1ccd979bdSMark Fasheh /* -*- mode: c; c-basic-offset: 8; -*- 2ccd979bdSMark Fasheh * vim: noexpandtab sw=8 ts=8 sts=0: 3ccd979bdSMark Fasheh * 4ccd979bdSMark Fasheh * inode.h 5ccd979bdSMark Fasheh * 6ccd979bdSMark Fasheh * Function prototypes 7ccd979bdSMark Fasheh * 8ccd979bdSMark Fasheh * Copyright (C) 2002, 2004 Oracle. All rights reserved. 9ccd979bdSMark Fasheh * 10ccd979bdSMark Fasheh * This program is free software; you can redistribute it and/or 11ccd979bdSMark Fasheh * modify it under the terms of the GNU General Public 12ccd979bdSMark Fasheh * License as published by the Free Software Foundation; either 13ccd979bdSMark Fasheh * version 2 of the License, or (at your option) any later version. 14ccd979bdSMark Fasheh * 15ccd979bdSMark Fasheh * This program is distributed in the hope that it will be useful, 16ccd979bdSMark Fasheh * but WITHOUT ANY WARRANTY; without even the implied warranty of 17ccd979bdSMark Fasheh * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18ccd979bdSMark Fasheh * General Public License for more details. 19ccd979bdSMark Fasheh * 20ccd979bdSMark Fasheh * You should have received a copy of the GNU General Public 21ccd979bdSMark Fasheh * License along with this program; if not, write to the 22ccd979bdSMark Fasheh * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 23ccd979bdSMark Fasheh * Boston, MA 021110-1307, USA. 24ccd979bdSMark Fasheh */ 25ccd979bdSMark Fasheh 26ccd979bdSMark Fasheh #ifndef OCFS2_INODE_H 27ccd979bdSMark Fasheh #define OCFS2_INODE_H 28ccd979bdSMark Fasheh 2983418978SMark Fasheh #include "extent_map.h" 3083418978SMark Fasheh 31ccd979bdSMark Fasheh /* OCFS2 Inode Private Data */ 32ccd979bdSMark Fasheh struct ocfs2_inode_info 33ccd979bdSMark Fasheh { 34ccd979bdSMark Fasheh u64 ip_blkno; 35ccd979bdSMark Fasheh 36ccd979bdSMark Fasheh struct ocfs2_lock_res ip_rw_lockres; 37e63aecb6SMark Fasheh struct ocfs2_lock_res ip_inode_lockres; 3850008630STiger Yang struct ocfs2_lock_res ip_open_lockres; 39ccd979bdSMark Fasheh 40ccd979bdSMark Fasheh /* protects allocation changes on this inode. */ 41ccd979bdSMark Fasheh struct rw_semaphore ip_alloc_sem; 42ccd979bdSMark Fasheh 43cf1d6c76STiger Yang /* protects extended attribute changes on this inode */ 44cf1d6c76STiger Yang struct rw_semaphore ip_xattr_sem; 45cf1d6c76STiger Yang 46a11f7e63SMark Fasheh /* Number of outstanding AIO's which are not page aligned */ 47c18ceab0SWengang Wang struct mutex ip_unaligned_aio; 48a11f7e63SMark Fasheh 49ccd979bdSMark Fasheh /* These fields are protected by ip_lock */ 50ccd979bdSMark Fasheh spinlock_t ip_lock; 51ccd979bdSMark Fasheh u32 ip_open_count; 52ccd979bdSMark Fasheh struct list_head ip_io_markers; 5383fd9c7fSGoldwyn Rodrigues u32 ip_clusters; 54ccd979bdSMark Fasheh 5583fd9c7fSGoldwyn Rodrigues u16 ip_dyn_features; 56251b6eccSMark Fasheh struct mutex ip_io_mutex; 57ccd979bdSMark Fasheh u32 ip_flags; /* see below */ 58ca4d147eSHerbert Poetzl u32 ip_attr; /* inode attributes */ 59ccd979bdSMark Fasheh 60*4506cfb6SRyan Ding /* Record unwritten extents during direct io. */ 61*4506cfb6SRyan Ding struct list_head ip_unwritten_list; 62*4506cfb6SRyan Ding 63ccd979bdSMark Fasheh /* protected by recovery_lock. */ 64ccd979bdSMark Fasheh struct inode *ip_next_orphan; 65ccd979bdSMark Fasheh 66ccd979bdSMark Fasheh struct ocfs2_caching_info ip_metadata_cache; 6783418978SMark Fasheh struct ocfs2_extent_map ip_extent_map; 68ccd979bdSMark Fasheh struct inode vfs_inode; 692b4e30fbSJoel Becker struct jbd2_inode ip_jinode; 7013821151STao Ma 7183fd9c7fSGoldwyn Rodrigues u32 ip_dir_start_lookup; 7283fd9c7fSGoldwyn Rodrigues 7313821151STao Ma /* Only valid if the inode is the dir. */ 7413821151STao Ma u32 ip_last_used_slot; 7513821151STao Ma u64 ip_last_used_group; 765e98d492SGoldwyn Rodrigues u32 ip_dir_lock_gen; 774fe370afSMark Fasheh 784fe370afSMark Fasheh struct ocfs2_alloc_reservation ip_la_data_resv; 792931cdcbSDarrick J. Wong 802931cdcbSDarrick J. Wong /* 812931cdcbSDarrick J. Wong * Transactions that contain inode's metadata needed to complete 822931cdcbSDarrick J. Wong * fsync and fdatasync, respectively. 832931cdcbSDarrick J. Wong */ 842931cdcbSDarrick J. Wong tid_t i_sync_tid; 852931cdcbSDarrick J. Wong tid_t i_datasync_tid; 861c92ec67SJan Kara 871c92ec67SJan Kara struct dquot *i_dquot[MAXQUOTAS]; 88ccd979bdSMark Fasheh }; 89ccd979bdSMark Fasheh 90ccd979bdSMark Fasheh /* 91ccd979bdSMark Fasheh * Flags for the ip_flags field 92ccd979bdSMark Fasheh */ 93ccd979bdSMark Fasheh /* System file inodes */ 94ccd979bdSMark Fasheh #define OCFS2_INODE_SYSTEM_FILE 0x00000001 95ccd979bdSMark Fasheh #define OCFS2_INODE_JOURNAL 0x00000002 96ccd979bdSMark Fasheh #define OCFS2_INODE_BITMAP 0x00000004 97ccd979bdSMark Fasheh /* This inode has been wiped from disk */ 98ccd979bdSMark Fasheh #define OCFS2_INODE_DELETED 0x00000008 99ccd979bdSMark Fasheh /* Has the inode been orphaned on another node? 100ccd979bdSMark Fasheh * 101ccd979bdSMark Fasheh * This hints to ocfs2_drop_inode that it should clear i_nlink before 102ccd979bdSMark Fasheh * continuing. 103ccd979bdSMark Fasheh * 104ccd979bdSMark Fasheh * We *only* set this on unlink vote from another node. If the inode 105ccd979bdSMark Fasheh * was locally orphaned, then we're sure of the state and don't need 106ccd979bdSMark Fasheh * to twiddle i_nlink later - it's either zero or not depending on 107ccd979bdSMark Fasheh * whether our unlink succeeded. Otherwise we got this from a node 108ccd979bdSMark Fasheh * whose intention was to orphan the inode, however he may have 109ccd979bdSMark Fasheh * crashed, failed etc, so we let ocfs2_drop_inode zero the value and 110ccd979bdSMark Fasheh * rely on ocfs2_delete_inode to sort things out under the proper 111ccd979bdSMark Fasheh * cluster locks. 112ccd979bdSMark Fasheh */ 1137bf619c1SJan Kara #define OCFS2_INODE_MAYBE_ORPHANED 0x00000010 114ccd979bdSMark Fasheh /* Does someone have the file open O_DIRECT */ 1157bf619c1SJan Kara #define OCFS2_INODE_OPEN_DIRECT 0x00000020 116d4cd1871SLi Dongyang /* Tell the inode wipe code it's not in orphan dir */ 1177bf619c1SJan Kara #define OCFS2_INODE_SKIP_ORPHAN_DIR 0x00000040 11893d911fcSJoseph Qi /* Entry in orphan dir with 'dio-' prefix */ 11993d911fcSJoseph Qi #define OCFS2_INODE_DIO_ORPHAN_ENTRY 0x00000080 120ccd979bdSMark Fasheh 121ccd979bdSMark Fasheh static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode) 122ccd979bdSMark Fasheh { 123ccd979bdSMark Fasheh return container_of(inode, struct ocfs2_inode_info, vfs_inode); 124ccd979bdSMark Fasheh } 125ccd979bdSMark Fasheh 126ccd979bdSMark Fasheh #define INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags & OCFS2_INODE_JOURNAL) 127ccd979bdSMark Fasheh #define SET_INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags |= OCFS2_INODE_JOURNAL) 128ccd979bdSMark Fasheh 129e18b890bSChristoph Lameter extern struct kmem_cache *ocfs2_inode_cache; 130ccd979bdSMark Fasheh 131f5e54d6eSChristoph Hellwig extern const struct address_space_operations ocfs2_aops; 1326e5a3d75SJoel Becker extern const struct ocfs2_caching_operations ocfs2_inode_caching_ops; 133ccd979bdSMark Fasheh 1348cb471e8SJoel Becker static inline struct ocfs2_caching_info *INODE_CACHE(struct inode *inode) 1358cb471e8SJoel Becker { 1368cb471e8SJoel Becker return &OCFS2_I(inode)->ip_metadata_cache; 1378cb471e8SJoel Becker } 1388cb471e8SJoel Becker 139066d92dcSAl Viro void ocfs2_evict_inode(struct inode *inode); 14045321ac5SAl Viro int ocfs2_drop_inode(struct inode *inode); 14124c19ef4SMark Fasheh 14224c19ef4SMark Fasheh /* Flags for ocfs2_iget() */ 1435fa0613eSJan Kara #define OCFS2_FI_FLAG_SYSFILE 0x1 1445fa0613eSJan Kara #define OCFS2_FI_FLAG_ORPHAN_RECOVERY 0x2 145a860f6ebSGang He #define OCFS2_FI_FLAG_FILECHECK_CHK 0x4 146a860f6ebSGang He #define OCFS2_FI_FLAG_FILECHECK_FIX 0x8 147a860f6ebSGang He 1486ca497a8Swengang wang struct inode *ocfs2_ilookup(struct super_block *sb, u64 feoff); 1495fa0613eSJan Kara struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags, 1505fa0613eSJan Kara int sysfile_type); 151ccd979bdSMark Fasheh int ocfs2_inode_init_private(struct inode *inode); 152ccd979bdSMark Fasheh int ocfs2_inode_revalidate(struct dentry *dentry); 153b657c95cSJoel Becker void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, 154ccd979bdSMark Fasheh int create_ino); 155ccd979bdSMark Fasheh void ocfs2_read_inode(struct inode *inode); 156ccd979bdSMark Fasheh void ocfs2_read_inode2(struct inode *inode, void *opaque); 157ccd979bdSMark Fasheh ssize_t ocfs2_rw_direct(int rw, struct file *filp, char *buf, 158ccd979bdSMark Fasheh size_t size, loff_t *offp); 159ccd979bdSMark Fasheh void ocfs2_sync_blockdev(struct super_block *sb); 160ccd979bdSMark Fasheh void ocfs2_refresh_inode(struct inode *inode, 161ccd979bdSMark Fasheh struct ocfs2_dinode *fe); 1621fabe148SMark Fasheh int ocfs2_mark_inode_dirty(handle_t *handle, 163ccd979bdSMark Fasheh struct inode *inode, 164ccd979bdSMark Fasheh struct buffer_head *bh); 1659e33d69fSJan Kara struct buffer_head *ocfs2_bread(struct inode *inode, 1669e33d69fSJan Kara int block, int *err, int reada); 167ccd979bdSMark Fasheh 168ca4d147eSHerbert Poetzl void ocfs2_set_inode_flags(struct inode *inode); 1696e4b0d56SJan Kara void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi); 170ca4d147eSHerbert Poetzl 1718110b073SMark Fasheh static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode) 1728110b073SMark Fasheh { 1738110b073SMark Fasheh int c_to_s_bits = OCFS2_SB(inode->i_sb)->s_clustersize_bits - 9; 1748110b073SMark Fasheh 1757fa05c6eSJoseph Qi return (blkcnt_t)OCFS2_I(inode)->ip_clusters << c_to_s_bits; 1768110b073SMark Fasheh } 1778110b073SMark Fasheh 178b657c95cSJoel Becker /* Validate that a bh contains a valid inode */ 179b657c95cSJoel Becker int ocfs2_validate_inode_block(struct super_block *sb, 180b657c95cSJoel Becker struct buffer_head *bh); 181b657c95cSJoel Becker /* 182b657c95cSJoel Becker * Read an inode block into *bh. If *bh is NULL, a bh will be allocated. 183b657c95cSJoel Becker * This is a cached read. The inode will be validated with 184b657c95cSJoel Becker * ocfs2_validate_inode_block(). 185b657c95cSJoel Becker */ 186b657c95cSJoel Becker int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh); 187b657c95cSJoel Becker /* The same, but can be passed OCFS2_BH_* flags */ 188b657c95cSJoel Becker int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh, 189b657c95cSJoel Becker int flags); 1906136ca5fSJoel Becker 1916136ca5fSJoel Becker static inline struct ocfs2_inode_info *cache_info_to_inode(struct ocfs2_caching_info *ci) 1926136ca5fSJoel Becker { 1936136ca5fSJoel Becker return container_of(ci, struct ocfs2_inode_info, ip_metadata_cache); 1946136ca5fSJoel Becker } 1956136ca5fSJoel Becker 196ccd979bdSMark Fasheh #endif /* OCFS2_INODE_H */ 197