1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2000,2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #ifndef __XFS_INODE_ITEM_H__ 7 #define __XFS_INODE_ITEM_H__ 8 9 /* kernel only definitions */ 10 11 struct xfs_buf; 12 struct xfs_bmbt_rec; 13 struct xfs_inode; 14 struct xfs_mount; 15 16 struct xfs_inode_log_item { 17 struct xfs_log_item ili_item; /* common portion */ 18 struct xfs_inode *ili_inode; /* inode ptr */ 19 unsigned short ili_lock_flags; /* inode lock flags */ 20 unsigned int ili_dirty_flags; /* dirty in current tx */ 21 /* 22 * The ili_lock protects the interactions between the dirty state and 23 * the flush state of the inode log item. This allows us to do atomic 24 * modifications of multiple state fields without having to hold a 25 * specific inode lock to serialise them. 26 * 27 * We need atomic changes between inode dirtying, inode flushing and 28 * inode completion, but these all hold different combinations of 29 * ILOCK and IFLUSHING and hence we need some other method of 30 * serialising updates to the flush state. 31 */ 32 spinlock_t ili_lock; /* flush state lock */ 33 unsigned int ili_last_fields; /* fields when flushed */ 34 unsigned int ili_fields; /* fields to be logged */ 35 xfs_lsn_t ili_flush_lsn; /* lsn at last flush */ 36 37 /* 38 * We record the sequence number for every inode modification, as 39 * well as those that only require fdatasync operations for data 40 * integrity. This allows optimisation of the O_DSYNC/fdatasync path 41 * without needing to track what modifications the journal is currently 42 * carrying for the inode. These are protected by the above ili_lock. 43 */ 44 xfs_csn_t ili_commit_seq; /* last transaction commit */ 45 xfs_csn_t ili_datasync_seq; /* for datasync optimisation */ 46 }; 47 xfs_inode_clean(struct xfs_inode * ip)48static inline int xfs_inode_clean(struct xfs_inode *ip) 49 { 50 return !ip->i_itemp || !(ip->i_itemp->ili_fields & XFS_ILOG_ALL); 51 } 52 53 extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *); 54 extern void xfs_inode_item_destroy(struct xfs_inode *); 55 extern void xfs_iflush_abort(struct xfs_inode *); 56 extern void xfs_iflush_shutdown_abort(struct xfs_inode *); 57 int xfs_inode_item_format_convert(struct kvec *buf, 58 struct xfs_inode_log_format *in_f); 59 60 extern struct kmem_cache *xfs_ili_cache; 61 62 #endif /* __XFS_INODE_ITEM_H__ */ 63