65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* Copyright (C) 2022 Oracle. All Rights Reserved.
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* Author: Allison Henderson <allison.henderson@oracle.com>
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*/
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#ifndef __XFS_ATTR_ITEM_H__
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#define __XFS_ATTR_ITEM_H__
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/* kernel only ATTRI/ATTRD definitions */
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struct xfs_mount;
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struct kmem_zone;
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struct xfs_attri_log_nameval {
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struct xfs_log_iovec name;
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struct xfs_log_iovec new_name; /* PPTR_REPLACE only */
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struct xfs_log_iovec value;
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struct xfs_log_iovec new_value; /* PPTR_REPLACE only */
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refcount_t refcount;
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/* name and value follow the end of this struct */
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};
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/*
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* This is the "attr intention" log item. It is used to log the fact that some
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* extended attribute operations need to be processed. An operation is
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* currently either a set or remove. Set or remove operations are described by
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* the xfs_attr_intent which may be logged to this intent.
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*
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* During a normal attr operation, name and value point to the name and value
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* fields of the caller's xfs_da_args structure. During a recovery, the name
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* and value buffers are copied from the log, and stored in a trailing buffer
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* attached to the xfs_attr_intent until they are committed. They are freed
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* when the xfs_attr_intent itself is freed when the work is done.
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*/
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struct xfs_attri_log_item {
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struct xfs_log_item attri_item;
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atomic_t attri_refcount;
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struct xfs_attri_log_nameval *attri_nameval;
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struct xfs_attri_log_format attri_format;
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};
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/*
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* This is the "attr done" log item. It is used to log the fact that some attrs
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* earlier mentioned in an attri item have been freed.
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*/
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struct xfs_attrd_log_item {
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struct xfs_log_item attrd_item;
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struct xfs_attri_log_item *attrd_attrip;
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struct xfs_attrd_log_format attrd_format;
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};
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extern struct kmem_cache *xfs_attri_cache;
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extern struct kmem_cache *xfs_attrd_cache;
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enum xfs_attr_defer_op {
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XFS_ATTR_DEFER_SET,
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XFS_ATTR_DEFER_REMOVE,
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XFS_ATTR_DEFER_REPLACE,
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};
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void xfs_attr_defer_add(struct xfs_da_args *args, enum xfs_attr_defer_op op);
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#endif /* __XFS_ATTR_ITEM_H__ */
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