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174 lines
5.3 KiB
174 lines
5.3 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* inode.h |
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* |
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* Function prototypes |
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* |
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* Copyright (C) 2002, 2004 Oracle. All rights reserved. |
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*/ |
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#ifndef OCFS2_INODE_H |
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#define OCFS2_INODE_H |
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#include "extent_map.h" |
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/* OCFS2 Inode Private Data */ |
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struct ocfs2_inode_info |
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{ |
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u64 ip_blkno; |
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struct ocfs2_lock_res ip_rw_lockres; |
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struct ocfs2_lock_res ip_inode_lockres; |
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struct ocfs2_lock_res ip_open_lockres; |
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/* protects allocation changes on this inode. */ |
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struct rw_semaphore ip_alloc_sem; |
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/* protects extended attribute changes on this inode */ |
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struct rw_semaphore ip_xattr_sem; |
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/* These fields are protected by ip_lock */ |
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spinlock_t ip_lock; |
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u32 ip_open_count; |
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struct list_head ip_io_markers; |
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u32 ip_clusters; |
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u16 ip_dyn_features; |
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struct mutex ip_io_mutex; |
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u32 ip_flags; /* see below */ |
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u32 ip_attr; /* inode attributes */ |
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/* Record unwritten extents during direct io. */ |
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struct list_head ip_unwritten_list; |
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/* protected by recovery_lock. */ |
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struct inode *ip_next_orphan; |
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struct ocfs2_caching_info ip_metadata_cache; |
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struct ocfs2_extent_map ip_extent_map; |
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struct inode vfs_inode; |
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struct jbd2_inode ip_jinode; |
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u32 ip_dir_start_lookup; |
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/* Only valid if the inode is the dir. */ |
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u32 ip_last_used_slot; |
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u64 ip_last_used_group; |
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u32 ip_dir_lock_gen; |
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struct ocfs2_alloc_reservation ip_la_data_resv; |
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/* |
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* Transactions that contain inode's metadata needed to complete |
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* fsync and fdatasync, respectively. |
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*/ |
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tid_t i_sync_tid; |
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tid_t i_datasync_tid; |
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struct dquot *i_dquot[MAXQUOTAS]; |
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}; |
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/* |
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* Flags for the ip_flags field |
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*/ |
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/* System file inodes */ |
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#define OCFS2_INODE_SYSTEM_FILE 0x00000001 |
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#define OCFS2_INODE_JOURNAL 0x00000002 |
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#define OCFS2_INODE_BITMAP 0x00000004 |
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/* This inode has been wiped from disk */ |
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#define OCFS2_INODE_DELETED 0x00000008 |
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/* Has the inode been orphaned on another node? |
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* |
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* This hints to ocfs2_drop_inode that it should clear i_nlink before |
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* continuing. |
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* |
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* We *only* set this on unlink vote from another node. If the inode |
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* was locally orphaned, then we're sure of the state and don't need |
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* to twiddle i_nlink later - it's either zero or not depending on |
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* whether our unlink succeeded. Otherwise we got this from a node |
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* whose intention was to orphan the inode, however he may have |
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* crashed, failed etc, so we let ocfs2_drop_inode zero the value and |
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* rely on ocfs2_delete_inode to sort things out under the proper |
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* cluster locks. |
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*/ |
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#define OCFS2_INODE_MAYBE_ORPHANED 0x00000010 |
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/* Does someone have the file open O_DIRECT */ |
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#define OCFS2_INODE_OPEN_DIRECT 0x00000020 |
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/* Tell the inode wipe code it's not in orphan dir */ |
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#define OCFS2_INODE_SKIP_ORPHAN_DIR 0x00000040 |
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/* Entry in orphan dir with 'dio-' prefix */ |
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#define OCFS2_INODE_DIO_ORPHAN_ENTRY 0x00000080 |
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static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode) |
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{ |
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return container_of(inode, struct ocfs2_inode_info, vfs_inode); |
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} |
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#define INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags & OCFS2_INODE_JOURNAL) |
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#define SET_INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags |= OCFS2_INODE_JOURNAL) |
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extern const struct address_space_operations ocfs2_aops; |
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extern const struct ocfs2_caching_operations ocfs2_inode_caching_ops; |
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static inline struct ocfs2_caching_info *INODE_CACHE(struct inode *inode) |
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{ |
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return &OCFS2_I(inode)->ip_metadata_cache; |
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} |
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void ocfs2_evict_inode(struct inode *inode); |
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int ocfs2_drop_inode(struct inode *inode); |
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/* Flags for ocfs2_iget() */ |
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#define OCFS2_FI_FLAG_SYSFILE 0x1 |
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#define OCFS2_FI_FLAG_ORPHAN_RECOVERY 0x2 |
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#define OCFS2_FI_FLAG_FILECHECK_CHK 0x4 |
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#define OCFS2_FI_FLAG_FILECHECK_FIX 0x8 |
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struct inode *ocfs2_ilookup(struct super_block *sb, u64 feoff); |
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struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags, |
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int sysfile_type); |
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int ocfs2_inode_revalidate(struct dentry *dentry); |
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void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, |
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int create_ino); |
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void ocfs2_sync_blockdev(struct super_block *sb); |
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void ocfs2_refresh_inode(struct inode *inode, |
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struct ocfs2_dinode *fe); |
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int ocfs2_mark_inode_dirty(handle_t *handle, |
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struct inode *inode, |
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struct buffer_head *bh); |
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void ocfs2_set_inode_flags(struct inode *inode); |
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void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi); |
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static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode) |
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{ |
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int c_to_s_bits = OCFS2_SB(inode->i_sb)->s_clustersize_bits - 9; |
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return (blkcnt_t)OCFS2_I(inode)->ip_clusters << c_to_s_bits; |
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} |
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/* Validate that a bh contains a valid inode */ |
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int ocfs2_validate_inode_block(struct super_block *sb, |
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struct buffer_head *bh); |
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/* |
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* Read an inode block into *bh. If *bh is NULL, a bh will be allocated. |
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* This is a cached read. The inode will be validated with |
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* ocfs2_validate_inode_block(). |
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*/ |
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int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh); |
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/* The same, but can be passed OCFS2_BH_* flags */ |
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int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh, |
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int flags); |
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static inline struct ocfs2_inode_info *cache_info_to_inode(struct ocfs2_caching_info *ci) |
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{ |
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return container_of(ci, struct ocfs2_inode_info, ip_metadata_cache); |
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} |
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/* Does this inode have the reflink flag set? */ |
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static inline bool ocfs2_is_refcount_inode(struct inode *inode) |
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{ |
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return (OCFS2_I(inode)->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL); |
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} |
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#endif /* OCFS2_INODE_H */
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