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 60ccd979bdSMark Fasheh /* protected by recovery_lock. */ 61ccd979bdSMark Fasheh struct inode *ip_next_orphan; 62ccd979bdSMark Fasheh 63ccd979bdSMark Fasheh struct ocfs2_caching_info ip_metadata_cache; 6483418978SMark Fasheh struct ocfs2_extent_map ip_extent_map; 65ccd979bdSMark Fasheh struct inode vfs_inode; 662b4e30fbSJoel Becker struct jbd2_inode ip_jinode; 6713821151STao Ma 6883fd9c7fSGoldwyn Rodrigues u32 ip_dir_start_lookup; 6983fd9c7fSGoldwyn Rodrigues 7013821151STao Ma /* Only valid if the inode is the dir. */ 7113821151STao Ma u32 ip_last_used_slot; 7213821151STao Ma u64 ip_last_used_group; 735e98d492SGoldwyn Rodrigues u32 ip_dir_lock_gen; 744fe370afSMark Fasheh 754fe370afSMark Fasheh struct ocfs2_alloc_reservation ip_la_data_resv; 762931cdcbSDarrick J. Wong 772931cdcbSDarrick J. Wong /* 782931cdcbSDarrick J. Wong * Transactions that contain inode's metadata needed to complete 792931cdcbSDarrick J. Wong * fsync and fdatasync, respectively. 802931cdcbSDarrick J. Wong */ 812931cdcbSDarrick J. Wong tid_t i_sync_tid; 822931cdcbSDarrick J. Wong tid_t i_datasync_tid; 83ccd979bdSMark Fasheh }; 84ccd979bdSMark Fasheh 85ccd979bdSMark Fasheh /* 86ccd979bdSMark Fasheh * Flags for the ip_flags field 87ccd979bdSMark Fasheh */ 88ccd979bdSMark Fasheh /* System file inodes */ 89ccd979bdSMark Fasheh #define OCFS2_INODE_SYSTEM_FILE 0x00000001 90ccd979bdSMark Fasheh #define OCFS2_INODE_JOURNAL 0x00000002 91ccd979bdSMark Fasheh #define OCFS2_INODE_BITMAP 0x00000004 92ccd979bdSMark Fasheh /* This inode has been wiped from disk */ 93ccd979bdSMark Fasheh #define OCFS2_INODE_DELETED 0x00000008 94ccd979bdSMark Fasheh /* Has the inode been orphaned on another node? 95ccd979bdSMark Fasheh * 96ccd979bdSMark Fasheh * This hints to ocfs2_drop_inode that it should clear i_nlink before 97ccd979bdSMark Fasheh * continuing. 98ccd979bdSMark Fasheh * 99ccd979bdSMark Fasheh * We *only* set this on unlink vote from another node. If the inode 100ccd979bdSMark Fasheh * was locally orphaned, then we're sure of the state and don't need 101ccd979bdSMark Fasheh * to twiddle i_nlink later - it's either zero or not depending on 102ccd979bdSMark Fasheh * whether our unlink succeeded. Otherwise we got this from a node 103ccd979bdSMark Fasheh * whose intention was to orphan the inode, however he may have 104ccd979bdSMark Fasheh * crashed, failed etc, so we let ocfs2_drop_inode zero the value and 105ccd979bdSMark Fasheh * rely on ocfs2_delete_inode to sort things out under the proper 106ccd979bdSMark Fasheh * cluster locks. 107ccd979bdSMark Fasheh */ 1087bf619c1SJan Kara #define OCFS2_INODE_MAYBE_ORPHANED 0x00000010 109ccd979bdSMark Fasheh /* Does someone have the file open O_DIRECT */ 1107bf619c1SJan Kara #define OCFS2_INODE_OPEN_DIRECT 0x00000020 111d4cd1871SLi Dongyang /* Tell the inode wipe code it's not in orphan dir */ 1127bf619c1SJan Kara #define OCFS2_INODE_SKIP_ORPHAN_DIR 0x00000040 113ccd979bdSMark Fasheh 114ccd979bdSMark Fasheh static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode) 115ccd979bdSMark Fasheh { 116ccd979bdSMark Fasheh return container_of(inode, struct ocfs2_inode_info, vfs_inode); 117ccd979bdSMark Fasheh } 118ccd979bdSMark Fasheh 119ccd979bdSMark Fasheh #define INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags & OCFS2_INODE_JOURNAL) 120ccd979bdSMark Fasheh #define SET_INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags |= OCFS2_INODE_JOURNAL) 121ccd979bdSMark Fasheh 122e18b890bSChristoph Lameter extern struct kmem_cache *ocfs2_inode_cache; 123ccd979bdSMark Fasheh 124f5e54d6eSChristoph Hellwig extern const struct address_space_operations ocfs2_aops; 1256e5a3d75SJoel Becker extern const struct ocfs2_caching_operations ocfs2_inode_caching_ops; 126ccd979bdSMark Fasheh 1278cb471e8SJoel Becker static inline struct ocfs2_caching_info *INODE_CACHE(struct inode *inode) 1288cb471e8SJoel Becker { 1298cb471e8SJoel Becker return &OCFS2_I(inode)->ip_metadata_cache; 1308cb471e8SJoel Becker } 1318cb471e8SJoel Becker 132066d92dcSAl Viro void ocfs2_evict_inode(struct inode *inode); 13345321ac5SAl Viro int ocfs2_drop_inode(struct inode *inode); 13424c19ef4SMark Fasheh 13524c19ef4SMark Fasheh /* Flags for ocfs2_iget() */ 1365fa0613eSJan Kara #define OCFS2_FI_FLAG_SYSFILE 0x1 1375fa0613eSJan Kara #define OCFS2_FI_FLAG_ORPHAN_RECOVERY 0x2 1386ca497a8Swengang wang struct inode *ocfs2_ilookup(struct super_block *sb, u64 feoff); 1395fa0613eSJan Kara struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags, 1405fa0613eSJan Kara int sysfile_type); 141ccd979bdSMark Fasheh int ocfs2_inode_init_private(struct inode *inode); 142ccd979bdSMark Fasheh int ocfs2_inode_revalidate(struct dentry *dentry); 143b657c95cSJoel Becker void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, 144ccd979bdSMark Fasheh int create_ino); 145ccd979bdSMark Fasheh void ocfs2_read_inode(struct inode *inode); 146ccd979bdSMark Fasheh void ocfs2_read_inode2(struct inode *inode, void *opaque); 147ccd979bdSMark Fasheh ssize_t ocfs2_rw_direct(int rw, struct file *filp, char *buf, 148ccd979bdSMark Fasheh size_t size, loff_t *offp); 149ccd979bdSMark Fasheh void ocfs2_sync_blockdev(struct super_block *sb); 150ccd979bdSMark Fasheh void ocfs2_refresh_inode(struct inode *inode, 151ccd979bdSMark Fasheh struct ocfs2_dinode *fe); 1521fabe148SMark Fasheh int ocfs2_mark_inode_dirty(handle_t *handle, 153ccd979bdSMark Fasheh struct inode *inode, 154ccd979bdSMark Fasheh struct buffer_head *bh); 1559e33d69fSJan Kara struct buffer_head *ocfs2_bread(struct inode *inode, 1569e33d69fSJan Kara int block, int *err, int reada); 157ccd979bdSMark Fasheh 158ca4d147eSHerbert Poetzl void ocfs2_set_inode_flags(struct inode *inode); 1596e4b0d56SJan Kara void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi); 160ca4d147eSHerbert Poetzl 1618110b073SMark Fasheh static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode) 1628110b073SMark Fasheh { 1638110b073SMark Fasheh int c_to_s_bits = OCFS2_SB(inode->i_sb)->s_clustersize_bits - 9; 1648110b073SMark Fasheh 165*7fa05c6eSJoseph Qi return (blkcnt_t)OCFS2_I(inode)->ip_clusters << c_to_s_bits; 1668110b073SMark Fasheh } 1678110b073SMark Fasheh 168b657c95cSJoel Becker /* Validate that a bh contains a valid inode */ 169b657c95cSJoel Becker int ocfs2_validate_inode_block(struct super_block *sb, 170b657c95cSJoel Becker struct buffer_head *bh); 171b657c95cSJoel Becker /* 172b657c95cSJoel Becker * Read an inode block into *bh. If *bh is NULL, a bh will be allocated. 173b657c95cSJoel Becker * This is a cached read. The inode will be validated with 174b657c95cSJoel Becker * ocfs2_validate_inode_block(). 175b657c95cSJoel Becker */ 176b657c95cSJoel Becker int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh); 177b657c95cSJoel Becker /* The same, but can be passed OCFS2_BH_* flags */ 178b657c95cSJoel Becker int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh, 179b657c95cSJoel Becker int flags); 1806136ca5fSJoel Becker 1816136ca5fSJoel Becker static inline struct ocfs2_inode_info *cache_info_to_inode(struct ocfs2_caching_info *ci) 1826136ca5fSJoel Becker { 1836136ca5fSJoel Becker return container_of(ci, struct ocfs2_inode_info, ip_metadata_cache); 1846136ca5fSJoel Becker } 1856136ca5fSJoel Becker 186ccd979bdSMark Fasheh #endif /* OCFS2_INODE_H */ 187