freebsd-nq/include/sys/zil_impl.h
Michael Kjorling d1d7e2689d cstyle: Resolve C style issues
The vast majority of these changes are in Linux specific code.
They are the result of not having an automated style checker to
validate the code when it was originally written.  Others were
caused when the common code was slightly adjusted for Linux.

This patch contains no functional changes.  It only refreshes
the code to conform to style guide.

Everyone submitting patches for inclusion upstream should now
run 'make checkstyle' and resolve any warning prior to opening
a pull request.  The automated builders have been updated to
fail a build if when 'make checkstyle' detects an issue.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #1821
2013-12-18 16:46:35 -08:00

151 lines
5.5 KiB
C

/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012 by Delphix. All rights reserved.
*/
/* Portions Copyright 2010 Robert Milkowski */
#ifndef _SYS_ZIL_IMPL_H
#define _SYS_ZIL_IMPL_H
#include <sys/zil.h>
#include <sys/dmu_objset.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* Log write buffer.
*/
typedef struct lwb {
zilog_t *lwb_zilog; /* back pointer to log struct */
blkptr_t lwb_blk; /* on disk address of this log blk */
boolean_t lwb_fastwrite; /* is blk marked for fastwrite? */
int lwb_nused; /* # used bytes in buffer */
int lwb_sz; /* size of block and buffer */
char *lwb_buf; /* log write buffer */
zio_t *lwb_zio; /* zio for this buffer */
dmu_tx_t *lwb_tx; /* tx for log block allocation */
uint64_t lwb_max_txg; /* highest txg in this lwb */
list_node_t lwb_node; /* zilog->zl_lwb_list linkage */
} lwb_t;
/*
* Intent log transaction lists
*/
typedef struct itxs {
list_t i_sync_list; /* list of synchronous itxs */
avl_tree_t i_async_tree; /* tree of foids for async itxs */
} itxs_t;
typedef struct itxg {
kmutex_t itxg_lock; /* lock for this structure */
uint64_t itxg_txg; /* txg for this chain */
uint64_t itxg_sod; /* total size on disk for this txg */
itxs_t *itxg_itxs; /* sync and async itxs */
} itxg_t;
/* for async nodes we build up an AVL tree of lists of async itxs per file */
typedef struct itx_async_node {
uint64_t ia_foid; /* file object id */
list_t ia_list; /* list of async itxs for this foid */
avl_node_t ia_node; /* AVL tree linkage */
} itx_async_node_t;
/*
* Vdev flushing: during a zil_commit(), we build up an AVL tree of the vdevs
* we've touched so we know which ones need a write cache flush at the end.
*/
typedef struct zil_vdev_node {
uint64_t zv_vdev; /* vdev to be flushed */
avl_node_t zv_node; /* AVL tree linkage */
} zil_vdev_node_t;
#define ZIL_PREV_BLKS 16
/*
* Stable storage intent log management structure. One per dataset.
*/
struct zilog {
kmutex_t zl_lock; /* protects most zilog_t fields */
struct dsl_pool *zl_dmu_pool; /* DSL pool */
spa_t *zl_spa; /* handle for read/write log */
const zil_header_t *zl_header; /* log header buffer */
objset_t *zl_os; /* object set we're logging */
zil_get_data_t *zl_get_data; /* callback to get object content */
zio_t *zl_root_zio; /* log writer root zio */
uint64_t zl_lr_seq; /* on-disk log record sequence number */
uint64_t zl_commit_lr_seq; /* last committed on-disk lr seq */
uint64_t zl_destroy_txg; /* txg of last zil_destroy() */
uint64_t zl_replayed_seq[TXG_SIZE]; /* last replayed rec seq */
uint64_t zl_replaying_seq; /* current replay seq number */
uint32_t zl_suspend; /* log suspend count */
kcondvar_t zl_cv_writer; /* log writer thread completion */
kcondvar_t zl_cv_suspend; /* log suspend completion */
uint8_t zl_suspending; /* log is currently suspending */
uint8_t zl_keep_first; /* keep first log block in destroy */
uint8_t zl_replay; /* replaying records while set */
uint8_t zl_stop_sync; /* for debugging */
uint8_t zl_writer; /* boolean: write setup in progress */
uint8_t zl_logbias; /* latency or throughput */
uint8_t zl_sync; /* synchronous or asynchronous */
int zl_parse_error; /* last zil_parse() error */
uint64_t zl_parse_blk_seq; /* highest blk seq on last parse */
uint64_t zl_parse_lr_seq; /* highest lr seq on last parse */
uint64_t zl_parse_blk_count; /* number of blocks parsed */
uint64_t zl_parse_lr_count; /* number of log records parsed */
uint64_t zl_next_batch; /* next batch number */
uint64_t zl_com_batch; /* committed batch number */
kcondvar_t zl_cv_batch[2]; /* batch condition variables */
itxg_t zl_itxg[TXG_SIZE]; /* intent log txg chains */
list_t zl_itx_commit_list; /* itx list to be committed */
uint64_t zl_itx_list_sz; /* total size of records on list */
uint64_t zl_cur_used; /* current commit log size used */
list_t zl_lwb_list; /* in-flight log write list */
kmutex_t zl_vdev_lock; /* protects zl_vdev_tree */
avl_tree_t zl_vdev_tree; /* vdevs to flush in zil_commit() */
taskq_t *zl_clean_taskq; /* runs lwb and itx clean tasks */
avl_tree_t zl_bp_tree; /* track bps during log parse */
clock_t zl_replay_time; /* lbolt of when replay started */
uint64_t zl_replay_blks; /* number of log blocks replayed */
zil_header_t zl_old_header; /* debugging aid */
uint_t zl_prev_blks[ZIL_PREV_BLKS]; /* size - sector rounded */
uint_t zl_prev_rotor; /* rotor for zl_prev[] */
txg_node_t zl_dirty_link; /* protected by dp_dirty_zilogs list */
};
typedef struct zil_bp_node {
dva_t zn_dva;
avl_node_t zn_node;
} zil_bp_node_t;
#define ZIL_MAX_LOG_DATA (SPA_MAXBLOCKSIZE - sizeof (zil_chain_t) - \
sizeof (lr_write_t))
#ifdef __cplusplus
}
#endif
#endif /* _SYS_ZIL_IMPL_H */