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Diffstat (limited to 'fs/xfs/xfs_buf_item.h')
| -rw-r--r-- | fs/xfs/xfs_buf_item.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/fs/xfs/xfs_buf_item.h b/fs/xfs/xfs_buf_item.h new file mode 100644 index 000000000..4d8a6aece --- /dev/null +++ b/fs/xfs/xfs_buf_item.h @@ -0,0 +1,74 @@ +// 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__ */ |