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2499d91180
The log_vec is a private type for the log/CIL code and should not be exposed to anything else. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Carlos Maiolino <cem@kernel.org>
147 lines
4.2 KiB
C
147 lines
4.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*/
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#ifndef __XFS_LOG_H__
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#define __XFS_LOG_H__
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struct xlog_format_buf;
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struct xfs_cil_ctx;
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/* Region types for iovec's i_type */
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#define XLOG_REG_TYPE_BFORMAT 1
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#define XLOG_REG_TYPE_BCHUNK 2
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#define XLOG_REG_TYPE_EFI_FORMAT 3
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#define XLOG_REG_TYPE_EFD_FORMAT 4
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#define XLOG_REG_TYPE_IFORMAT 5
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#define XLOG_REG_TYPE_ICORE 6
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#define XLOG_REG_TYPE_IEXT 7
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#define XLOG_REG_TYPE_IBROOT 8
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#define XLOG_REG_TYPE_ILOCAL 9
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#define XLOG_REG_TYPE_IATTR_EXT 10
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#define XLOG_REG_TYPE_IATTR_BROOT 11
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#define XLOG_REG_TYPE_IATTR_LOCAL 12
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#define XLOG_REG_TYPE_QFORMAT 13
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#define XLOG_REG_TYPE_DQUOT 14
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#define XLOG_REG_TYPE_QUOTAOFF 15
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#define XLOG_REG_TYPE_LRHEADER 16
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#define XLOG_REG_TYPE_UNMOUNT 17
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#define XLOG_REG_TYPE_COMMIT 18
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#define XLOG_REG_TYPE_TRANSHDR 19
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#define XLOG_REG_TYPE_ICREATE 20
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#define XLOG_REG_TYPE_RUI_FORMAT 21
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#define XLOG_REG_TYPE_RUD_FORMAT 22
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#define XLOG_REG_TYPE_CUI_FORMAT 23
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#define XLOG_REG_TYPE_CUD_FORMAT 24
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#define XLOG_REG_TYPE_BUI_FORMAT 25
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#define XLOG_REG_TYPE_BUD_FORMAT 26
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#define XLOG_REG_TYPE_ATTRI_FORMAT 27
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#define XLOG_REG_TYPE_ATTRD_FORMAT 28
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#define XLOG_REG_TYPE_ATTR_NAME 29
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#define XLOG_REG_TYPE_ATTR_VALUE 30
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#define XLOG_REG_TYPE_XMI_FORMAT 31
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#define XLOG_REG_TYPE_XMD_FORMAT 32
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#define XLOG_REG_TYPE_ATTR_NEWNAME 33
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#define XLOG_REG_TYPE_ATTR_NEWVALUE 34
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#define XLOG_REG_TYPE_MAX 34
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#define XFS_LOG_VEC_ORDERED (-1)
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/*
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* Calculate the log iovec length for a given user buffer length. Intended to be
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* used by ->iop_size implementations when sizing buffers of arbitrary
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* alignments.
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*/
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static inline int
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xlog_calc_iovec_len(int len)
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{
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return roundup(len, sizeof(uint32_t));
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}
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void *xlog_format_start(struct xlog_format_buf *lfb, uint16_t type);
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void xlog_format_commit(struct xlog_format_buf *lfb, unsigned int data_len);
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/*
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* Copy the amount of data requested by the caller into a new log iovec.
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*/
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static inline void *
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xlog_format_copy(
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struct xlog_format_buf *lfb,
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uint16_t type,
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void *data,
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unsigned int len)
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{
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void *buf;
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buf = xlog_format_start(lfb, type);
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memcpy(buf, data, len);
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xlog_format_commit(lfb, len);
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return buf;
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}
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/*
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* By comparing each component, we don't have to worry about extra
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* endian issues in treating two 32 bit numbers as one 64 bit number
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*/
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static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2)
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{
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if (CYCLE_LSN(lsn1) != CYCLE_LSN(lsn2))
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return (CYCLE_LSN(lsn1)<CYCLE_LSN(lsn2))? -999 : 999;
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if (BLOCK_LSN(lsn1) != BLOCK_LSN(lsn2))
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return (BLOCK_LSN(lsn1)<BLOCK_LSN(lsn2))? -999 : 999;
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return 0;
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}
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#define XFS_LSN_CMP(x,y) _lsn_cmp(x,y)
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/*
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* Flags to xfs_log_force()
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*
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* XFS_LOG_SYNC: Synchronous force in-core log to disk
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*/
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#define XFS_LOG_SYNC 0x1
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/* Log manager interfaces */
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struct xfs_mount;
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struct xlog_in_core;
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struct xlog_ticket;
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struct xfs_log_item;
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struct xfs_item_ops;
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struct xfs_trans;
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struct xlog;
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int xfs_log_force(struct xfs_mount *mp, uint flags);
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int xfs_log_force_seq(struct xfs_mount *mp, xfs_csn_t seq, uint flags,
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int *log_forced);
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int xfs_log_mount(struct xfs_mount *mp,
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struct xfs_buftarg *log_target,
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xfs_daddr_t start_block,
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int num_bblocks);
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int xfs_log_mount_finish(struct xfs_mount *mp);
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void xfs_log_mount_cancel(struct xfs_mount *);
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xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp);
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xfs_lsn_t xlog_assign_tail_lsn_locked(struct xfs_mount *mp);
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void xfs_log_space_wake(struct xfs_mount *mp);
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int xfs_log_reserve(struct xfs_mount *mp, int length, int count,
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struct xlog_ticket **ticket, bool permanent);
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int xfs_log_regrant(struct xfs_mount *mp, struct xlog_ticket *tic);
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void xfs_log_unmount(struct xfs_mount *mp);
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bool xfs_log_writable(struct xfs_mount *mp);
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struct xlog_ticket *xfs_log_ticket_get(struct xlog_ticket *ticket);
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void xfs_log_ticket_put(struct xlog_ticket *ticket);
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void xlog_cil_process_committed(struct list_head *list);
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bool xfs_log_item_in_current_chkpt(struct xfs_log_item *lip);
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void xfs_log_work_queue(struct xfs_mount *mp);
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int xfs_log_quiesce(struct xfs_mount *mp);
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void xfs_log_clean(struct xfs_mount *mp);
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bool xfs_log_check_lsn(struct xfs_mount *, xfs_lsn_t);
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bool xlog_force_shutdown(struct xlog *log, uint32_t shutdown_flags);
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#endif /* __XFS_LOG_H__ */
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