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xfs_buf_item.h
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xfs_buf_item.h
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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
* All Rights Reserved.
*/
#ifndef __XFS_BUF_ITEM_H__
#define __XFS_BUF_ITEM_H__
/* kernel only definitions */
struct xfs_buf;
struct xfs_mount;
/* buf log item flags */
#define XFS_BLI_HOLD (1u << 0)
#define XFS_BLI_DIRTY (1u << 1)
#define XFS_BLI_STALE (1u << 2)
#define XFS_BLI_LOGGED (1u << 3)
#define XFS_BLI_INODE_ALLOC_BUF (1u << 4)
#define XFS_BLI_STALE_INODE (1u << 5)
#define XFS_BLI_INODE_BUF (1u << 6)
#define XFS_BLI_ORDERED (1u << 7)
#define XFS_BLI_FLAGS \
{ XFS_BLI_HOLD, "HOLD" }, \
{ XFS_BLI_DIRTY, "DIRTY" }, \
{ XFS_BLI_STALE, "STALE" }, \
{ XFS_BLI_LOGGED, "LOGGED" }, \
{ XFS_BLI_INODE_ALLOC_BUF, "INODE_ALLOC" }, \
{ XFS_BLI_STALE_INODE, "STALE_INODE" }, \
{ XFS_BLI_INODE_BUF, "INODE_BUF" }, \
{ XFS_BLI_ORDERED, "ORDERED" }
/*
* This is the in core log item structure used to track information
* needed to log buffers. It tracks how many times the lock has been
* locked, and which 128 byte chunks of the buffer are dirty.
*/
struct xfs_buf_log_item {
struct xfs_log_item bli_item; /* common item structure */
struct xfs_buf *bli_buf; /* real buffer pointer */
unsigned int bli_flags; /* misc flags */
unsigned int bli_recur; /* lock recursion count */
atomic_t bli_refcount; /* cnt of tp refs */
int bli_format_count; /* count of headers */
struct xfs_buf_log_format *bli_formats; /* array of in-log header ptrs */
struct xfs_buf_log_format __bli_format; /* embedded in-log header */
};
int xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *);
void xfs_buf_item_done(struct xfs_buf *bp);
void xfs_buf_item_relse(struct xfs_buf *);
bool xfs_buf_item_put(struct xfs_buf_log_item *);
void xfs_buf_item_log(struct xfs_buf_log_item *, uint, uint);
bool xfs_buf_item_dirty_format(struct xfs_buf_log_item *);
void xfs_buf_inode_iodone(struct xfs_buf *);
void xfs_buf_inode_io_fail(struct xfs_buf *bp);
#ifdef CONFIG_XFS_QUOTA
void xfs_buf_dquot_iodone(struct xfs_buf *);
void xfs_buf_dquot_io_fail(struct xfs_buf *bp);
#else
static inline void xfs_buf_dquot_iodone(struct xfs_buf *bp)
{
}
static inline void xfs_buf_dquot_io_fail(struct xfs_buf *bp)
{
}
#endif /* CONFIG_XFS_QUOTA */
void xfs_buf_iodone(struct xfs_buf *);
bool xfs_buf_log_check_iovec(struct xfs_log_iovec *iovec);
extern struct kmem_cache *xfs_buf_item_cache;
#endif /* __XFS_BUF_ITEM_H__ */