[linux-block.git] / fs / xfs / xfs_inode_item.h

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 */
#ifndef	__XFS_INODE_ITEM_H__
#define	__XFS_INODE_ITEM_H__

/* kernel only definitions */

struct xfs_buf;
struct xfs_bmbt_rec;
struct xfs_inode;
struct xfs_mount;

struct xfs_inode_log_item {
	struct xfs_log_item	ili_item;	   /* common portion */
	struct xfs_inode	*ili_inode;	   /* inode ptr */
	unsigned short		ili_lock_flags;	   /* inode lock flags */
	/*
	 * The ili_lock protects the interactions between the dirty state and
	 * the flush state of the inode log item. This allows us to do atomic
	 * modifications of multiple state fields without having to hold a
	 * specific inode lock to serialise them.
	 *
	 * We need atomic changes between inode dirtying, inode flushing and
	 * inode completion, but these all hold different combinations of
	 * ILOCK and IFLUSHING and hence we need some other method of
	 * serialising updates to the flush state.
	 */
	spinlock_t		ili_lock;	   /* flush state lock */
	unsigned int		ili_last_fields;   /* fields when flushed */
	unsigned int		ili_fields;	   /* fields to be logged */
	unsigned int		ili_fsync_fields;  /* logged since last fsync */
	xfs_lsn_t		ili_flush_lsn;	   /* lsn at last flush */
	xfs_csn_t		ili_commit_seq;	   /* last transaction commit */
};

static inline int xfs_inode_clean(struct xfs_inode *ip)
{
	return !ip->i_itemp || !(ip->i_itemp->ili_fields & XFS_ILOG_ALL);
}

extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
extern void xfs_inode_item_destroy(struct xfs_inode *);
extern void xfs_iflush_abort(struct xfs_inode *);
extern void xfs_iflush_shutdown_abort(struct xfs_inode *);
extern int xfs_inode_item_format_convert(xfs_log_iovec_t *,
					 struct xfs_inode_log_format *);

extern struct kmem_cache	*xfs_ili_cache;

#endif	/* __XFS_INODE_ITEM_H__ */
Commit	Line	Data
0b61f8a4	1	// SPDX-License-Identifier: GPL-2.0
1da177e4	2	/*
7b718769 NS	3	* Copyright (c) 2000,2005 Silicon Graphics, Inc.
7b718769 NS	4	* All Rights Reserved.
1da177e4 LT	5	*/
	6	#ifndef __XFS_INODE_ITEM_H__
	7	#define __XFS_INODE_ITEM_H__
	8
69432832	9	/* kernel only definitions */
1da177e4 LT	10
1da177e4 LT	11	struct xfs_buf;
a5f9be58	12	struct xfs_bmbt_rec;
1da177e4 LT	13	struct xfs_inode;
	14	struct xfs_mount;
	15
fd9cbe51	16	struct xfs_inode_log_item {
efe2330f	17	struct xfs_log_item ili_item; /* common portion */
1da177e4	18	struct xfs_inode ili_inode; / inode ptr */
1319ebef DC	19	unsigned short ili_lock_flags; /* inode lock flags */
	20	/*
	21	* The ili_lock protects the interactions between the dirty state and
	22	* the flush state of the inode log item. This allows us to do atomic
	23	* modifications of multiple state fields without having to hold a
	24	* specific inode lock to serialise them.
	25	*
	26	* We need atomic changes between inode dirtying, inode flushing and
	27	* inode completion, but these all hold different combinations of
718ecc50 DC	28	* ILOCK and IFLUSHING and hence we need some other method of
718ecc50 DC	29	* serialising updates to the flush state.
1319ebef DC	30	*/
1319ebef DC	31	spinlock_t ili_lock; /* flush state lock */
1da177e4	32	unsigned int ili_last_fields; /* fields when flushed */
f5d8d5c4	33	unsigned int ili_fields; /* fields to be logged */
fc0561ce	34	unsigned int ili_fsync_fields; /* logged since last fsync */
1319ebef	35	xfs_lsn_t ili_flush_lsn; /* lsn at last flush */
5f9b4b0d	36	xfs_csn_t ili_commit_seq; /* last transaction commit */
fd9cbe51	37	};
1da177e4	38
aac855ab	39	static inline int xfs_inode_clean(struct xfs_inode *ip)
33540408	40	{
f5d8d5c4	41	return !ip->i_itemp \|\| !(ip->i_itemp->ili_fields & XFS_ILOG_ALL);
33540408 DC	42	}
33540408 DC	43
a844f451 NS	44	extern void xfs_inode_item_init(struct xfs_inode , struct xfs_mount );
a844f451 NS	45	extern void xfs_inode_item_destroy(struct xfs_inode *);
88fc1879	46	extern void xfs_iflush_abort(struct xfs_inode *);
d2d7c047	47	extern void xfs_iflush_shutdown_abort(struct xfs_inode *);
6d192a9b	48	extern int xfs_inode_item_format_convert(xfs_log_iovec_t *,
06b11321	49	struct xfs_inode_log_format *);
1da177e4	50
182696fb	51	extern struct kmem_cache *xfs_ili_cache;
1da177e4 LT	52
1da177e4 LT	53	#endif /* __XFS_INODE_ITEM_H__ */