diff options
Diffstat (limited to 'sys/gnu/fs/xfs/xfs_buf_item.h')
| -rw-r--r-- | sys/gnu/fs/xfs/xfs_buf_item.h | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/sys/gnu/fs/xfs/xfs_buf_item.h b/sys/gnu/fs/xfs/xfs_buf_item.h deleted file mode 100644 index 07c708c..0000000 --- a/sys/gnu/fs/xfs/xfs_buf_item.h +++ /dev/null @@ -1,157 +0,0 @@ -/* - * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_BUF_ITEM_H__ -#define __XFS_BUF_ITEM_H__ - -/* - * This is the structure used to lay out a buf log item in the - * log. The data map describes which 128 byte chunks of the buffer - * have been logged. This structure works only on buffers that - * reside up to the first TB in the filesystem. These buffers are - * generated only by pre-6.2 systems and are known as XFS_LI_6_1_BUF. - */ -typedef struct xfs_buf_log_format_v1 { - unsigned short blf_type; /* buf log item type indicator */ - unsigned short blf_size; /* size of this item */ - __int32_t blf_blkno; /* starting blkno of this buf */ - ushort blf_flags; /* misc state */ - ushort blf_len; /* number of blocks in this buf */ - unsigned int blf_map_size; /* size of data bitmap in words */ - unsigned int blf_data_map[1];/* variable size bitmap of */ - /* regions of buffer in this item */ -} xfs_buf_log_format_v1_t; - -/* - * This is a form of the above structure with a 64 bit blkno field. - * For 6.2 and beyond, this is XFS_LI_BUF. We use this to log everything. - */ -typedef struct xfs_buf_log_format_t { - unsigned short blf_type; /* buf log item type indicator */ - unsigned short blf_size; /* size of this item */ - ushort blf_flags; /* misc state */ - ushort blf_len; /* number of blocks in this buf */ - __int64_t blf_blkno; /* starting blkno of this buf */ - unsigned int blf_map_size; /* size of data bitmap in words */ - unsigned int blf_data_map[1];/* variable size bitmap of */ - /* regions of buffer in this item */ -} xfs_buf_log_format_t; - -/* - * This flag indicates that the buffer contains on disk inodes - * and requires special recovery handling. - */ -#define XFS_BLI_INODE_BUF 0x1 -/* - * This flag indicates that the buffer should not be replayed - * during recovery because its blocks are being freed. - */ -#define XFS_BLI_CANCEL 0x2 -/* - * This flag indicates that the buffer contains on disk - * user or group dquots and may require special recovery handling. - */ -#define XFS_BLI_UDQUOT_BUF 0x4 -#define XFS_BLI_PDQUOT_BUF 0x8 -#define XFS_BLI_GDQUOT_BUF 0x10 - -#define XFS_BLI_CHUNK 128 -#define XFS_BLI_SHIFT 7 -#define BIT_TO_WORD_SHIFT 5 -#define NBWORD (NBBY * sizeof(unsigned int)) - -/* - * buf log item flags - */ -#define XFS_BLI_HOLD 0x01 -#define XFS_BLI_DIRTY 0x02 -#define XFS_BLI_STALE 0x04 -#define XFS_BLI_LOGGED 0x08 -#define XFS_BLI_INODE_ALLOC_BUF 0x10 -#define XFS_BLI_STALE_INODE 0x20 - - -#ifdef __KERNEL__ - -struct xfs_buf; -struct ktrace; -struct xfs_mount; -struct xfs_buf_log_item; - -#if defined(XFS_BLI_TRACE) -#define XFS_BLI_TRACE_SIZE 32 - -void xfs_buf_item_trace(char *, struct xfs_buf_log_item *); -#else -#define xfs_buf_item_trace(id, bip) -#endif - -/* - * 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. - */ -typedef struct xfs_buf_log_item { - xfs_log_item_t 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 */ -#ifdef XFS_BLI_TRACE - struct ktrace *bli_trace; /* event trace buf */ -#endif -#ifdef XFS_TRANS_DEBUG - char *bli_orig; /* original buffer copy */ - char *bli_logged; /* bytes logged (bitmap) */ -#endif - xfs_buf_log_format_t bli_format; /* in-log header */ -} xfs_buf_log_item_t; - -/* - * This structure is used during recovery to record the buf log - * items which have been canceled and should not be replayed. - */ -typedef struct xfs_buf_cancel { - xfs_daddr_t bc_blkno; - uint bc_len; - int bc_refcount; - struct xfs_buf_cancel *bc_next; -} xfs_buf_cancel_t; - -void xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *); -void xfs_buf_item_relse(struct xfs_buf *); -void xfs_buf_item_log(xfs_buf_log_item_t *, uint, uint); -uint xfs_buf_item_dirty(xfs_buf_log_item_t *); -void xfs_buf_attach_iodone(struct xfs_buf *, - void(*)(struct xfs_buf *, xfs_log_item_t *), - xfs_log_item_t *); -void xfs_buf_iodone_callbacks(struct xfs_buf *); -void xfs_buf_iodone(struct xfs_buf *, xfs_buf_log_item_t *); - -#ifdef XFS_TRANS_DEBUG -void -xfs_buf_item_flush_log_debug( - struct xfs_buf *bp, - uint first, - uint last); -#else -#define xfs_buf_item_flush_log_debug(bp, first, last) -#endif - -#endif /* __KERNEL__ */ - -#endif /* __XFS_BUF_ITEM_H__ */ |
