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
11struct xfs_buf;
12struct xfs_bmbt_rec;
13struct xfs_inode;
14struct xfs_mount;
15
16struct 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	unsigned int		ili_fsync_fields;  /* logged since last fsync */
36	xfs_lsn_t		ili_flush_lsn;	   /* lsn at last flush */
37	xfs_csn_t		ili_commit_seq;	   /* last transaction commit */
38};
39
40static inline int xfs_inode_clean(struct xfs_inode *ip)
41{
42	return !ip->i_itemp || !(ip->i_itemp->ili_fields & XFS_ILOG_ALL);
43}
44
45extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
46extern void xfs_inode_item_destroy(struct xfs_inode *);
47extern void xfs_iflush_abort(struct xfs_inode *);
48extern void xfs_iflush_shutdown_abort(struct xfs_inode *);
49extern int xfs_inode_item_format_convert(xfs_log_iovec_t *,
50					 struct xfs_inode_log_format *);
51
52extern struct kmem_cache	*xfs_ili_cache;
53
54#endif	/* __XFS_INODE_ITEM_H__ */
55