305 lines
9.9 KiB
C
305 lines
9.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*/
|
|
#ifndef __XFS_TRANS_H__
|
|
#define __XFS_TRANS_H__
|
|
|
|
/* kernel only transaction subsystem defines */
|
|
|
|
struct xlog;
|
|
struct xfs_buf;
|
|
struct xfs_buftarg;
|
|
struct xfs_efd_log_item;
|
|
struct xfs_efi_log_item;
|
|
struct xfs_inode;
|
|
struct xfs_item_ops;
|
|
struct xfs_log_iovec;
|
|
struct xfs_mount;
|
|
struct xfs_trans;
|
|
struct xfs_trans_res;
|
|
struct xfs_dquot_acct;
|
|
struct xfs_rud_log_item;
|
|
struct xfs_rui_log_item;
|
|
struct xfs_btree_cur;
|
|
struct xfs_cui_log_item;
|
|
struct xfs_cud_log_item;
|
|
struct xfs_bui_log_item;
|
|
struct xfs_bud_log_item;
|
|
|
|
struct xfs_log_item {
|
|
struct list_head li_ail; /* AIL pointers */
|
|
struct list_head li_trans; /* transaction list */
|
|
xfs_lsn_t li_lsn; /* last on-disk lsn */
|
|
struct xlog *li_log;
|
|
struct xfs_ail *li_ailp; /* ptr to AIL */
|
|
uint li_type; /* item type */
|
|
unsigned long li_flags; /* misc flags */
|
|
struct xfs_buf *li_buf; /* real buffer pointer */
|
|
struct list_head li_bio_list; /* buffer item list */
|
|
const struct xfs_item_ops *li_ops; /* function list */
|
|
|
|
/* delayed logging */
|
|
struct list_head li_cil; /* CIL pointers */
|
|
struct xfs_log_vec *li_lv; /* active log vector */
|
|
struct xfs_log_vec *li_lv_shadow; /* standby vector */
|
|
xfs_csn_t li_seq; /* CIL commit seq */
|
|
uint32_t li_order_id; /* CIL commit order */
|
|
};
|
|
|
|
/*
|
|
* li_flags use the (set/test/clear)_bit atomic interfaces because updates can
|
|
* race with each other and we don't want to have to use the AIL lock to
|
|
* serialise all updates.
|
|
*/
|
|
#define XFS_LI_IN_AIL 0
|
|
#define XFS_LI_ABORTED 1
|
|
#define XFS_LI_FAILED 2
|
|
#define XFS_LI_DIRTY 3
|
|
#define XFS_LI_WHITEOUT 4
|
|
|
|
#define XFS_LI_FLAGS \
|
|
{ (1u << XFS_LI_IN_AIL), "IN_AIL" }, \
|
|
{ (1u << XFS_LI_ABORTED), "ABORTED" }, \
|
|
{ (1u << XFS_LI_FAILED), "FAILED" }, \
|
|
{ (1u << XFS_LI_DIRTY), "DIRTY" }, \
|
|
{ (1u << XFS_LI_WHITEOUT), "WHITEOUT" }
|
|
|
|
struct xfs_item_ops {
|
|
unsigned flags;
|
|
void (*iop_size)(struct xfs_log_item *, int *, int *);
|
|
void (*iop_format)(struct xfs_log_item *, struct xfs_log_vec *);
|
|
void (*iop_pin)(struct xfs_log_item *);
|
|
void (*iop_unpin)(struct xfs_log_item *, int remove);
|
|
uint64_t (*iop_sort)(struct xfs_log_item *lip);
|
|
int (*iop_precommit)(struct xfs_trans *tp, struct xfs_log_item *lip);
|
|
void (*iop_committing)(struct xfs_log_item *lip, xfs_csn_t seq);
|
|
xfs_lsn_t (*iop_committed)(struct xfs_log_item *, xfs_lsn_t);
|
|
uint (*iop_push)(struct xfs_log_item *, struct list_head *);
|
|
void (*iop_release)(struct xfs_log_item *);
|
|
int (*iop_recover)(struct xfs_log_item *lip,
|
|
struct list_head *capture_list);
|
|
bool (*iop_match)(struct xfs_log_item *item, uint64_t id);
|
|
struct xfs_log_item *(*iop_relog)(struct xfs_log_item *intent,
|
|
struct xfs_trans *tp);
|
|
struct xfs_log_item *(*iop_intent)(struct xfs_log_item *intent_done);
|
|
};
|
|
|
|
/*
|
|
* Log item ops flags
|
|
*/
|
|
/*
|
|
* Release the log item when the journal commits instead of inserting into the
|
|
* AIL for writeback tracking and/or log tail pinning.
|
|
*/
|
|
#define XFS_ITEM_RELEASE_WHEN_COMMITTED (1 << 0)
|
|
#define XFS_ITEM_INTENT (1 << 1)
|
|
#define XFS_ITEM_INTENT_DONE (1 << 2)
|
|
|
|
static inline bool
|
|
xlog_item_is_intent(struct xfs_log_item *lip)
|
|
{
|
|
return lip->li_ops->flags & XFS_ITEM_INTENT;
|
|
}
|
|
|
|
static inline bool
|
|
xlog_item_is_intent_done(struct xfs_log_item *lip)
|
|
{
|
|
return lip->li_ops->flags & XFS_ITEM_INTENT_DONE;
|
|
}
|
|
|
|
void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
|
|
int type, const struct xfs_item_ops *ops);
|
|
|
|
/*
|
|
* Return values for the iop_push() routines.
|
|
*/
|
|
#define XFS_ITEM_SUCCESS 0
|
|
#define XFS_ITEM_PINNED 1
|
|
#define XFS_ITEM_LOCKED 2
|
|
#define XFS_ITEM_FLUSHING 3
|
|
|
|
/*
|
|
* This is the structure maintained for every active transaction.
|
|
*/
|
|
typedef struct xfs_trans {
|
|
unsigned int t_magic; /* magic number */
|
|
unsigned int t_log_res; /* amt of log space resvd */
|
|
unsigned int t_log_count; /* count for perm log res */
|
|
unsigned int t_blk_res; /* # of blocks resvd */
|
|
unsigned int t_blk_res_used; /* # of resvd blocks used */
|
|
unsigned int t_rtx_res; /* # of rt extents resvd */
|
|
unsigned int t_rtx_res_used; /* # of resvd rt extents used */
|
|
unsigned int t_flags; /* misc flags */
|
|
xfs_fsblock_t t_firstblock; /* first block allocated */
|
|
struct xlog_ticket *t_ticket; /* log mgr ticket */
|
|
struct xfs_mount *t_mountp; /* ptr to fs mount struct */
|
|
struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
|
|
int64_t t_icount_delta; /* superblock icount change */
|
|
int64_t t_ifree_delta; /* superblock ifree change */
|
|
int64_t t_fdblocks_delta; /* superblock fdblocks chg */
|
|
int64_t t_res_fdblocks_delta; /* on-disk only chg */
|
|
int64_t t_frextents_delta;/* superblock freextents chg*/
|
|
int64_t t_res_frextents_delta; /* on-disk only chg */
|
|
int64_t t_dblocks_delta;/* superblock dblocks change */
|
|
int64_t t_agcount_delta;/* superblock agcount change */
|
|
int64_t t_imaxpct_delta;/* superblock imaxpct change */
|
|
int64_t t_rextsize_delta;/* superblock rextsize chg */
|
|
int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
|
|
int64_t t_rblocks_delta;/* superblock rblocks change */
|
|
int64_t t_rextents_delta;/* superblocks rextents chg */
|
|
int64_t t_rextslog_delta;/* superblocks rextslog chg */
|
|
struct list_head t_items; /* log item descriptors */
|
|
struct list_head t_busy; /* list of busy extents */
|
|
struct list_head t_dfops; /* deferred operations */
|
|
unsigned long t_pflags; /* saved process flags state */
|
|
} xfs_trans_t;
|
|
|
|
/*
|
|
* XFS transaction mechanism exported interfaces that are
|
|
* actually macros.
|
|
*/
|
|
#define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
|
|
|
|
/*
|
|
* XFS transaction mechanism exported interfaces.
|
|
*/
|
|
int xfs_trans_alloc(struct xfs_mount *mp, struct xfs_trans_res *resp,
|
|
uint blocks, uint rtextents, uint flags,
|
|
struct xfs_trans **tpp);
|
|
int xfs_trans_alloc_empty(struct xfs_mount *mp,
|
|
struct xfs_trans **tpp);
|
|
void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
|
|
|
|
int xfs_trans_get_buf_map(struct xfs_trans *tp, struct xfs_buftarg *target,
|
|
struct xfs_buf_map *map, int nmaps, xfs_buf_flags_t flags,
|
|
struct xfs_buf **bpp);
|
|
|
|
static inline int
|
|
xfs_trans_get_buf(
|
|
struct xfs_trans *tp,
|
|
struct xfs_buftarg *target,
|
|
xfs_daddr_t blkno,
|
|
int numblks,
|
|
xfs_buf_flags_t flags,
|
|
struct xfs_buf **bpp)
|
|
{
|
|
DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
|
|
return xfs_trans_get_buf_map(tp, target, &map, 1, flags, bpp);
|
|
}
|
|
|
|
int xfs_trans_read_buf_map(struct xfs_mount *mp,
|
|
struct xfs_trans *tp,
|
|
struct xfs_buftarg *target,
|
|
struct xfs_buf_map *map, int nmaps,
|
|
xfs_buf_flags_t flags,
|
|
struct xfs_buf **bpp,
|
|
const struct xfs_buf_ops *ops);
|
|
|
|
static inline int
|
|
xfs_trans_read_buf(
|
|
struct xfs_mount *mp,
|
|
struct xfs_trans *tp,
|
|
struct xfs_buftarg *target,
|
|
xfs_daddr_t blkno,
|
|
int numblks,
|
|
xfs_buf_flags_t flags,
|
|
struct xfs_buf **bpp,
|
|
const struct xfs_buf_ops *ops)
|
|
{
|
|
DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
|
|
return xfs_trans_read_buf_map(mp, tp, target, &map, 1,
|
|
flags, bpp, ops);
|
|
}
|
|
|
|
struct xfs_buf *xfs_trans_getsb(struct xfs_trans *);
|
|
|
|
void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
|
|
void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
|
|
void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
|
|
void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
|
|
void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
|
|
void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
|
|
void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
|
|
bool xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
|
|
void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
|
|
void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
|
|
void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
|
|
void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
|
|
void xfs_trans_log_buf(struct xfs_trans *, struct xfs_buf *, uint,
|
|
uint);
|
|
void xfs_trans_dirty_buf(struct xfs_trans *, struct xfs_buf *);
|
|
bool xfs_trans_buf_is_dirty(struct xfs_buf *bp);
|
|
void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
|
|
|
|
int xfs_trans_commit(struct xfs_trans *);
|
|
int xfs_trans_roll(struct xfs_trans **);
|
|
int xfs_trans_roll_inode(struct xfs_trans **, struct xfs_inode *);
|
|
void xfs_trans_cancel(xfs_trans_t *);
|
|
int xfs_trans_ail_init(struct xfs_mount *);
|
|
void xfs_trans_ail_destroy(struct xfs_mount *);
|
|
|
|
void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
|
|
enum xfs_blft);
|
|
void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp,
|
|
struct xfs_buf *src_bp);
|
|
|
|
extern struct kmem_cache *xfs_trans_cache;
|
|
|
|
static inline struct xfs_log_item *
|
|
xfs_trans_item_relog(
|
|
struct xfs_log_item *lip,
|
|
struct xfs_trans *tp)
|
|
{
|
|
return lip->li_ops->iop_relog(lip, tp);
|
|
}
|
|
|
|
struct xfs_dquot;
|
|
|
|
int xfs_trans_alloc_inode(struct xfs_inode *ip, struct xfs_trans_res *resv,
|
|
unsigned int dblocks, unsigned int rblocks, bool force,
|
|
struct xfs_trans **tpp);
|
|
int xfs_trans_alloc_icreate(struct xfs_mount *mp, struct xfs_trans_res *resv,
|
|
struct xfs_dquot *udqp, struct xfs_dquot *gdqp,
|
|
struct xfs_dquot *pdqp, unsigned int dblocks,
|
|
struct xfs_trans **tpp);
|
|
int xfs_trans_alloc_ichange(struct xfs_inode *ip, struct xfs_dquot *udqp,
|
|
struct xfs_dquot *gdqp, struct xfs_dquot *pdqp, bool force,
|
|
struct xfs_trans **tpp);
|
|
int xfs_trans_alloc_dir(struct xfs_inode *dp, struct xfs_trans_res *resv,
|
|
struct xfs_inode *ip, unsigned int *dblocks,
|
|
struct xfs_trans **tpp, int *nospace_error);
|
|
|
|
static inline void
|
|
xfs_trans_set_context(
|
|
struct xfs_trans *tp)
|
|
{
|
|
ASSERT(current->journal_info == NULL);
|
|
tp->t_pflags = memalloc_nofs_save();
|
|
current->journal_info = tp;
|
|
}
|
|
|
|
static inline void
|
|
xfs_trans_clear_context(
|
|
struct xfs_trans *tp)
|
|
{
|
|
if (current->journal_info == tp) {
|
|
memalloc_nofs_restore(tp->t_pflags);
|
|
current->journal_info = NULL;
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
xfs_trans_switch_context(
|
|
struct xfs_trans *old_tp,
|
|
struct xfs_trans *new_tp)
|
|
{
|
|
ASSERT(current->journal_info == old_tp);
|
|
new_tp->t_pflags = old_tp->t_pflags;
|
|
old_tp->t_pflags = 0;
|
|
current->journal_info = new_tp;
|
|
}
|
|
|
|
#endif /* __XFS_TRANS_H__ */
|