135 lines
4.7 KiB
C
135 lines
4.7 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/*
|
||
|
|
* Copyright (c) 2000,2005 Silicon Graphics, Inc.
|
||
|
|
* All Rights Reserved.
|
||
|
|
*/
|
||
|
|
#ifndef __XFS_LOG_RECOVER_H__
|
||
|
|
#define __XFS_LOG_RECOVER_H__
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Each log item type (XFS_LI_*) gets its own xlog_recover_item_ops to
|
||
|
|
* define how recovery should work for that type of log item.
|
||
|
|
*/
|
||
|
|
struct xlog_recover_item;
|
||
|
|
|
||
|
|
/* Sorting hat for log items as they're read in. */
|
||
|
|
enum xlog_recover_reorder {
|
||
|
|
XLOG_REORDER_BUFFER_LIST,
|
||
|
|
XLOG_REORDER_ITEM_LIST,
|
||
|
|
XLOG_REORDER_INODE_BUFFER_LIST,
|
||
|
|
XLOG_REORDER_CANCEL_LIST,
|
||
|
|
};
|
||
|
|
|
||
|
|
struct xlog_recover_item_ops {
|
||
|
|
uint16_t item_type; /* XFS_LI_* type code. */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Help sort recovered log items into the order required to replay them
|
||
|
|
* correctly. Log item types that always use XLOG_REORDER_ITEM_LIST do
|
||
|
|
* not have to supply a function here. See the comment preceding
|
||
|
|
* xlog_recover_reorder_trans for more details about what the return
|
||
|
|
* values mean.
|
||
|
|
*/
|
||
|
|
enum xlog_recover_reorder (*reorder)(struct xlog_recover_item *item);
|
||
|
|
|
||
|
|
/* Start readahead for pass2, if provided. */
|
||
|
|
void (*ra_pass2)(struct xlog *log, struct xlog_recover_item *item);
|
||
|
|
|
||
|
|
/* Do whatever work we need to do for pass1, if provided. */
|
||
|
|
int (*commit_pass1)(struct xlog *log, struct xlog_recover_item *item);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This function should do whatever work is needed for pass2 of log
|
||
|
|
* recovery, if provided.
|
||
|
|
*
|
||
|
|
* If the recovered item is an intent item, this function should parse
|
||
|
|
* the recovered item to construct an in-core log intent item and
|
||
|
|
* insert it into the AIL. The in-core log intent item should have 1
|
||
|
|
* refcount so that the item is freed either (a) when we commit the
|
||
|
|
* recovered log item for the intent-done item; (b) replay the work and
|
||
|
|
* log a new intent-done item; or (c) recovery fails and we have to
|
||
|
|
* abort.
|
||
|
|
*
|
||
|
|
* If the recovered item is an intent-done item, this function should
|
||
|
|
* parse the recovered item to find the id of the corresponding intent
|
||
|
|
* log item. Next, it should find the in-core log intent item in the
|
||
|
|
* AIL and release it.
|
||
|
|
*/
|
||
|
|
int (*commit_pass2)(struct xlog *log, struct list_head *buffer_list,
|
||
|
|
struct xlog_recover_item *item, xfs_lsn_t lsn);
|
||
|
|
};
|
||
|
|
|
||
|
|
extern const struct xlog_recover_item_ops xlog_icreate_item_ops;
|
||
|
|
extern const struct xlog_recover_item_ops xlog_buf_item_ops;
|
||
|
|
extern const struct xlog_recover_item_ops xlog_inode_item_ops;
|
||
|
|
extern const struct xlog_recover_item_ops xlog_dquot_item_ops;
|
||
|
|
extern const struct xlog_recover_item_ops xlog_quotaoff_item_ops;
|
||
|
|
extern const struct xlog_recover_item_ops xlog_bui_item_ops;
|
||
|
|
extern const struct xlog_recover_item_ops xlog_bud_item_ops;
|
||
|
|
extern const struct xlog_recover_item_ops xlog_efi_item_ops;
|
||
|
|
extern const struct xlog_recover_item_ops xlog_efd_item_ops;
|
||
|
|
extern const struct xlog_recover_item_ops xlog_rui_item_ops;
|
||
|
|
extern const struct xlog_recover_item_ops xlog_rud_item_ops;
|
||
|
|
extern const struct xlog_recover_item_ops xlog_cui_item_ops;
|
||
|
|
extern const struct xlog_recover_item_ops xlog_cud_item_ops;
|
||
|
|
extern const struct xlog_recover_item_ops xlog_attri_item_ops;
|
||
|
|
extern const struct xlog_recover_item_ops xlog_attrd_item_ops;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Macros, structures, prototypes for internal log manager use.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define XLOG_RHASH_BITS 4
|
||
|
|
#define XLOG_RHASH_SIZE 16
|
||
|
|
#define XLOG_RHASH_SHIFT 2
|
||
|
|
#define XLOG_RHASH(tid) \
|
||
|
|
((((uint32_t)tid)>>XLOG_RHASH_SHIFT) & (XLOG_RHASH_SIZE-1))
|
||
|
|
|
||
|
|
#define XLOG_MAX_REGIONS_IN_ITEM (XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK / 2 + 1)
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* item headers are in ri_buf[0]. Additional buffers follow.
|
||
|
|
*/
|
||
|
|
struct xlog_recover_item {
|
||
|
|
struct list_head ri_list;
|
||
|
|
int ri_cnt; /* count of regions found */
|
||
|
|
int ri_total; /* total regions */
|
||
|
|
struct xfs_log_iovec *ri_buf; /* ptr to regions buffer */
|
||
|
|
const struct xlog_recover_item_ops *ri_ops;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct xlog_recover {
|
||
|
|
struct hlist_node r_list;
|
||
|
|
xlog_tid_t r_log_tid; /* log's transaction id */
|
||
|
|
xfs_trans_header_t r_theader; /* trans header for partial */
|
||
|
|
int r_state; /* not needed */
|
||
|
|
xfs_lsn_t r_lsn; /* xact lsn */
|
||
|
|
struct list_head r_itemq; /* q for items */
|
||
|
|
};
|
||
|
|
|
||
|
|
#define ITEM_TYPE(i) (*(unsigned short *)(i)->ri_buf[0].i_addr)
|
||
|
|
|
||
|
|
#define XLOG_RECOVER_CRCPASS 0
|
||
|
|
#define XLOG_RECOVER_PASS1 1
|
||
|
|
#define XLOG_RECOVER_PASS2 2
|
||
|
|
|
||
|
|
void xlog_buf_readahead(struct xlog *log, xfs_daddr_t blkno, uint len,
|
||
|
|
const struct xfs_buf_ops *ops);
|
||
|
|
bool xlog_is_buffer_cancelled(struct xlog *log, xfs_daddr_t blkno, uint len);
|
||
|
|
|
||
|
|
int xlog_recover_iget(struct xfs_mount *mp, xfs_ino_t ino,
|
||
|
|
struct xfs_inode **ipp);
|
||
|
|
void xlog_recover_release_intent(struct xlog *log, unsigned short intent_type,
|
||
|
|
uint64_t intent_id);
|
||
|
|
int xlog_alloc_buf_cancel_table(struct xlog *log);
|
||
|
|
void xlog_free_buf_cancel_table(struct xlog *log);
|
||
|
|
|
||
|
|
#ifdef DEBUG
|
||
|
|
void xlog_check_buf_cancel_table(struct xlog *log);
|
||
|
|
#else
|
||
|
|
#define xlog_check_buf_cancel_table(log) do { } while (0)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* __XFS_LOG_RECOVER_H__ */
|