xfs_trans.h | Explore in Territory

// 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 { … };

/*
 * 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 …
#define XFS_LI_ABORTED …
#define XFS_LI_FAILED …
#define XFS_LI_DIRTY …
#define XFS_LI_WHITEOUT …
#define XFS_LI_FLUSHING …

#define XFS_LI_FLAGS …

struct xfs_item_ops { … };

/*
 * 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 …
#define XFS_ITEM_INTENT …
#define XFS_ITEM_INTENT_DONE …

static inline bool
xlog_item_is_intent(struct xfs_log_item *lip)
{ … }

static inline bool
xlog_item_is_intent_done(struct xfs_log_item *lip)
{ … }

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 …
#define XFS_ITEM_PINNED …
#define XFS_ITEM_LOCKED …
#define XFS_ITEM_FLUSHING …

/*
 * This is the structure maintained for every active transaction.
 */
xfs_trans_t;

/*
 * XFS transaction mechanism exported interfaces that are
 * actually macros.
 */
#define xfs_trans_set_sync(tp) …

/*
 * 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_reserve_more(struct xfs_trans *tp,
			unsigned int blocks, unsigned int rtextents);
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)
{ … }

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)
{ … }

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_bdetach(struct xfs_trans *tp, struct xfs_buf *bp);
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_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;

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_reserve_more_inode(struct xfs_trans *tp, struct xfs_inode *ip,
		unsigned int dblocks, unsigned int rblocks, bool force_quota);
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)
{ … }

static inline void
xfs_trans_clear_context(
	struct xfs_trans	*tp)
{ … }

static inline void
xfs_trans_switch_context(
	struct xfs_trans	*old_tp,
	struct xfs_trans	*new_tp)
{ … }

#endif	/* __XFS_TRANS_H__ */
linux/fs/xfs/xfs_trans.h
