1 files changed, 147 insertions, 0 deletions

diff --git a/uts/common/fs/zfs/sys/zil_impl.h b/uts/common/fs/zfs/sys/zil_impl.h
new file mode 100644
index 000000000000..1d4c0cc6c1de
--- /dev/null
+++ b/uts/common/fs/zfs/sys/zil_impl.h
@@ -0,0 +1,147 @@
+/*
+ * 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.
+ */
+
+/* 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 */
+	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[] */
+};
+
+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 */