_ops;
Mark Fashehccd979b2005-12-15 14:31:24 -0800114
Joel Becker8cb471e2009-02-10 20:00:41 -0800115static inline struct ocfs2_caching_info *INODE_CACHE(struct inode *inode)
116{
117 return &OCFS2_I(inode)->ip_metadata_cache;
118}
119
Al Viro066d92d2010-06-08 21:28:10 -0400120void ocfs2_evict_inode(struct inode *inode);
Al Viro45321ac2010-06-07 13:43:19 -0400121int ocfs2_drop_inode(struct inode *inode);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700122
123/* Flags for ocfs2_iget() */
Jan Kara5fa06132008-01-11 00:11:45 +0100124#define OCFS2_FI_FLAG_SYSFILE 0x1
125#define OCFS2_FI_FLAG_ORPHAN_RECOVERY 0x2
Gang Hea860f6e2016-03-22 14:24:24 -0700126#define OCFS2_FI_FLAG_FILECHECK_CHK 0x4
127#define OCFS2_FI_FLAG_FILECHECK_FIX 0x8
128
wengang wang6ca497a2009-03-06 21:29:10 +0800129struct inode *ocfs2_ilookup(struct super_block *sb, u64 feoff);
Jan Kara5fa06132008-01-11 00:11:45 +0100130struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags,
131 int sysfile_type);
Mark Fashehccd979b2005-12-15 14:31:24 -0800132int ocfs2_inode_revalidate(struct dentry *dentry);
Joel Beckerb657c952008-11-13 14:49:11 -0800133void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
134 int create_ino);
Mark Fashehccd979b2005-12-15 14:31:24 -0800135void 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);
Mark Fashehccd979b2005-12-15 14:31:24 -0800141
Herbert Poetzlca4d1472006-07-03 17:27:12 -0700142void ocfs2_set_inode_flags(struct inode *inode);
Jan Kara6e4b0d52007-04-27 11:08:01 -0700143void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi);
Herbert Poetzlca4d1472006-07-03 17:27:12 -0700144
Mark Fasheh8110b072007-03-22 16:53:23 -0700145static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode)
146{
147 int c_to_s_bits = OCFS2_SB(inode->i_sb)->s_clustersize_bits - 9;
148
Joseph Qi7fa05c62014-10-09 15:24:56 -0700149 return (blkcnt_t)OCFS2_I(inode)->ip_clusters << c_to_s_bits;
Mark Fasheh8110b072007-03-22 16:53:23 -0700150}
151
Joel Beckerb657c952008-11-13 14:49:11 -0800152/* Validate that a bh contains a valid inode */
153int ocfs2_validate_inode_block(struct super_block *sb,
154 struct buffer_head *bh);
155/*
156 * Read an inode block into *bh. If *bh is NULL, a bh will be allocated.
157 * This is a cached read. The inode will be validated with
158 * ocfs2_validate_inode_block().
159 */
160int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh);
161/* The same, but can be passed OCFS2_BH_* flags */
162int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh,
163 int flags);
Joel Becker6136ca52009-02-12 19:32:43 -0800164
165static inline struct ocfs2_inode_info *cache_info_to_inode(struct ocfs2_caching_info *ci)
166{
167 return container_of(ci, struct ocfs2_inode_info, ip_metadata_cache);
168}
169
Darrick J. Wong84e40082016-11-09 14:13:09 -0800170/* Does this inode have the reflink flag set? */
171static inline bool ocfs2_is_refcount_inode(struct inode *inode)
172{
173 return (OCFS2_I(inode)->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL);
174}
175
Mark Fashehccd979b2005-12-15 14:31:24 -0800176#endif /* OCFS2_INODE_H */