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

/* SPDX-License-Identifier: GPL-2.0-or-later
 *
 * Copyright (C) 2022 Oracle.  All Rights Reserved.
 * Author: Allison Henderson <allison.henderson@oracle.com>
 */
#ifndef	__XFS_ATTR_ITEM_H__
#define	__XFS_ATTR_ITEM_H__

/* kernel only ATTRI/ATTRD definitions */

struct xfs_mount;
struct kmem_zone;

struct xfs_attri_log_nameval {
	struct xfs_log_iovec	name;
	struct xfs_log_iovec	value;
	refcount_t		refcount;

	/* name and value follow the end of this struct */
};

/*
 * This is the "attr intention" log item.  It is used to log the fact that some
 * extended attribute operations need to be processed.  An operation is
 * currently either a set or remove.  Set or remove operations are described by
 * the xfs_attr_intent which may be logged to this intent.
 *
 * During a normal attr operation, name and value point to the name and value
 * fields of the caller's xfs_da_args structure.  During a recovery, the name
 * and value buffers are copied from the log, and stored in a trailing buffer
 * attached to the xfs_attr_intent until they are committed.  They are freed
 * when the xfs_attr_intent itself is freed when the work is done.
 */
struct xfs_attri_log_item {
	struct xfs_log_item		attri_item;
	atomic_t			attri_refcount;
	struct xfs_attri_log_nameval	*attri_nameval;
	struct xfs_attri_log_format	attri_format;
};

/*
 * This is the "attr done" log item.  It is used to log the fact that some attrs
 * earlier mentioned in an attri item have been freed.
 */
struct xfs_attrd_log_item {
	struct xfs_log_item		attrd_item;
	struct xfs_attri_log_item	*attrd_attrip;
	struct xfs_attrd_log_format	attrd_format;
};

extern struct kmem_cache	*xfs_attri_cache;
extern struct kmem_cache	*xfs_attrd_cache;

#endif	/* __XFS_ATTR_ITEM_H__ */
Commit	Line	Data
fd920008 AH	1	/* SPDX-License-Identifier: GPL-2.0-or-later
	2	*
	3	* Copyright (C) 2022 Oracle. All Rights Reserved.
	4	* Author: Allison Henderson <allison.henderson@oracle.com>
	5	*/
	6	#ifndef __XFS_ATTR_ITEM_H__
	7	#define __XFS_ATTR_ITEM_H__
	8
	9	/* kernel only ATTRI/ATTRD definitions */
	10
	11	struct xfs_mount;
	12	struct kmem_zone;
	13
4183e4f2 DW	14	struct xfs_attri_log_nameval {
	15	struct xfs_log_iovec name;
	16	struct xfs_log_iovec value;
	17	refcount_t refcount;
	18
	19	/* name and value follow the end of this struct */
	20	};
	21
fd920008 AH	22	/*
	23	* This is the "attr intention" log item. It is used to log the fact that some
	24	* extended attribute operations need to be processed. An operation is
	25	* currently either a set or remove. Set or remove operations are described by
e3c5de22	26	* the xfs_attr_intent which may be logged to this intent.
fd920008 AH	27	*
	28	* During a normal attr operation, name and value point to the name and value
	29	* fields of the caller's xfs_da_args structure. During a recovery, the name
	30	* and value buffers are copied from the log, and stored in a trailing buffer
e3c5de22 DW	31	* attached to the xfs_attr_intent until they are committed. They are freed
e3c5de22 DW	32	* when the xfs_attr_intent itself is freed when the work is done.
fd920008 AH	33	*/
	34	struct xfs_attri_log_item {
	35	struct xfs_log_item attri_item;
	36	atomic_t attri_refcount;
4183e4f2	37	struct xfs_attri_log_nameval *attri_nameval;
fd920008 AH	38	struct xfs_attri_log_format attri_format;
	39	};
	40
	41	/*
	42	* This is the "attr done" log item. It is used to log the fact that some attrs
	43	* earlier mentioned in an attri item have been freed.
	44	*/
	45	struct xfs_attrd_log_item {
	46	struct xfs_log_item attrd_item;
	47	struct xfs_attri_log_item *attrd_attrip;
	48	struct xfs_attrd_log_format attrd_format;
	49	};
	50
4136e38a DW	51	extern struct kmem_cache *xfs_attri_cache;
	52	extern struct kmem_cache *xfs_attrd_cache;
	53
fd920008	54	#endif /* __XFS_ATTR_ITEM_H__ */