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Diffstat (limited to 'fs/xfs/xfs_log_priv.h')
| -rw-r--r-- | fs/xfs/xfs_log_priv.h | 561 |
1 files changed, 561 insertions, 0 deletions
diff --git a/fs/xfs/xfs_log_priv.h b/fs/xfs/xfs_log_priv.h new file mode 100644 index 0000000..c31e3ce --- /dev/null +++ b/fs/xfs/xfs_log_priv.h @@ -0,0 +1,561 @@ +/* + * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 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. + * + * Further, this software is distributed without any warranty that it is + * free of the rightful claim of any third person regarding infringement + * or the like. Any license provided herein, whether implied or + * otherwise, applies only to this software file. Patent licenses, if + * any, provided herein do not apply to combinations of this program with + * other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, + * Mountain View, CA 94043, or: + * + * http://www.sgi.com + * + * For further information regarding this notice, see: + * + * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + */ +#ifndef __XFS_LOG_PRIV_H__ +#define __XFS_LOG_PRIV_H__ + +struct xfs_buf; +struct ktrace; +struct log; +struct xfs_buf_cancel; +struct xfs_mount; + +/* + * Macros, structures, prototypes for internal log manager use. + */ + +#define XLOG_MIN_ICLOGS 2 +#define XLOG_MED_ICLOGS 4 +#define XLOG_MAX_ICLOGS 8 +#define XLOG_CALLBACK_SIZE 10 +#define XLOG_HEADER_MAGIC_NUM 0xFEEDbabe /* Invalid cycle number */ +#define XLOG_VERSION_1 1 +#define XLOG_VERSION_2 2 /* Large IClogs, Log sunit */ +#define XLOG_VERSION_OKBITS (XLOG_VERSION_1 | XLOG_VERSION_2) +#define XLOG_RECORD_BSIZE (16*1024) /* eventually 32k */ +#define XLOG_BIG_RECORD_BSIZE (32*1024) /* 32k buffers */ +#define XLOG_MAX_RECORD_BSIZE (256*1024) +#define XLOG_HEADER_CYCLE_SIZE (32*1024) /* cycle data in header */ +#define XLOG_RECORD_BSHIFT 14 /* 16384 == 1 << 14 */ +#define XLOG_BIG_RECORD_BSHIFT 15 /* 32k == 1 << 15 */ +#define XLOG_MAX_RECORD_BSHIFT 18 /* 256k == 1 << 18 */ +#define XLOG_BTOLSUNIT(log, b) (((b)+(log)->l_mp->m_sb.sb_logsunit-1) / \ + (log)->l_mp->m_sb.sb_logsunit) +#define XLOG_LSUNITTOB(log, su) ((su) * (log)->l_mp->m_sb.sb_logsunit) + +#define XLOG_HEADER_SIZE 512 + +#define XLOG_REC_SHIFT(log) \ + BTOBB(1 << (XFS_SB_VERSION_HASLOGV2(&log->l_mp->m_sb) ? \ + XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT)) +#define XLOG_TOTAL_REC_SHIFT(log) \ + BTOBB(XLOG_MAX_ICLOGS << (XFS_SB_VERSION_HASLOGV2(&log->l_mp->m_sb) ? \ + XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT)) + +/* + * set lsns + */ + +#define ASSIGN_ANY_LSN_HOST(lsn,cycle,block) \ + { \ + (lsn) = ((xfs_lsn_t)(cycle)<<32)|(block); \ + } +#define ASSIGN_ANY_LSN_DISK(lsn,cycle,block) \ + { \ + INT_SET(((uint *)&(lsn))[0], ARCH_CONVERT, (cycle)); \ + INT_SET(((uint *)&(lsn))[1], ARCH_CONVERT, (block)); \ + } +#define ASSIGN_LSN(lsn,log) \ + ASSIGN_ANY_LSN_DISK(lsn,(log)->l_curr_cycle,(log)->l_curr_block); + +#define XLOG_SET(f,b) (((f) & (b)) == (b)) + +#define GET_CYCLE(ptr, arch) \ + (INT_GET(*(uint *)(ptr), arch) == XLOG_HEADER_MAGIC_NUM ? \ + INT_GET(*((uint *)(ptr)+1), arch) : \ + INT_GET(*(uint *)(ptr), arch) \ + ) + +#define BLK_AVG(blk1, blk2) ((blk1+blk2) >> 1) + + +#ifdef __KERNEL__ + +/* + * get client id from packed copy. + * + * this hack is here because the xlog_pack code copies four bytes + * of xlog_op_header containing the fields oh_clientid, oh_flags + * and oh_res2 into the packed copy. + * + * later on this four byte chunk is treated as an int and the + * client id is pulled out. + * + * this has endian issues, of course. + */ + +#if __BYTE_ORDER == __LITTLE_ENDIAN +#define GET_CLIENT_ID(i,arch) \ + ((i) & 0xff) +#else +#define GET_CLIENT_ID(i,arch) \ + ((i) >> 24) +#endif + +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XLOG_GRANT_SUB_SPACE) +void xlog_grant_sub_space(struct log *log, int bytes, int type); +#define XLOG_GRANT_SUB_SPACE(log,bytes,type) \ + xlog_grant_sub_space(log,bytes,type) +#else +#define XLOG_GRANT_SUB_SPACE(log,bytes,type) \ + { \ + if (type == 'w') { \ + (log)->l_grant_write_bytes -= (bytes); \ + if ((log)->l_grant_write_bytes < 0) { \ + (log)->l_grant_write_bytes += (log)->l_logsize; \ + (log)->l_grant_write_cycle--; \ + } \ + } else { \ + (log)->l_grant_reserve_bytes -= (bytes); \ + if ((log)->l_grant_reserve_bytes < 0) { \ + (log)->l_grant_reserve_bytes += (log)->l_logsize;\ + (log)->l_grant_reserve_cycle--; \ + } \ + } \ + } +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XLOG_GRANT_ADD_SPACE) +void xlog_grant_add_space(struct log *log, int bytes, int type); +#define XLOG_GRANT_ADD_SPACE(log,bytes,type) \ + xlog_grant_add_space(log,bytes,type) +#else +#define XLOG_GRANT_ADD_SPACE(log,bytes,type) \ + { \ + if (type == 'w') { \ + (log)->l_grant_write_bytes += (bytes); \ + if ((log)->l_grant_write_bytes > (log)->l_logsize) { \ + (log)->l_grant_write_bytes -= (log)->l_logsize; \ + (log)->l_grant_write_cycle++; \ + } \ + } else { \ + (log)->l_grant_reserve_bytes += (bytes); \ + if ((log)->l_grant_reserve_bytes > (log)->l_logsize) { \ + (log)->l_grant_reserve_bytes -= (log)->l_logsize;\ + (log)->l_grant_reserve_cycle++; \ + } \ + } \ + } +#endif +#define XLOG_INS_TICKETQ(q,tic) \ + { \ + if (q) { \ + (tic)->t_next = (q); \ + (tic)->t_prev = (q)->t_prev; \ + (q)->t_prev->t_next = (tic); \ + (q)->t_prev = (tic); \ + } else { \ + (tic)->t_prev = (tic)->t_next = (tic); \ + (q) = (tic); \ + } \ + (tic)->t_flags |= XLOG_TIC_IN_Q; \ + } +#define XLOG_DEL_TICKETQ(q,tic) \ + { \ + if ((tic) == (tic)->t_next) { \ + (q) = NULL; \ + } else { \ + (q) = (tic)->t_next; \ + (tic)->t_next->t_prev = (tic)->t_prev; \ + (tic)->t_prev->t_next = (tic)->t_next; \ + } \ + (tic)->t_next = (tic)->t_prev = NULL; \ + (tic)->t_flags &= ~XLOG_TIC_IN_Q; \ + } + + +#define GRANT_LOCK(log) mutex_spinlock(&(log)->l_grant_lock) +#define GRANT_UNLOCK(log, s) mutex_spinunlock(&(log)->l_grant_lock, s) +#define LOG_LOCK(log) mutex_spinlock(&(log)->l_icloglock) +#define LOG_UNLOCK(log, s) mutex_spinunlock(&(log)->l_icloglock, s) + +#define xlog_panic(args...) cmn_err(CE_PANIC, ## args) +#define xlog_exit(args...) cmn_err(CE_PANIC, ## args) +#define xlog_warn(args...) cmn_err(CE_WARN, ## args) + +/* + * In core log state + */ +#define XLOG_STATE_ACTIVE 0x0001 /* Current IC log being written to */ +#define XLOG_STATE_WANT_SYNC 0x0002 /* Want to sync this iclog; no more writes */ +#define XLOG_STATE_SYNCING 0x0004 /* This IC log is syncing */ +#define XLOG_STATE_DONE_SYNC 0x0008 /* Done syncing to disk */ +#define XLOG_STATE_DO_CALLBACK \ + 0x0010 /* Process callback functions */ +#define XLOG_STATE_CALLBACK 0x0020 /* Callback functions now */ +#define XLOG_STATE_DIRTY 0x0040 /* Dirty IC log, not ready for ACTIVE status*/ +#define XLOG_STATE_IOERROR 0x0080 /* IO error happened in sync'ing log */ +#define XLOG_STATE_ALL 0x7FFF /* All possible valid flags */ +#define XLOG_STATE_NOTUSED 0x8000 /* This IC log not being used */ +#endif /* __KERNEL__ */ + +/* + * Flags to log operation header + * + * The first write of a new transaction will be preceded with a start + * record, XLOG_START_TRANS. Once a transaction is committed, a commit + * record is written, XLOG_COMMIT_TRANS. If a single region can not fit into + * the remainder of the current active in-core log, it is split up into + * multiple regions. Each partial region will be marked with a + * XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS. + * + */ +#define XLOG_START_TRANS 0x01 /* Start a new transaction */ +#define XLOG_COMMIT_TRANS 0x02 /* Commit this transaction */ +#define XLOG_CONTINUE_TRANS 0x04 /* Cont this trans into new region */ +#define XLOG_WAS_CONT_TRANS 0x08 /* Cont this trans into new region */ +#define XLOG_END_TRANS 0x10 /* End a continued transaction */ +#define XLOG_UNMOUNT_TRANS 0x20 /* Unmount a filesystem transaction */ +#define XLOG_SKIP_TRANS (XLOG_COMMIT_TRANS | XLOG_CONTINUE_TRANS | \ + XLOG_WAS_CONT_TRANS | XLOG_END_TRANS | \ + XLOG_UNMOUNT_TRANS) + +#ifdef __KERNEL__ +/* + * Flags to log ticket + */ +#define XLOG_TIC_INITED 0x1 /* has been initialized */ +#define XLOG_TIC_PERM_RESERV 0x2 /* permanent reservation */ +#define XLOG_TIC_IN_Q 0x4 +#endif /* __KERNEL__ */ + +#define XLOG_UNMOUNT_TYPE 0x556e /* Un for Unmount */ + +/* + * Flags for log structure + */ +#define XLOG_CHKSUM_MISMATCH 0x1 /* used only during recovery */ +#define XLOG_ACTIVE_RECOVERY 0x2 /* in the middle of recovery */ +#define XLOG_RECOVERY_NEEDED 0x4 /* log was recovered */ +#define XLOG_IO_ERROR 0x8 /* log hit an I/O error, and being + shutdown */ +typedef __uint32_t xlog_tid_t; + + +#ifdef __KERNEL__ +/* + * Below are states for covering allocation transactions. + * By covering, we mean changing the h_tail_lsn in the last on-disk + * log write such that no allocation transactions will be re-done during + * recovery after a system crash. Recovery starts at the last on-disk + * log write. + * + * These states are used to insert dummy log entries to cover + * space allocation transactions which can undo non-transactional changes + * after a crash. Writes to a file with space + * already allocated do not result in any transactions. Allocations + * might include space beyond the EOF. So if we just push the EOF a + * little, the last transaction for the file could contain the wrong + * size. If there is no file system activity, after an allocation + * transaction, and the system crashes, the allocation transaction + * will get replayed and the file will be truncated. This could + * be hours/days/... after the allocation occurred. + * + * The fix for this is to do two dummy transactions when the + * system is idle. We need two dummy transaction because the h_tail_lsn + * in the log record header needs to point beyond the last possible + * non-dummy transaction. The first dummy changes the h_tail_lsn to + * the first transaction before the dummy. The second dummy causes + * h_tail_lsn to point to the first dummy. Recovery starts at h_tail_lsn. + * + * These dummy transactions get committed when everything + * is idle (after there has been some activity). + * + * There are 5 states used to control this. + * + * IDLE -- no logging has been done on the file system or + * we are done covering previous transactions. + * NEED -- logging has occurred and we need a dummy transaction + * when the log becomes idle. + * DONE -- we were in the NEED state and have committed a dummy + * transaction. + * NEED2 -- we detected that a dummy transaction has gone to the + * on disk log with no other transactions. + * DONE2 -- we committed a dummy transaction when in the NEED2 state. + * + * There are two places where we switch states: + * + * 1.) In xfs_sync, when we detect an idle log and are in NEED or NEED2. + * We commit the dummy transaction and switch to DONE or DONE2, + * respectively. In all other states, we don't do anything. + * + * 2.) When we finish writing the on-disk log (xlog_state_clean_log). + * + * No matter what state we are in, if this isn't the dummy + * transaction going out, the next state is NEED. + * So, if we aren't in the DONE or DONE2 states, the next state + * is NEED. We can't be finishing a write of the dummy record + * unless it was committed and the state switched to DONE or DONE2. + * + * If we are in the DONE state and this was a write of the + * dummy transaction, we move to NEED2. + * + * If we are in the DONE2 state and this was a write of the + * dummy transaction, we move to IDLE. + * + * + * Writing only one dummy transaction can get appended to + * one file space allocation. When this happens, the log recovery + * code replays the space allocation and a file could be truncated. + * This is why we have the NEED2 and DONE2 states before going idle. + */ + +#define XLOG_STATE_COVER_IDLE 0 +#define XLOG_STATE_COVER_NEED 1 +#define XLOG_STATE_COVER_DONE 2 +#define XLOG_STATE_COVER_NEED2 3 +#define XLOG_STATE_COVER_DONE2 4 + +#define XLOG_COVER_OPS 5 + +typedef struct xlog_ticket { + sv_t t_sema; /* sleep on this semaphore :20 */ + struct xlog_ticket *t_next; /* : 4 */ + struct xlog_ticket *t_prev; /* : 4 */ + xlog_tid_t t_tid; /* transaction identifier : 4 */ + int t_curr_res; /* current reservation in bytes : 4 */ + int t_unit_res; /* unit reservation in bytes : 4 */ + __uint8_t t_ocnt; /* original count : 1 */ + __uint8_t t_cnt; /* current count : 1 */ + __uint8_t t_clientid; /* who does this belong to; : 1 */ + __uint8_t t_flags; /* properties of reservation : 1 */ +} xlog_ticket_t; +#endif + + +typedef struct xlog_op_header { + xlog_tid_t oh_tid; /* transaction id of operation : 4 b */ + int oh_len; /* bytes in data region : 4 b */ + __uint8_t oh_clientid; /* who sent me this : 1 b */ + __uint8_t oh_flags; /* : 1 b */ + ushort oh_res2; /* 32 bit align : 2 b */ +} xlog_op_header_t; + + +/* valid values for h_fmt */ +#define XLOG_FMT_UNKNOWN 0 +#define XLOG_FMT_LINUX_LE 1 +#define XLOG_FMT_LINUX_BE 2 +#define XLOG_FMT_IRIX_BE 3 + +/* our fmt */ +#if __BYTE_ORDER == __LITTLE_ENDIAN +#define XLOG_FMT XLOG_FMT_LINUX_LE +#else +#if __BYTE_ORDER == __BIG_ENDIAN +#define XLOG_FMT XLOG_FMT_LINUX_BE +#else +#error unknown byte order +#endif +#endif + +typedef struct xlog_rec_header { + uint h_magicno; /* log record (LR) identifier : 4 */ + uint h_cycle; /* write cycle of log : 4 */ + int h_version; /* LR version : 4 */ + int h_len; /* len in bytes; should be 64-bit aligned: 4 */ + xfs_lsn_t h_lsn; /* lsn of this LR : 8 */ + xfs_lsn_t h_tail_lsn; /* lsn of 1st LR w/ buffers not committed: 8 */ + uint h_chksum; /* may not be used; non-zero if used : 4 */ + int h_prev_block; /* block number to previous LR : 4 */ + int h_num_logops; /* number of log operations in this LR : 4 */ + uint h_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; + /* new fields */ + int h_fmt; /* format of log record : 4 */ + uuid_t h_fs_uuid; /* uuid of FS : 16 */ + int h_size; /* iclog size : 4 */ +} xlog_rec_header_t; + +typedef struct xlog_rec_ext_header { + uint xh_cycle; /* write cycle of log : 4 */ + uint xh_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; /* : 256 */ +} xlog_rec_ext_header_t; + +#ifdef __KERNEL__ +/* + * - A log record header is 512 bytes. There is plenty of room to grow the + * xlog_rec_header_t into the reserved space. + * - ic_data follows, so a write to disk can start at the beginning of + * the iclog. + * - ic_forcesema is used to implement synchronous forcing of the iclog to disk. + * - ic_next is the pointer to the next iclog in the ring. + * - ic_bp is a pointer to the buffer used to write this incore log to disk. + * - ic_log is a pointer back to the global log structure. + * - ic_callback is a linked list of callback function/argument pairs to be + * called after an iclog finishes writing. + * - ic_size is the full size of the header plus data. + * - ic_offset is the current number of bytes written to in this iclog. + * - ic_refcnt is bumped when someone is writing to the log. + * - ic_state is the state of the iclog. + */ +typedef struct xlog_iclog_fields { + sv_t ic_forcesema; + sv_t ic_writesema; + struct xlog_in_core *ic_next; + struct xlog_in_core *ic_prev; + struct xfs_buf *ic_bp; + struct log *ic_log; + xfs_log_callback_t *ic_callback; + xfs_log_callback_t **ic_callback_tail; +#ifdef XFS_LOG_TRACE + struct ktrace *ic_trace; +#endif + int ic_size; + int ic_offset; + int ic_refcnt; + int ic_bwritecnt; + ushort_t ic_state; + char *ic_datap; /* pointer to iclog data */ +} xlog_iclog_fields_t; + +typedef union xlog_in_core2 { + xlog_rec_header_t hic_header; + xlog_rec_ext_header_t hic_xheader; + char hic_sector[XLOG_HEADER_SIZE]; +} xlog_in_core_2_t; + +typedef struct xlog_in_core { + xlog_iclog_fields_t hic_fields; + xlog_in_core_2_t *hic_data; +} xlog_in_core_t; + +/* + * Defines to save our code from this glop. + */ +#define ic_forcesema hic_fields.ic_forcesema +#define ic_writesema hic_fields.ic_writesema +#define ic_next hic_fields.ic_next +#define ic_prev hic_fields.ic_prev +#define ic_bp hic_fields.ic_bp +#define ic_log hic_fields.ic_log +#define ic_callback hic_fields.ic_callback +#define ic_callback_tail hic_fields.ic_callback_tail +#define ic_trace hic_fields.ic_trace +#define ic_size hic_fields.ic_size +#define ic_offset hic_fields.ic_offset +#define ic_refcnt hic_fields.ic_refcnt +#define ic_bwritecnt hic_fields.ic_bwritecnt +#define ic_state hic_fields.ic_state +#define ic_datap hic_fields.ic_datap +#define ic_header hic_data->hic_header + +/* + * The reservation head lsn is not made up of a cycle number and block number. + * Instead, it uses a cycle number and byte number. Logs don't expect to + * overflow 31 bits worth of byte offset, so using a byte number will mean + * that round off problems won't occur when releasing partial reservations. + */ +typedef struct log { + /* The following block of fields are changed while holding icloglock */ + sema_t l_flushsema; /* iclog flushing semaphore */ + int l_flushcnt; /* # of procs waiting on this + * sema */ + int l_ticket_cnt; /* free ticket count */ + int l_ticket_tcnt; /* total ticket count */ + int l_covered_state;/* state of "covering disk + * log entries" */ + xlog_ticket_t *l_freelist; /* free list of tickets */ + xlog_ticket_t *l_unmount_free;/* kmem_free these addresses */ + xlog_ticket_t *l_tail; /* free list of tickets */ + xlog_in_core_t *l_iclog; /* head log queue */ + lock_t l_icloglock; /* grab to change iclog state */ + xfs_lsn_t l_tail_lsn; /* lsn of 1st LR with unflushed + * buffers */ + xfs_lsn_t l_last_sync_lsn;/* lsn of last LR on disk */ + struct xfs_mount *l_mp; /* mount point */ + struct xfs_buf *l_xbuf; /* extra buffer for log + * wrapping */ + struct xfs_buftarg *l_targ; /* buftarg of log */ + xfs_daddr_t l_logBBstart; /* start block of log */ + int l_logsize; /* size of log in bytes */ + int l_logBBsize; /* size of log in BB chunks */ + int l_curr_cycle; /* Cycle number of log writes */ + int l_prev_cycle; /* Cycle number before last + * block increment */ + int l_curr_block; /* current logical log block */ + int l_prev_block; /* previous logical log block */ + int l_iclog_size; /* size of log in bytes */ + int l_iclog_size_log; /* log power size of log */ + int l_iclog_bufs; /* number of iclog buffers */ + + /* The following field are used for debugging; need to hold icloglock */ + char *l_iclog_bak[XLOG_MAX_ICLOGS]; + + /* The following block of fields are changed while holding grant_lock */ + lock_t l_grant_lock; + xlog_ticket_t *l_reserve_headq; + xlog_ticket_t *l_write_headq; + int l_grant_reserve_cycle; + int l_grant_reserve_bytes; + int l_grant_write_cycle; + int l_grant_write_bytes; + + /* The following fields don't need locking */ +#ifdef XFS_LOG_TRACE + struct ktrace *l_trace; + struct ktrace *l_grant_trace; +#endif + uint l_flags; + uint l_quotaoffs_flag; /* XFS_DQ_*, for QUOTAOFFs */ + struct xfs_buf_cancel **l_buf_cancel_table; + int l_iclog_hsize; /* size of iclog header */ + int l_iclog_heads; /* # of iclog header sectors */ + uint l_sectbb_log; /* log2 of sector size in BBs */ + uint l_sectbb_mask; /* sector size (in BBs) + * alignment mask */ +} xlog_t; + + +/* common routines */ +extern xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp); +extern int xlog_find_head(xlog_t *log, xfs_daddr_t *head_blk); +extern int xlog_find_tail(xlog_t *log, + xfs_daddr_t *head_blk, + xfs_daddr_t *tail_blk, + int readonly); +extern int xlog_recover(xlog_t *log, int readonly); +extern int xlog_recover_finish(xlog_t *log, int mfsi_flags); +extern void xlog_pack_data(xlog_t *log, xlog_in_core_t *iclog, int); +extern void xlog_recover_process_iunlinks(xlog_t *log); + +extern struct xfs_buf *xlog_get_bp(xlog_t *, int); +extern void xlog_put_bp(struct xfs_buf *); +extern int xlog_bread(xlog_t *, xfs_daddr_t, int, struct xfs_buf *); +extern xfs_caddr_t xlog_align(xlog_t *, xfs_daddr_t, int, struct xfs_buf *); + +/* iclog tracing */ +#define XLOG_TRACE_GRAB_FLUSH 1 +#define XLOG_TRACE_REL_FLUSH 2 +#define XLOG_TRACE_SLEEP_FLUSH 3 +#define XLOG_TRACE_WAKE_FLUSH 4 + +#endif /* __KERNEL__ */ + +#endif /* __XFS_LOG_PRIV_H__ */ |
