2 * Copyright (c) 2011-2016 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@dragonflybsd.org>
6 * by Venkatesh Srinivas <vsrinivas@dragonflybsd.org>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
18 * 3. Neither the name of The DragonFly Project nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific, prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
26 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
28 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
29 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
30 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
31 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * HAMMER2 IN-MEMORY CACHE OF MEDIA STRUCTURES
39 * This header file contains structures used internally by the HAMMER2
40 * implementation. See hammer2_disk.h for on-disk structures.
42 * There is an in-memory representation of all on-media data structure.
43 * Almost everything is represented by a hammer2_chain structure in-memory.
44 * Other higher-level structures typically map to chains.
46 * A great deal of data is accessed simply via its buffer cache buffer,
47 * which is mapped for the duration of the chain's lock. Hammer2 must
48 * implement its own buffer cache layer on top of the system layer to
49 * allow for different threads to lock different sub-block-sized buffers.
51 * When modifications are made to a chain a new filesystem block must be
52 * allocated. Multiple modifications do not typically allocate new blocks
53 * until the current block has been flushed. Flushes do not block the
54 * front-end unless the front-end operation crosses the current inode being
57 * The in-memory representation may remain cached (for example in order to
58 * placemark clustering locks) even after the related data has been
62 #ifndef _VFS_HAMMER2_HAMMER2_H_
63 #define _VFS_HAMMER2_HAMMER2_H_
66 #include <sys/param.h>
68 #include <sys/types.h>
70 #include <sys/kernel.h>
74 #include <sys/systm.h>
77 #include <sys/malloc.h>
78 #include <sys/mount.h>
79 #include <sys/vnode.h>
81 #include <sys/mountctl.h>
84 #include <sys/thread.h>
85 #include <sys/globaldata.h>
86 #include <sys/lockf.h>
88 #include <sys/queue.h>
89 #include <sys/limits.h>
91 #include <sys/mutex.h>
93 #include <sys/kern_syscall.h>
97 #include <sys/signal2.h>
99 #include <sys/mutex2.h>
100 #include <sys/thread2.h>
103 #include "hammer2_xxhash.h"
104 #include "hammer2_disk.h"
105 #include "hammer2_mount.h"
106 #include "hammer2_ioctl.h"
110 struct hammer2_chain
;
111 struct hammer2_cluster
;
112 struct hammer2_inode
;
116 struct hammer2_state
;
118 struct hammer2_thread
;
122 * Mutex and lock shims. Hammer2 requires support for asynchronous and
123 * abortable locks, and both exclusive and shared spinlocks. Normal
124 * synchronous non-abortable locks can be substituted for spinlocks.
126 typedef mtx_t hammer2_mtx_t
;
127 typedef mtx_link_t hammer2_mtx_link_t
;
128 typedef mtx_state_t hammer2_mtx_state_t
;
130 typedef struct spinlock hammer2_spin_t
;
132 #define hammer2_mtx_ex mtx_lock_ex_quick
133 #define hammer2_mtx_sh mtx_lock_sh_quick
134 #define hammer2_mtx_sh_again mtx_lock_sh_again
135 #define hammer2_mtx_unlock mtx_unlock
136 #define hammer2_mtx_downgrade mtx_downgrade
137 #define hammer2_mtx_owned mtx_owned
138 #define hammer2_mtx_init mtx_init
139 #define hammer2_mtx_temp_release mtx_lock_temp_release
140 #define hammer2_mtx_temp_restore mtx_lock_temp_restore
141 #define hammer2_mtx_refs mtx_lockrefs
143 #define hammer2_spin_init spin_init
144 #define hammer2_spin_sh spin_lock_shared
145 #define hammer2_spin_ex spin_lock
146 #define hammer2_spin_unsh spin_unlock_shared
147 #define hammer2_spin_unex spin_unlock
149 TAILQ_HEAD(hammer2_xop_list
, hammer2_xop_head
);
150 TAILQ_HEAD(hammer2_chain_list
, hammer2_chain
);
152 typedef struct hammer2_xop_list hammer2_xop_list_t
;
156 * General lock support
160 hammer2_mtx_upgrade_try(hammer2_mtx_t
*mtx
)
162 return mtx_upgrade_try(mtx
);
168 * The xid tracks internal transactional updates.
170 * XXX fix-me, really needs to be 64-bits
172 typedef uint32_t hammer2_xid_t
;
174 #define HAMMER2_XID_MIN 0x00000000U
175 #define HAMMER2_XID_MAX 0x7FFFFFFFU
177 #define HAMMER2_LIMIT_DIRTY_CHAINS (65536)
180 * The chain structure tracks a portion of the media topology from the
181 * root (volume) down. Chains represent volumes, inodes, indirect blocks,
182 * data blocks, and freemap nodes and leafs.
184 * The chain structure utilizes a simple singly-homed topology and the
185 * chain's in-memory topology will move around as the chains do, due mainly
186 * to renames and indirect block creation.
188 * Block Table Updates
190 * Block table updates for insertions and updates are delayed until the
191 * flush. This allows us to avoid having to modify the parent chain
192 * all the way to the root.
194 * Block table deletions are performed immediately (modifying the parent
195 * in the process) because the flush code uses the chain structure to
196 * track delayed updates and the chain will be (likely) gone or moved to
197 * another location in the topology after a deletion.
199 * A prior iteration of the code tried to keep the relationship intact
200 * on deletes by doing a delete-duplicate operation on the chain, but
201 * it added way too much complexity to the codebase.
203 * Flush Synchronization
205 * The flush code must flush modified chains bottom-up. Because chain
206 * structures can shift around and are NOT topologically stable,
207 * modified chains are independently indexed for the flush. As the flush
208 * runs it modifies (or further modifies) and updates the parents,
209 * propagating the flush all the way to the volume root.
211 * Modifying front-end operations can occur during a flush but will block
212 * in two cases: (1) when the front-end tries to operate on the inode
213 * currently in the midst of being flushed and (2) if the front-end
214 * crosses an inode currently being flushed (such as during a rename).
215 * So, for example, if you rename directory "x" to "a/b/c/d/e/f/g/x" and
216 * the flusher is currently working on "a/b/c", the rename will block
217 * temporarily in order to ensure that "x" exists in one place or the
220 * Meta-data statistics are updated by the flusher. The front-end will
221 * make estimates but meta-data must be fully synchronized only during a
222 * flush in order to ensure that it remains correct across a crash.
224 * Multiple flush synchronizations can theoretically be in-flight at the
225 * same time but the implementation is not coded to handle the case and
226 * currently serializes them.
230 * Snapshots currently require the subdirectory tree being snapshotted
231 * to be flushed. The snapshot then creates a new super-root inode which
232 * copies the flushed blockdata of the directory or file that was
237 * - Note that the radix tree runs in powers of 2 only so sub-trees
238 * cannot straddle edges.
240 RB_HEAD(hammer2_chain_tree
, hammer2_chain
);
241 TAILQ_HEAD(h2_flush_list
, hammer2_chain
);
242 TAILQ_HEAD(h2_core_list
, hammer2_chain
);
243 TAILQ_HEAD(h2_iocb_list
, hammer2_iocb
);
245 #define CHAIN_CORE_DELETE_BMAP_ENTRIES \
246 (HAMMER2_PBUFSIZE / sizeof(hammer2_blockref_t) / sizeof(uint32_t))
249 * Core topology for chain (embedded in chain). Protected by a spinlock.
251 struct hammer2_chain_core
{
253 struct hammer2_chain_tree rbtree
; /* sub-chains */
254 int live_zero
; /* blockref array opt */
255 u_int live_count
; /* live (not deleted) chains in tree */
256 u_int chain_count
; /* live + deleted chains under core */
257 int generation
; /* generation number (inserts only) */
260 typedef struct hammer2_chain_core hammer2_chain_core_t
;
262 RB_HEAD(hammer2_io_tree
, hammer2_io
);
265 * IOCB - IO callback (into chain, cluster, or manual request)
267 struct hammer2_iocb
{
268 TAILQ_ENTRY(hammer2_iocb
) entry
;
269 void (*callback
)(struct hammer2_iocb
*iocb
);
270 struct hammer2_io
*dio
;
271 struct hammer2_chain
*chain
;
280 typedef struct hammer2_iocb hammer2_iocb_t
;
282 #define HAMMER2_IOCB_INTERLOCK 0x00000001
283 #define HAMMER2_IOCB_ONQ 0x00000002
284 #define HAMMER2_IOCB_DONE 0x00000004
285 #define HAMMER2_IOCB_INPROG 0x00000008
286 #define HAMMER2_IOCB_UNUSED10 0x00000010
287 #define HAMMER2_IOCB_QUICK 0x00010000
288 #define HAMMER2_IOCB_ZERO 0x00020000
289 #define HAMMER2_IOCB_READ 0x00040000
290 #define HAMMER2_IOCB_WAKEUP 0x00080000
293 * DIO - Management structure wrapping system buffer cache.
295 * Used for multiple purposes including concurrent management
296 * if small requests by chains into larger DIOs.
299 RB_ENTRY(hammer2_io
) rbnode
; /* indexed by device offset */
300 struct h2_iocb_list iocbq
;
301 struct spinlock spin
;
302 struct hammer2_dev
*hmp
;
307 int act
; /* activity */
308 int btype
; /* approximate BREF_TYPE_* */
312 typedef struct hammer2_io hammer2_io_t
;
314 #define HAMMER2_DIO_INPROG 0x8000000000000000LLU /* bio in progress */
315 #define HAMMER2_DIO_GOOD 0x4000000000000000LLU /* dio->bp is stable */
316 #define HAMMER2_DIO_WAITING 0x2000000000000000LLU /* wait on INPROG */
317 #define HAMMER2_DIO_DIRTY 0x1000000000000000LLU /* flush last drop */
318 #define HAMMER2_DIO_INVALOK 0x0800000000000000LLU /* ok to inval */
319 #define HAMMER2_DIO_INVAL 0x0400000000000000LLU /* inval request */
321 #define HAMMER2_DIO_MASK 0x00FFFFFFFFFFFFFFLLU
323 #define HAMMER2_DIO_INVALBITS (HAMMER2_DIO_INVAL | HAMMER2_DIO_INVALOK)
326 * Primary chain structure keeps track of the topology in-memory.
328 struct hammer2_chain
{
330 hammer2_chain_core_t core
;
331 RB_ENTRY(hammer2_chain
) rbnode
; /* live chain(s) */
332 hammer2_blockref_t bref
;
333 struct hammer2_chain
*parent
;
334 struct hammer2_state
*state
; /* if active cache msg */
335 struct hammer2_dev
*hmp
;
336 struct hammer2_pfs
*pmp
; /* A PFS or super-root (spmp) */
338 hammer2_io_t
*dio
; /* physical data buffer */
339 u_int bytes
; /* physical data size */
343 int error
; /* on-lock data error state */
344 int persist_refs
; /* (aka ip->cluster) */
346 hammer2_media_data_t
*data
; /* data pointer shortcut */
347 TAILQ_ENTRY(hammer2_chain
) flush_node
; /* flush list */
348 TAILQ_ENTRY(hammer2_chain
) lru_node
; /* 0-refs LRU */
351 typedef struct hammer2_chain hammer2_chain_t
;
353 int hammer2_chain_cmp(hammer2_chain_t
*chain1
, hammer2_chain_t
*chain2
);
354 RB_PROTOTYPE(hammer2_chain_tree
, hammer2_chain
, rbnode
, hammer2_chain_cmp
);
357 * Special notes on flags:
359 * INITIAL - This flag allows a chain to be created and for storage to
360 * be allocated without having to immediately instantiate the
361 * related buffer. The data is assumed to be all-zeros. It
362 * is primarily used for indirect blocks.
364 * MODIFIED - The chain's media data has been modified. Prevents chain
365 * free on lastdrop if still in the topology.
367 * UPDATE - Chain might not be modified but parent blocktable needs
368 * an update. Prevents chain free on lastdrop if still in
371 * FICTITIOUS - Faked chain as a placeholder for an error condition. This
372 * chain is unsuitable for I/O.
374 * BMAPPED - Indicates that the chain is present in the parent blockmap.
376 * BMAPUPD - Indicates that the chain is present but needs to be updated
377 * in the parent blockmap.
379 #define HAMMER2_CHAIN_MODIFIED 0x00000001 /* dirty chain data */
380 #define HAMMER2_CHAIN_ALLOCATED 0x00000002 /* kmalloc'd chain */
381 #define HAMMER2_CHAIN_DESTROY 0x00000004
382 #define HAMMER2_CHAIN_DEDUP 0x00000008 /* recorded for dedup */
383 #define HAMMER2_CHAIN_DELETED 0x00000010 /* deleted chain */
384 #define HAMMER2_CHAIN_INITIAL 0x00000020 /* initial create */
385 #define HAMMER2_CHAIN_UPDATE 0x00000040 /* need parent update */
386 #define HAMMER2_CHAIN_DEFERRED 0x00000080 /* flush depth defer */
387 #define HAMMER2_CHAIN_TESTEDGOOD 0x00000100 /* crc tested good */
388 #define HAMMER2_CHAIN_ONFLUSH 0x00000200 /* on a flush list */
389 #define HAMMER2_CHAIN_FICTITIOUS 0x00000400 /* unsuitable for I/O */
390 #define HAMMER2_CHAIN_VOLUMESYNC 0x00000800 /* needs volume sync */
391 #define HAMMER2_CHAIN_DELAYED 0x00001000 /* delayed flush */
392 #define HAMMER2_CHAIN_COUNTEDBREFS 0x00002000 /* block table stats */
393 #define HAMMER2_CHAIN_ONRBTREE 0x00004000 /* on parent RB tree */
394 #define HAMMER2_CHAIN_ONLRU 0x00008000 /* on LRU list */
395 #define HAMMER2_CHAIN_EMBEDDED 0x00010000 /* embedded data */
396 #define HAMMER2_CHAIN_RELEASE 0x00020000 /* don't keep around */
397 #define HAMMER2_CHAIN_BMAPPED 0x00040000 /* present in blkmap */
398 #define HAMMER2_CHAIN_BMAPUPD 0x00080000 /* +needs updating */
399 #define HAMMER2_CHAIN_IOINPROG 0x00100000 /* I/O interlock */
400 #define HAMMER2_CHAIN_IOSIGNAL 0x00200000 /* I/O interlock */
401 #define HAMMER2_CHAIN_PFSBOUNDARY 0x00400000 /* super->pfs inode */
403 #define HAMMER2_CHAIN_FLUSH_MASK (HAMMER2_CHAIN_MODIFIED | \
404 HAMMER2_CHAIN_UPDATE | \
405 HAMMER2_CHAIN_ONFLUSH | \
406 HAMMER2_CHAIN_DESTROY)
409 * Hammer2 error codes, used by chain->error and cluster->error. The error
410 * code is typically set on-lock unless no I/O was requested, and set on
411 * I/O otherwise. If set for a cluster it generally means that the cluster
412 * code could not find a valid copy to present.
414 * IO - An I/O error occurred
415 * CHECK - I/O succeeded but did not match the check code
416 * INCOMPLETE - A cluster is not complete enough to use, or
417 * a chain cannot be loaded because its parent has an error.
419 * NOTE: API allows callers to check zero/non-zero to determine if an error
422 * NOTE: Chain's data field is usually NULL on an IO error but not necessarily
423 * NULL on other errors. Check chain->error, not chain->data.
425 #define HAMMER2_ERROR_NONE 0
426 #define HAMMER2_ERROR_IO 1 /* device I/O error */
427 #define HAMMER2_ERROR_CHECK 2 /* check code mismatch */
428 #define HAMMER2_ERROR_INCOMPLETE 3 /* incomplete cluster */
429 #define HAMMER2_ERROR_DEPTH 4 /* temporary depth limit */
432 * Flags passed to hammer2_chain_lookup() and hammer2_chain_next()
435 * NOLOCK - Input and output chains are referenced only and not
436 * locked. Output chain might be temporarily locked
439 * NODATA - Asks that the chain->data not be resolved in order
442 * NODIRECT - Prevents a lookup of offset 0 in an inode from returning
443 * the inode itself if the inode is in DIRECTDATA mode
444 * (i.e. file is <= 512 bytes). Used by the synchronization
445 * code to prevent confusion.
447 * SHARED - The input chain is expected to be locked shared,
448 * and the output chain is locked shared.
450 * MATCHIND - Allows an indirect block / freemap node to be returned
451 * when the passed key range matches the radix. Remember
452 * that key_end is inclusive (e.g. {0x000,0xFFF},
453 * not {0x000,0x1000}).
455 * (Cannot be used for remote or cluster ops).
457 * ALLNODES - Allows NULL focus.
459 * ALWAYS - Always resolve the data. If ALWAYS and NODATA are both
460 * missing, bulk file data is not resolved but inodes and
461 * other meta-data will.
463 * NOUNLOCK - Used by hammer2_chain_next() to leave the lock on
464 * the input chain intact. The chain is still dropped.
465 * This allows the caller to add a reference to the chain
466 * and retain it in a locked state (used by the
467 * XOP/feed/collect code).
469 #define HAMMER2_LOOKUP_NOLOCK 0x00000001 /* ref only */
470 #define HAMMER2_LOOKUP_NODATA 0x00000002 /* data left NULL */
471 #define HAMMER2_LOOKUP_NODIRECT 0x00000004 /* no offset=0 DD */
472 #define HAMMER2_LOOKUP_SHARED 0x00000100
473 #define HAMMER2_LOOKUP_MATCHIND 0x00000200 /* return all chains */
474 #define HAMMER2_LOOKUP_ALLNODES 0x00000400 /* allow NULL focus */
475 #define HAMMER2_LOOKUP_ALWAYS 0x00000800 /* resolve data */
476 #define HAMMER2_LOOKUP_NOUNLOCK 0x00001000 /* leave lock intact */
479 * Flags passed to hammer2_chain_modify() and hammer2_chain_resize()
481 * NOTE: OPTDATA allows us to avoid instantiating buffers for INDIRECT
482 * blocks in the INITIAL-create state.
484 #define HAMMER2_MODIFY_OPTDATA 0x00000002 /* data can be NULL */
485 #define HAMMER2_MODIFY_NO_MODIFY_TID 0x00000004
486 #define HAMMER2_MODIFY_UNUSED0008 0x00000008
489 * Flags passed to hammer2_chain_lock()
491 * NOTE: RDONLY is set to optimize cluster operations when *no* modifications
492 * will be made to either the cluster being locked or any underlying
493 * cluster. It allows the cluster to lock and access data for a subset
494 * of available nodes instead of all available nodes.
496 #define HAMMER2_RESOLVE_NEVER 1
497 #define HAMMER2_RESOLVE_MAYBE 2
498 #define HAMMER2_RESOLVE_ALWAYS 3
499 #define HAMMER2_RESOLVE_MASK 0x0F
501 #define HAMMER2_RESOLVE_SHARED 0x10 /* request shared lock */
502 #define HAMMER2_RESOLVE_LOCKAGAIN 0x20 /* another shared lock */
503 #define HAMMER2_RESOLVE_RDONLY 0x40 /* higher level op flag */
506 * Flags passed to hammer2_chain_delete()
508 #define HAMMER2_DELETE_PERMANENT 0x0001
511 * Flags passed to hammer2_chain_insert() or hammer2_chain_rename()
513 #define HAMMER2_INSERT_PFSROOT 0x0004
516 * Flags passed to hammer2_chain_delete_duplicate()
518 #define HAMMER2_DELDUP_RECORE 0x0001
521 * Cluster different types of storage together for allocations
523 #define HAMMER2_FREECACHE_INODE 0
524 #define HAMMER2_FREECACHE_INDIR 1
525 #define HAMMER2_FREECACHE_DATA 2
526 #define HAMMER2_FREECACHE_UNUSED3 3
527 #define HAMMER2_FREECACHE_TYPES 4
530 * hammer2_freemap_alloc() block preference
532 #define HAMMER2_OFF_NOPREF ((hammer2_off_t)-1)
535 * BMAP read-ahead maximum parameters
537 #define HAMMER2_BMAP_COUNT 16 /* max bmap read-ahead */
538 #define HAMMER2_BMAP_BYTES (HAMMER2_PBUFSIZE * HAMMER2_BMAP_COUNT)
541 * hammer2_freemap_adjust()
543 #define HAMMER2_FREEMAP_DORECOVER 1
544 #define HAMMER2_FREEMAP_DOMAYFREE 2
545 #define HAMMER2_FREEMAP_DOREALFREE 3
548 * HAMMER2 cluster - A set of chains representing the same entity.
550 * hammer2_cluster typically represents a temporary set of representitive
551 * chains. The one exception is that a hammer2_cluster is embedded in
552 * hammer2_inode. This embedded cluster is ONLY used to track the
553 * representitive chains and cannot be directly locked.
555 * A cluster is usually temporary (and thus per-thread) for locking purposes,
556 * allowing us to embed the asynchronous storage required for cluster
557 * operations in the cluster itself and adjust the state and status without
558 * having to worry too much about SMP issues.
560 * The exception is the cluster embedded in the hammer2_inode structure.
561 * This is used to cache the cluster state on an inode-by-inode basis.
562 * Individual hammer2_chain structures not incorporated into clusters might
563 * also stick around to cache miscellanious elements.
565 * Because the cluster is a 'working copy' and is usually subject to cluster
566 * quorum rules, it is quite possible for us to end up with an insufficient
567 * number of live chains to execute an operation. If an insufficient number
568 * of chains remain in a working copy, the operation may have to be
569 * downgraded, retried, stall until the requisit number of chains are
570 * available, or possibly even error out depending on the mount type.
572 * A cluster's focus is set when it is locked. The focus can only be set
573 * to a chain still part of the synchronized set.
575 #define HAMMER2_MAXCLUSTER 8
576 #define HAMMER2_XOPMASK_CLUSTER ((1U << HAMMER2_MAXCLUSTER) - 1)
577 #define HAMMER2_XOPFIFO 16
578 #define HAMMER2_XOPFIFO_MASK (HAMMER2_XOPFIFO - 1)
579 #define HAMMER2_XOPGROUPS 32
580 #define HAMMER2_XOPGROUPS_MASK (HAMMER2_XOPGROUPS - 1)
581 #define HAMMER2_XOPMASK_VOP 0x80000000U
582 #define HAMMER2_XOPMASK_FIFOW 0x40000000U
584 #define HAMMER2_XOPMASK_ALLDONE (HAMMER2_XOPMASK_VOP | HAMMER2_XOPMASK_CLUSTER)
586 #define HAMMER2_SPECTHREADS 1 /* sync */
588 struct hammer2_cluster_item
{
589 hammer2_chain_t
*chain
;
595 typedef struct hammer2_cluster_item hammer2_cluster_item_t
;
598 * INVALID - Invalid for focus, i.e. not part of synchronized set.
599 * Once set, this bit is sticky across operations.
601 * FEMOD - Indicates that front-end modifying operations can
602 * mess with this entry and MODSYNC will copy also
605 #define HAMMER2_CITEM_INVALID 0x00000001
606 #define HAMMER2_CITEM_FEMOD 0x00000002
607 #define HAMMER2_CITEM_NULL 0x00000004
609 struct hammer2_cluster
{
610 int refs
; /* track for deallocation */
612 struct hammer2_pfs
*pmp
;
615 int error
; /* error code valid on lock */
618 hammer2_chain_t
*focus
; /* current focus (or mod) */
619 hammer2_cluster_item_t array
[HAMMER2_MAXCLUSTER
];
622 typedef struct hammer2_cluster hammer2_cluster_t
;
625 * WRHARD - Hard mounts can write fully synchronized
626 * RDHARD - Hard mounts can read fully synchronized
627 * UNHARD - Unsynchronized masters present
628 * NOHARD - No masters visible
629 * WRSOFT - Soft mounts can write to at least the SOFT_MASTER
630 * RDSOFT - Soft mounts can read from at least a SOFT_SLAVE
631 * UNSOFT - Unsynchronized slaves present
632 * NOSOFT - No slaves visible
633 * RDSLAVE - slaves are accessible (possibly unsynchronized or remote).
634 * MSYNCED - All masters are fully synchronized
635 * SSYNCED - All known local slaves are fully synchronized to masters
637 * All available masters are always incorporated. All PFSs belonging to a
638 * cluster (master, slave, copy, whatever) always try to synchronize the
639 * total number of known masters in the PFSs root inode.
641 * A cluster might have access to many slaves, copies, or caches, but we
642 * have a limited number of cluster slots. Any such elements which are
643 * directly mounted from block device(s) will always be incorporated. Note
644 * that SSYNCED only applies to such elements which are directly mounted,
645 * not to any remote slaves, copies, or caches that could be available. These
646 * bits are used to monitor and drive our synchronization threads.
648 * When asking the question 'is any data accessible at all', then a simple
649 * test against (RDHARD|RDSOFT|RDSLAVE) gives you the answer. If any of
650 * these bits are set the object can be read with certain caveats:
651 * RDHARD - no caveats. RDSOFT - authoritative but might not be synchronized.
652 * and RDSLAVE - not authoritative, has some data but it could be old or
655 * When both soft and hard mounts are available, data will be read and written
656 * via the soft mount only. But all might be in the cluster because
657 * background synchronization threads still need to do their work.
659 #define HAMMER2_CLUSTER_INODE 0x00000001 /* embedded in inode struct */
660 #define HAMMER2_CLUSTER_UNUSED2 0x00000002
661 #define HAMMER2_CLUSTER_LOCKED 0x00000004 /* cluster lks not recursive */
662 #define HAMMER2_CLUSTER_WRHARD 0x00000100 /* hard-mount can write */
663 #define HAMMER2_CLUSTER_RDHARD 0x00000200 /* hard-mount can read */
664 #define HAMMER2_CLUSTER_UNHARD 0x00000400 /* unsynchronized masters */
665 #define HAMMER2_CLUSTER_NOHARD 0x00000800 /* no masters visible */
666 #define HAMMER2_CLUSTER_WRSOFT 0x00001000 /* soft-mount can write */
667 #define HAMMER2_CLUSTER_RDSOFT 0x00002000 /* soft-mount can read */
668 #define HAMMER2_CLUSTER_UNSOFT 0x00004000 /* unsynchronized slaves */
669 #define HAMMER2_CLUSTER_NOSOFT 0x00008000 /* no slaves visible */
670 #define HAMMER2_CLUSTER_MSYNCED 0x00010000 /* all masters synchronized */
671 #define HAMMER2_CLUSTER_SSYNCED 0x00020000 /* known slaves synchronized */
673 #define HAMMER2_CLUSTER_ANYDATA ( HAMMER2_CLUSTER_RDHARD | \
674 HAMMER2_CLUSTER_RDSOFT | \
675 HAMMER2_CLUSTER_RDSLAVE)
677 #define HAMMER2_CLUSTER_RDOK ( HAMMER2_CLUSTER_RDHARD | \
678 HAMMER2_CLUSTER_RDSOFT)
680 #define HAMMER2_CLUSTER_WROK ( HAMMER2_CLUSTER_WRHARD | \
681 HAMMER2_CLUSTER_WRSOFT)
683 #define HAMMER2_CLUSTER_ZFLAGS ( HAMMER2_CLUSTER_WRHARD | \
684 HAMMER2_CLUSTER_RDHARD | \
685 HAMMER2_CLUSTER_WRSOFT | \
686 HAMMER2_CLUSTER_RDSOFT | \
687 HAMMER2_CLUSTER_MSYNCED | \
688 HAMMER2_CLUSTER_SSYNCED)
691 * Helper functions (cluster must be locked for flags to be valid).
695 hammer2_cluster_rdok(hammer2_cluster_t
*cluster
)
697 return (cluster
->flags
& HAMMER2_CLUSTER_RDOK
);
702 hammer2_cluster_wrok(hammer2_cluster_t
*cluster
)
704 return (cluster
->flags
& HAMMER2_CLUSTER_WROK
);
707 RB_HEAD(hammer2_inode_tree
, hammer2_inode
);
712 * NOTE: The inode-embedded cluster is never used directly for I/O (since
713 * it may be shared). Instead it will be replicated-in and synchronized
714 * back out if changed.
716 struct hammer2_inode
{
717 RB_ENTRY(hammer2_inode
) rbnode
; /* inumber lookup (HL) */
718 hammer2_mtx_t lock
; /* inode lock */
719 hammer2_mtx_t truncate_lock
; /* prevent truncates */
720 struct hammer2_pfs
*pmp
; /* PFS mount */
722 struct spinlock cluster_spin
; /* update cluster */
723 hammer2_cluster_t cluster
;
724 struct lockf advlock
;
726 u_int refs
; /* +vpref, +flushref */
727 uint8_t comp_heuristic
;
728 hammer2_inode_meta_t meta
; /* copy of meta-data */
732 typedef struct hammer2_inode hammer2_inode_t
;
735 * MODIFIED - Inode is in a modified state, ip->meta may have changes.
736 * RESIZED - Inode truncated (any) or inode extended beyond
739 #define HAMMER2_INODE_MODIFIED 0x0001
740 #define HAMMER2_INODE_SROOT 0x0002 /* kmalloc special case */
741 #define HAMMER2_INODE_RENAME_INPROG 0x0004
742 #define HAMMER2_INODE_ONRBTREE 0x0008
743 #define HAMMER2_INODE_RESIZED 0x0010 /* requires inode_fsync */
744 #define HAMMER2_INODE_ISDELETED 0x0020 /* deleted */
745 #define HAMMER2_INODE_ISUNLINKED 0x0040
746 #define HAMMER2_INODE_METAGOOD 0x0080 /* inode meta-data good */
747 #define HAMMER2_INODE_ONSIDEQ 0x0100 /* on side processing queue */
749 int hammer2_inode_cmp(hammer2_inode_t
*ip1
, hammer2_inode_t
*ip2
);
750 RB_PROTOTYPE2(hammer2_inode_tree
, hammer2_inode
, rbnode
, hammer2_inode_cmp
,
754 * inode-unlink side-structure
756 struct hammer2_inode_sideq
{
757 TAILQ_ENTRY(hammer2_inode_sideq
) entry
;
760 TAILQ_HEAD(h2_sideq_list
, hammer2_inode_sideq
);
762 typedef struct hammer2_inode_sideq hammer2_inode_sideq_t
;
765 * Transaction management sub-structure under hammer2_pfs
767 struct hammer2_trans
{
772 typedef struct hammer2_trans hammer2_trans_t
;
774 #define HAMMER2_TRANS_ISFLUSH 0x80000000 /* flush code */
775 #define HAMMER2_TRANS_BUFCACHE 0x40000000 /* bio strategy */
776 #define HAMMER2_TRANS_UNUSED20 0x20000000
777 #define HAMMER2_TRANS_FPENDING 0x10000000 /* flush pending */
778 #define HAMMER2_TRANS_WAITING 0x08000000 /* someone waiting */
779 #define HAMMER2_TRANS_MASK 0x00FFFFFF /* count mask */
781 #define HAMMER2_FREEMAP_HEUR_NRADIX 4 /* pwr 2 PBUFRADIX-MINIORADIX */
782 #define HAMMER2_FREEMAP_HEUR_TYPES 8
783 #define HAMMER2_FREEMAP_HEUR_SIZE (HAMMER2_FREEMAP_HEUR_NRADIX * \
784 HAMMER2_FREEMAP_HEUR_TYPES)
786 #define HAMMER2_DEDUP_HEUR_SIZE 65536
787 #define HAMMER2_DEDUP_HEUR_MASK (HAMMER2_DEDUP_HEUR_SIZE - 1)
789 #define HAMMER2_FLUSH_TOP 0x0001
790 #define HAMMER2_FLUSH_ALL 0x0002
794 * Hammer2 support thread element.
796 * Potentially many support threads can hang off of hammer2, primarily
797 * off the hammer2_pfs structure. Typically:
799 * td x Nodes A synchronization thread for each node.
800 * td x Nodes x workers Worker threads for frontend operations.
801 * td x 1 Bioq thread for logical buffer writes.
803 * In addition, the synchronization thread(s) associated with the
804 * super-root PFS (spmp) for a node is responsible for automatic bulkfree
807 struct hammer2_thread
{
808 struct hammer2_pfs
*pmp
;
809 struct hammer2_dev
*hmp
;
810 hammer2_xop_list_t xopq
;
814 int clindex
; /* cluster element index */
816 char *scratch
; /* MAXPHYS */
819 typedef struct hammer2_thread hammer2_thread_t
;
821 #define HAMMER2_THREAD_UNMOUNTING 0x0001 /* unmount request */
822 #define HAMMER2_THREAD_DEV 0x0002 /* related to dev, not pfs */
823 #define HAMMER2_THREAD_WAITING 0x0004 /* thread in idle tsleep */
824 #define HAMMER2_THREAD_REMASTER 0x0008 /* remaster request */
825 #define HAMMER2_THREAD_STOP 0x0010 /* exit request */
826 #define HAMMER2_THREAD_FREEZE 0x0020 /* force idle */
827 #define HAMMER2_THREAD_FROZEN 0x0040 /* thread is frozen */
828 #define HAMMER2_THREAD_XOPQ 0x0080 /* work pending */
829 #define HAMMER2_THREAD_STOPPED 0x0100 /* thread has stopped */
830 #define HAMMER2_THREAD_UNFREEZE 0x0200
832 #define HAMMER2_THREAD_WAKEUP_MASK (HAMMER2_THREAD_UNMOUNTING | \
833 HAMMER2_THREAD_REMASTER | \
834 HAMMER2_THREAD_STOP | \
835 HAMMER2_THREAD_FREEZE | \
839 * Support structure for dedup heuristic.
841 struct hammer2_dedup
{
842 hammer2_off_t data_off
;
848 typedef struct hammer2_dedup hammer2_dedup_t
;
851 * hammer2_xop - container for VOP/XOP operation (allocated, not on stack).
853 * This structure is used to distribute a VOP operation across multiple
854 * nodes. It provides a rendezvous for concurrent node execution and
855 * can be detached from the frontend operation to allow the frontend to
858 * This structure also sequences operations on up to three inodes.
860 typedef void (*hammer2_xop_func_t
)(hammer2_thread_t
*thr
,
861 union hammer2_xop
*xop
);
863 struct hammer2_xop_fifo
{
864 TAILQ_ENTRY(hammer2_xop_head
) entry
;
865 hammer2_chain_t
*array
[HAMMER2_XOPFIFO
];
866 int errors
[HAMMER2_XOPFIFO
];
870 hammer2_thread_t
*thr
;
873 typedef struct hammer2_xop_fifo hammer2_xop_fifo_t
;
875 #define HAMMER2_XOP_FIFO_RUN 0x0001
876 #define HAMMER2_XOP_FIFO_STALL 0x0002
878 struct hammer2_xop_head
{
879 hammer2_xop_func_t func
;
881 struct hammer2_inode
*ip1
;
882 struct hammer2_inode
*ip2
;
883 struct hammer2_inode
*ip3
;
884 uint32_t check_counter
;
890 hammer2_key_t collect_key
;
895 hammer2_xop_fifo_t collect
[HAMMER2_MAXCLUSTER
];
896 hammer2_cluster_t cluster
; /* help collections */
899 typedef struct hammer2_xop_head hammer2_xop_head_t
;
901 #define HAMMER2_XOP_CHKWAIT 0x00000001U
902 #define HAMMER2_XOP_CHKINC 0x00000002U
904 struct hammer2_xop_ipcluster
{
905 hammer2_xop_head_t head
;
908 struct hammer2_xop_strategy
{
909 hammer2_xop_head_t head
;
916 struct hammer2_xop_readdir
{
917 hammer2_xop_head_t head
;
921 struct hammer2_xop_nresolve
{
922 hammer2_xop_head_t head
;
923 hammer2_key_t lhc
; /* if name is NULL used lhc */
926 struct hammer2_xop_unlink
{
927 hammer2_xop_head_t head
;
932 struct hammer2_xop_nrename
{
933 hammer2_xop_head_t head
;
938 struct hammer2_xop_scanlhc
{
939 hammer2_xop_head_t head
;
943 struct hammer2_xop_scanall
{
944 hammer2_xop_head_t head
;
945 hammer2_key_t key_beg
; /* inclusive */
946 hammer2_key_t key_end
; /* inclusive */
951 struct hammer2_xop_lookup
{
952 hammer2_xop_head_t head
;
956 struct hammer2_xop_mkdirent
{
957 hammer2_xop_head_t head
;
958 hammer2_dirent_head_t dirent
;
962 struct hammer2_xop_create
{
963 hammer2_xop_head_t head
;
964 hammer2_inode_meta_t meta
; /* initial metadata */
969 struct hammer2_xop_destroy
{
970 hammer2_xop_head_t head
;
973 struct hammer2_xop_fsync
{
974 hammer2_xop_head_t head
;
975 hammer2_inode_meta_t meta
;
978 int clear_directdata
;
981 struct hammer2_xop_unlinkall
{
982 hammer2_xop_head_t head
;
983 hammer2_key_t key_beg
;
984 hammer2_key_t key_end
;
987 struct hammer2_xop_connect
{
988 hammer2_xop_head_t head
;
992 struct hammer2_xop_flush
{
993 hammer2_xop_head_t head
;
996 typedef struct hammer2_xop_readdir hammer2_xop_readdir_t
;
997 typedef struct hammer2_xop_nresolve hammer2_xop_nresolve_t
;
998 typedef struct hammer2_xop_unlink hammer2_xop_unlink_t
;
999 typedef struct hammer2_xop_nrename hammer2_xop_nrename_t
;
1000 typedef struct hammer2_xop_ipcluster hammer2_xop_ipcluster_t
;
1001 typedef struct hammer2_xop_strategy hammer2_xop_strategy_t
;
1002 typedef struct hammer2_xop_mkdirent hammer2_xop_mkdirent_t
;
1003 typedef struct hammer2_xop_create hammer2_xop_create_t
;
1004 typedef struct hammer2_xop_destroy hammer2_xop_destroy_t
;
1005 typedef struct hammer2_xop_fsync hammer2_xop_fsync_t
;
1006 typedef struct hammer2_xop_unlinkall hammer2_xop_unlinkall_t
;
1007 typedef struct hammer2_xop_scanlhc hammer2_xop_scanlhc_t
;
1008 typedef struct hammer2_xop_scanall hammer2_xop_scanall_t
;
1009 typedef struct hammer2_xop_lookup hammer2_xop_lookup_t
;
1010 typedef struct hammer2_xop_connect hammer2_xop_connect_t
;
1011 typedef struct hammer2_xop_flush hammer2_xop_flush_t
;
1014 hammer2_xop_head_t head
;
1015 hammer2_xop_ipcluster_t xop_ipcluster
;
1016 hammer2_xop_readdir_t xop_readdir
;
1017 hammer2_xop_nresolve_t xop_nresolve
;
1018 hammer2_xop_unlink_t xop_unlink
;
1019 hammer2_xop_nrename_t xop_nrename
;
1020 hammer2_xop_strategy_t xop_strategy
;
1021 hammer2_xop_mkdirent_t xop_mkdirent
;
1022 hammer2_xop_create_t xop_create
;
1023 hammer2_xop_destroy_t xop_destroy
;
1024 hammer2_xop_fsync_t xop_fsync
;
1025 hammer2_xop_unlinkall_t xop_unlinkall
;
1026 hammer2_xop_scanlhc_t xop_scanlhc
;
1027 hammer2_xop_scanall_t xop_scanall
;
1028 hammer2_xop_lookup_t xop_lookup
;
1029 hammer2_xop_flush_t xop_flush
;
1030 hammer2_xop_connect_t xop_connect
;
1033 typedef union hammer2_xop hammer2_xop_t
;
1036 * hammer2_xop_group - Manage XOP support threads.
1038 struct hammer2_xop_group
{
1039 hammer2_thread_t thrs
[HAMMER2_MAXCLUSTER
];
1042 typedef struct hammer2_xop_group hammer2_xop_group_t
;
1045 * flags to hammer2_xop_collect()
1047 #define HAMMER2_XOP_COLLECT_NOWAIT 0x00000001
1048 #define HAMMER2_XOP_COLLECT_WAITALL 0x00000002
1051 * flags to hammer2_xop_alloc()
1053 * MODIFYING - This is a modifying transaction, allocate a mtid.
1055 #define HAMMER2_XOP_MODIFYING 0x00000001
1056 #define HAMMER2_XOP_STRATEGY 0x00000002
1059 * Global (per partition) management structure, represents a hard block
1060 * device. Typically referenced by hammer2_chain structures when applicable.
1061 * Typically not used for network-managed elements.
1063 * Note that a single hammer2_dev can be indirectly tied to multiple system
1064 * mount points. There is no direct relationship. System mounts are
1065 * per-cluster-id, not per-block-device, and a single hard mount might contain
1066 * many PFSs and those PFSs might combine together in various ways to form
1067 * the set of available clusters.
1069 struct hammer2_dev
{
1070 struct vnode
*devvp
; /* device vnode */
1071 int ronly
; /* read-only mount */
1072 int mount_count
; /* number of actively mounted PFSs */
1073 TAILQ_ENTRY(hammer2_dev
) mntentry
; /* hammer2_mntlist */
1075 struct malloc_type
*mchain
;
1078 kdmsg_iocom_t iocom
; /* volume-level dmsg interface */
1079 struct spinlock io_spin
; /* iotree access */
1080 struct hammer2_io_tree iotree
;
1082 hammer2_chain_t vchain
; /* anchor chain (topology) */
1083 hammer2_chain_t fchain
; /* anchor chain (freemap) */
1084 struct spinlock list_spin
;
1085 struct h2_flush_list flushq
; /* flush seeds */
1086 struct hammer2_pfs
*spmp
; /* super-root pmp for transactions */
1087 struct lock vollk
; /* lockmgr lock */
1088 struct lock bulklk
; /* bulkfree operation lock */
1089 struct lock bflock
; /* bulk-free manual function lock */
1090 hammer2_off_t heur_freemap
[HAMMER2_FREEMAP_HEUR_SIZE
];
1091 hammer2_dedup_t heur_dedup
[HAMMER2_DEDUP_HEUR_SIZE
];
1092 int volhdrno
; /* last volhdrno written */
1093 uint32_t hflags
; /* HMNT2 flags applicable to device */
1094 hammer2_thread_t bfthr
; /* bulk-free thread */
1095 char devrepname
[64]; /* for kprintf */
1096 hammer2_ioc_bulkfree_t bflast
; /* stats for last bulkfree run */
1097 hammer2_volume_data_t voldata
;
1098 hammer2_volume_data_t volsync
; /* synchronized voldata */
1101 typedef struct hammer2_dev hammer2_dev_t
;
1104 * Helper functions (cluster must be locked for flags to be valid).
1108 hammer2_chain_rdok(hammer2_chain_t
*chain
)
1110 return (chain
->error
== 0);
1115 hammer2_chain_wrok(hammer2_chain_t
*chain
)
1117 return (chain
->error
== 0 && chain
->hmp
->ronly
== 0);
1121 * Per-cluster management structure. This structure will be tied to a
1122 * system mount point if the system is mounting the PFS, but is also used
1123 * to manage clusters encountered during the super-root scan or received
1124 * via LNK_SPANs that might not be mounted.
1126 * This structure is also used to represent the super-root that hangs off
1127 * of a hard mount point. The super-root is not really a cluster element.
1128 * In this case the spmp_hmp field will be non-NULL. It's just easier to do
1129 * this than to special case super-root manipulation in the hammer2_chain*
1130 * code as being only hammer2_dev-related.
1132 * pfs_mode and pfs_nmasters are rollup fields which critically describes
1133 * how elements of the cluster act on the cluster. pfs_mode is only applicable
1134 * when a PFS is mounted by the system. pfs_nmasters is our best guess as to
1135 * how many masters have been configured for a cluster and is always
1136 * applicable. pfs_types[] is an array with 1:1 correspondance to the
1137 * iroot cluster and describes the PFS types of the nodes making up the
1140 * WARNING! Portions of this structure have deferred initialization. In
1141 * particular, if not mounted there will be no wthread.
1142 * umounted network PFSs will also be missing iroot and numerous
1143 * other fields will not be initialized prior to mount.
1145 * Synchronization threads are chain-specific and only applicable
1146 * to local hard PFS entries. A hammer2_pfs structure may contain
1147 * more than one when multiple hard PFSs are present on the local
1148 * machine which require synchronization monitoring. Most PFSs
1149 * (such as snapshots) are 1xMASTER PFSs which do not need a
1150 * synchronization thread.
1152 * WARNING! The chains making up pfs->iroot's cluster are accounted for in
1153 * hammer2_dev->mount_count when the pfs is associated with a mount
1156 struct hammer2_pfs
{
1158 TAILQ_ENTRY(hammer2_pfs
) mntentry
; /* hammer2_pfslist */
1160 hammer2_dev_t
*spmp_hmp
; /* only if super-root pmp */
1161 hammer2_dev_t
*force_local
; /* only if 'local' mount */
1162 hammer2_inode_t
*iroot
; /* PFS root inode */
1163 uint8_t pfs_types
[HAMMER2_MAXCLUSTER
];
1164 char *pfs_names
[HAMMER2_MAXCLUSTER
];
1165 hammer2_dev_t
*pfs_hmps
[HAMMER2_MAXCLUSTER
];
1166 hammer2_trans_t trans
;
1167 struct lock lock
; /* PFS lock for certain ops */
1168 struct lock lock_nlink
; /* rename and nlink lock */
1169 struct netexport export
; /* nfs export */
1170 int ronly
; /* read-only mount */
1171 int hflags
; /* pfs-specific mount flags */
1172 struct malloc_type
*minode
;
1173 struct malloc_type
*mmsg
;
1174 struct spinlock inum_spin
; /* inumber lookup */
1175 struct hammer2_inode_tree inum_tree
; /* (not applicable to spmp) */
1176 struct spinlock lru_spin
; /* inumber lookup */
1177 struct hammer2_chain_list lru_list
; /* chains on LRU */
1178 int lru_count
; /* #of chains on LRU */
1179 hammer2_tid_t modify_tid
; /* modify transaction id */
1180 hammer2_tid_t inode_tid
; /* inode allocator */
1181 uint8_t pfs_nmasters
; /* total masters */
1182 uint8_t pfs_mode
; /* operating mode PFSMODE */
1187 uint32_t inmem_dirty_chains
;
1188 int count_lwinprog
; /* logical write in prog */
1189 struct spinlock list_spin
;
1190 struct h2_sideq_list sideq
; /* last-close dirty/unlink */
1191 hammer2_thread_t sync_thrs
[HAMMER2_MAXCLUSTER
];
1192 uint32_t cluster_flags
; /* cached cluster flags */
1193 int has_xop_threads
;
1194 struct spinlock xop_spin
; /* xop sequencer */
1195 hammer2_xop_group_t xop_groups
[HAMMER2_XOPGROUPS
];
1198 typedef struct hammer2_pfs hammer2_pfs_t
;
1200 TAILQ_HEAD(hammer2_pfslist
, hammer2_pfs
);
1202 #define HAMMER2_LRU_LIMIT 1024 /* per pmp lru_list */
1204 #define HAMMER2_DIRTYCHAIN_WAITING 0x80000000
1205 #define HAMMER2_DIRTYCHAIN_MASK 0x7FFFFFFF
1207 #define HAMMER2_LWINPROG_WAITING 0x80000000
1208 #define HAMMER2_LWINPROG_WAITING0 0x40000000
1209 #define HAMMER2_LWINPROG_MASK 0x3FFFFFFF
1212 * hammer2_cluster_check
1214 #define HAMMER2_CHECK_NULL 0x00000001
1219 #define HAMMER2_BULK_ABORT 0x00000001
1224 #if defined(_KERNEL)
1226 MALLOC_DECLARE(M_HAMMER2
);
1228 #define VTOI(vp) ((hammer2_inode_t *)(vp)->v_data)
1229 #define ITOV(ip) ((ip)->vp)
1232 * Currently locked chains retain the locked buffer cache buffer for
1233 * indirect blocks, and indirect blocks can be one of two sizes. The
1234 * device buffer has to match the case to avoid deadlocking recursive
1235 * chains that might otherwise try to access different offsets within
1236 * the same device buffer.
1240 hammer2_devblkradix(int radix
)
1243 if (radix
<= HAMMER2_LBUFRADIX
) {
1244 return (HAMMER2_LBUFRADIX
);
1246 return (HAMMER2_PBUFRADIX
);
1249 return (HAMMER2_PBUFRADIX
);
1253 * XXX almost time to remove this. DIO uses PBUFSIZE exclusively now.
1257 hammer2_devblksize(size_t bytes
)
1260 if (bytes
<= HAMMER2_LBUFSIZE
) {
1261 return(HAMMER2_LBUFSIZE
);
1263 KKASSERT(bytes
<= HAMMER2_PBUFSIZE
&&
1264 (bytes
^ (bytes
- 1)) == ((bytes
<< 1) - 1));
1265 return (HAMMER2_PBUFSIZE
);
1268 return (HAMMER2_PBUFSIZE
);
1274 MPTOPMP(struct mount
*mp
)
1276 return ((hammer2_pfs_t
*)mp
->mnt_data
);
1279 extern struct vop_ops hammer2_vnode_vops
;
1280 extern struct vop_ops hammer2_spec_vops
;
1281 extern struct vop_ops hammer2_fifo_vops
;
1282 extern struct hammer2_pfslist hammer2_pfslist
;
1283 extern struct lock hammer2_mntlk
;
1286 extern int hammer2_debug
;
1287 extern int hammer2_cluster_read
;
1288 extern int hammer2_cluster_write
;
1289 extern int hammer2_dedup_enable
;
1290 extern int hammer2_inval_enable
;
1291 extern int hammer2_flush_pipe
;
1292 extern int hammer2_synchronous_flush
;
1293 extern int hammer2_dio_count
;
1294 extern long hammer2_chain_allocs
;
1295 extern long hammer2_chain_frees
;
1296 extern long hammer2_limit_dirty_chains
;
1297 extern long hammer2_count_modified_chains
;
1298 extern long hammer2_iod_invals
;
1299 extern long hammer2_iod_file_read
;
1300 extern long hammer2_iod_meta_read
;
1301 extern long hammer2_iod_indr_read
;
1302 extern long hammer2_iod_fmap_read
;
1303 extern long hammer2_iod_volu_read
;
1304 extern long hammer2_iod_file_write
;
1305 extern long hammer2_iod_file_wembed
;
1306 extern long hammer2_iod_file_wzero
;
1307 extern long hammer2_iod_file_wdedup
;
1308 extern long hammer2_iod_meta_write
;
1309 extern long hammer2_iod_indr_write
;
1310 extern long hammer2_iod_fmap_write
;
1311 extern long hammer2_iod_volu_write
;
1313 extern long hammer2_check_xxhash64
;
1314 extern long hammer2_check_icrc32
;
1316 extern struct objcache
*cache_buffer_read
;
1317 extern struct objcache
*cache_buffer_write
;
1318 extern struct objcache
*cache_xops
;
1323 #define hammer2_icrc32(buf, size) iscsi_crc32((buf), (size))
1324 #define hammer2_icrc32c(buf, size, crc) iscsi_crc32_ext((buf), (size), (crc))
1326 int hammer2_signal_check(time_t *timep
);
1327 const char *hammer2_error_str(int error
);
1329 void hammer2_inode_lock(hammer2_inode_t
*ip
, int how
);
1330 void hammer2_inode_unlock(hammer2_inode_t
*ip
);
1331 hammer2_chain_t
*hammer2_inode_chain(hammer2_inode_t
*ip
, int clindex
, int how
);
1332 hammer2_chain_t
*hammer2_inode_chain_and_parent(hammer2_inode_t
*ip
,
1333 int clindex
, hammer2_chain_t
**parentp
, int how
);
1334 hammer2_mtx_state_t
hammer2_inode_lock_temp_release(hammer2_inode_t
*ip
);
1335 void hammer2_inode_lock_temp_restore(hammer2_inode_t
*ip
,
1336 hammer2_mtx_state_t ostate
);
1337 int hammer2_inode_lock_upgrade(hammer2_inode_t
*ip
);
1338 void hammer2_inode_lock_downgrade(hammer2_inode_t
*ip
, int);
1340 void hammer2_dev_exlock(hammer2_dev_t
*hmp
);
1341 void hammer2_dev_shlock(hammer2_dev_t
*hmp
);
1342 void hammer2_dev_unlock(hammer2_dev_t
*hmp
);
1344 int hammer2_get_dtype(uint8_t type
);
1345 int hammer2_get_vtype(uint8_t type
);
1346 uint8_t hammer2_get_obj_type(enum vtype vtype
);
1347 void hammer2_time_to_timespec(uint64_t xtime
, struct timespec
*ts
);
1348 uint64_t hammer2_timespec_to_time(const struct timespec
*ts
);
1349 uint32_t hammer2_to_unix_xid(const uuid_t
*uuid
);
1350 void hammer2_guid_to_uuid(uuid_t
*uuid
, uint32_t guid
);
1351 void hammer2_trans_manage_init(hammer2_pfs_t
*pmp
);
1353 hammer2_key_t
hammer2_dirhash(const unsigned char *name
, size_t len
);
1354 int hammer2_getradix(size_t bytes
);
1356 int hammer2_calc_logical(hammer2_inode_t
*ip
, hammer2_off_t uoff
,
1357 hammer2_key_t
*lbasep
, hammer2_key_t
*leofp
);
1358 int hammer2_calc_physical(hammer2_inode_t
*ip
, hammer2_key_t lbase
);
1359 void hammer2_update_time(uint64_t *timep
);
1360 void hammer2_adjreadcounter(hammer2_blockref_t
*bref
, size_t bytes
);
1365 struct vnode
*hammer2_igetv(hammer2_inode_t
*ip
, int *errorp
);
1366 hammer2_inode_t
*hammer2_inode_lookup(hammer2_pfs_t
*pmp
,
1367 hammer2_tid_t inum
);
1368 hammer2_inode_t
*hammer2_inode_get(hammer2_pfs_t
*pmp
, hammer2_inode_t
*dip
,
1369 hammer2_cluster_t
*cluster
, int idx
);
1370 void hammer2_inode_free(hammer2_inode_t
*ip
);
1371 void hammer2_inode_ref(hammer2_inode_t
*ip
);
1372 void hammer2_inode_drop(hammer2_inode_t
*ip
);
1373 void hammer2_inode_repoint(hammer2_inode_t
*ip
, hammer2_inode_t
*pip
,
1374 hammer2_cluster_t
*cluster
);
1375 void hammer2_inode_repoint_one(hammer2_inode_t
*ip
, hammer2_cluster_t
*cluster
,
1377 void hammer2_inode_modify(hammer2_inode_t
*ip
);
1378 void hammer2_inode_run_sideq(hammer2_pfs_t
*pmp
);
1380 hammer2_inode_t
*hammer2_inode_create(hammer2_inode_t
*dip
,
1381 hammer2_inode_t
*pip
,
1382 struct vattr
*vap
, struct ucred
*cred
,
1383 const uint8_t *name
, size_t name_len
, hammer2_key_t lhc
,
1384 hammer2_key_t inum
, uint8_t type
, uint8_t target_type
,
1385 int flags
, int *errorp
);
1386 void hammer2_inode_chain_sync(hammer2_inode_t
*ip
);
1387 int hammer2_inode_unlink_finisher(hammer2_inode_t
*ip
, int isopen
);
1388 int hammer2_dirent_create(hammer2_inode_t
*dip
, const char *name
,
1389 size_t name_len
, hammer2_key_t inum
, uint8_t type
);
1394 void hammer2_voldata_lock(hammer2_dev_t
*hmp
);
1395 void hammer2_voldata_unlock(hammer2_dev_t
*hmp
);
1396 void hammer2_voldata_modify(hammer2_dev_t
*hmp
);
1397 hammer2_chain_t
*hammer2_chain_alloc(hammer2_dev_t
*hmp
,
1399 hammer2_blockref_t
*bref
);
1400 void hammer2_chain_core_init(hammer2_chain_t
*chain
);
1401 void hammer2_chain_ref(hammer2_chain_t
*chain
);
1402 void hammer2_chain_ref_hold(hammer2_chain_t
*chain
);
1403 void hammer2_chain_drop(hammer2_chain_t
*chain
);
1404 void hammer2_chain_drop_unhold(hammer2_chain_t
*chain
);
1405 void hammer2_chain_lock(hammer2_chain_t
*chain
, int how
);
1406 void hammer2_chain_lock_unhold(hammer2_chain_t
*chain
, int how
);
1408 void hammer2_chain_push_shared_lock(hammer2_chain_t
*chain
);
1409 void hammer2_chain_pull_shared_lock(hammer2_chain_t
*chain
);
1411 void hammer2_chain_load_data(hammer2_chain_t
*chain
);
1412 const hammer2_media_data_t
*hammer2_chain_rdata(hammer2_chain_t
*chain
);
1413 hammer2_media_data_t
*hammer2_chain_wdata(hammer2_chain_t
*chain
);
1414 int hammer2_chain_snapshot(hammer2_chain_t
*chain
, hammer2_ioc_pfs_t
*pmp
,
1415 hammer2_tid_t mtid
);
1417 int hammer2_chain_inode_find(hammer2_pfs_t
*pmp
, hammer2_key_t inum
,
1418 int clindex
, int flags
,
1419 hammer2_chain_t
**parentp
,
1420 hammer2_chain_t
**chainp
);
1421 void hammer2_chain_modify(hammer2_chain_t
*chain
, hammer2_tid_t mtid
,
1422 hammer2_off_t dedup_off
, int flags
);
1423 void hammer2_chain_modify_ip(hammer2_inode_t
*ip
, hammer2_chain_t
*chain
,
1424 hammer2_tid_t mtid
, int flags
);
1425 void hammer2_chain_resize(hammer2_chain_t
*chain
,
1426 hammer2_tid_t mtid
, hammer2_off_t dedup_off
,
1427 int nradix
, int flags
);
1428 void hammer2_chain_unlock(hammer2_chain_t
*chain
);
1429 void hammer2_chain_unlock_hold(hammer2_chain_t
*chain
);
1430 void hammer2_chain_wait(hammer2_chain_t
*chain
);
1431 hammer2_chain_t
*hammer2_chain_get(hammer2_chain_t
*parent
, int generation
,
1432 hammer2_blockref_t
*bref
);
1433 hammer2_chain_t
*hammer2_chain_lookup_init(hammer2_chain_t
*parent
, int flags
);
1434 void hammer2_chain_lookup_done(hammer2_chain_t
*parent
);
1435 hammer2_chain_t
*hammer2_chain_getparent(hammer2_chain_t
**parentp
, int how
);
1436 hammer2_chain_t
*hammer2_chain_lookup(hammer2_chain_t
**parentp
,
1437 hammer2_key_t
*key_nextp
,
1438 hammer2_key_t key_beg
, hammer2_key_t key_end
,
1439 int *cache_indexp
, int flags
);
1440 hammer2_chain_t
*hammer2_chain_next(hammer2_chain_t
**parentp
,
1441 hammer2_chain_t
*chain
,
1442 hammer2_key_t
*key_nextp
,
1443 hammer2_key_t key_beg
, hammer2_key_t key_end
,
1444 int *cache_indexp
, int flags
);
1445 hammer2_blockref_t
*hammer2_chain_scan(hammer2_chain_t
*parent
,
1446 hammer2_chain_t
**chainp
,
1447 hammer2_blockref_t
*bref
,
1448 int *firstp
, int *cache_indexp
, int flags
);
1450 int hammer2_chain_create(hammer2_chain_t
**parentp
, hammer2_chain_t
**chainp
,
1451 hammer2_pfs_t
*pmp
, int methods
,
1452 hammer2_key_t key
, int keybits
,
1453 int type
, size_t bytes
, hammer2_tid_t mtid
,
1454 hammer2_off_t dedup_off
, int flags
);
1455 void hammer2_chain_rename(hammer2_blockref_t
*bref
,
1456 hammer2_chain_t
**parentp
,
1457 hammer2_chain_t
*chain
,
1458 hammer2_tid_t mtid
, int flags
);
1459 void hammer2_chain_delete(hammer2_chain_t
*parent
, hammer2_chain_t
*chain
,
1460 hammer2_tid_t mtid
, int flags
);
1461 void hammer2_chain_setflush(hammer2_chain_t
*chain
);
1462 void hammer2_chain_countbrefs(hammer2_chain_t
*chain
,
1463 hammer2_blockref_t
*base
, int count
);
1464 hammer2_chain_t
*hammer2_chain_bulksnap(hammer2_dev_t
*hmp
);
1465 void hammer2_chain_bulkdrop(hammer2_chain_t
*copy
);
1467 void hammer2_chain_setcheck(hammer2_chain_t
*chain
, void *bdata
);
1468 int hammer2_chain_testcheck(hammer2_chain_t
*chain
, void *bdata
);
1469 int hammer2_chain_dirent_test(hammer2_chain_t
*chain
, const char *name
,
1472 void hammer2_pfs_memory_wait(hammer2_pfs_t
*pmp
);
1473 void hammer2_pfs_memory_inc(hammer2_pfs_t
*pmp
);
1474 void hammer2_pfs_memory_wakeup(hammer2_pfs_t
*pmp
);
1476 void hammer2_base_delete(hammer2_chain_t
*chain
,
1477 hammer2_blockref_t
*base
, int count
,
1478 int *cache_indexp
, hammer2_chain_t
*child
);
1479 void hammer2_base_insert(hammer2_chain_t
*chain
,
1480 hammer2_blockref_t
*base
, int count
,
1481 int *cache_indexp
, hammer2_chain_t
*child
);
1486 void hammer2_flush(hammer2_chain_t
*chain
, int istop
);
1487 void hammer2_delayed_flush(hammer2_chain_t
*chain
);
1492 void hammer2_trans_init(hammer2_pfs_t
*pmp
, uint32_t flags
);
1493 hammer2_tid_t
hammer2_trans_sub(hammer2_pfs_t
*pmp
);
1494 void hammer2_trans_done(hammer2_pfs_t
*pmp
);
1495 hammer2_tid_t
hammer2_trans_newinum(hammer2_pfs_t
*pmp
);
1496 void hammer2_trans_assert_strategy(hammer2_pfs_t
*pmp
);
1497 void hammer2_dedup_record(hammer2_chain_t
*chain
, char *data
);
1502 int hammer2_ioctl(hammer2_inode_t
*ip
, u_long com
, void *data
,
1503 int fflag
, struct ucred
*cred
);
1508 void hammer2_io_putblk(hammer2_io_t
**diop
);
1509 void hammer2_io_cleanup(hammer2_dev_t
*hmp
, struct hammer2_io_tree
*tree
);
1510 char *hammer2_io_data(hammer2_io_t
*dio
, off_t lbase
);
1511 hammer2_io_t
*hammer2_io_getquick(hammer2_dev_t
*hmp
, off_t lbase
, int lsize
);
1512 void hammer2_io_resetinval(hammer2_dev_t
*hmp
, off_t lbase
);
1513 void hammer2_io_getblk(hammer2_dev_t
*hmp
, off_t lbase
, int lsize
,
1514 hammer2_iocb_t
*iocb
);
1515 void hammer2_io_complete(hammer2_iocb_t
*iocb
);
1516 void hammer2_io_callback(struct bio
*bio
);
1517 void hammer2_iocb_wait(hammer2_iocb_t
*iocb
);
1518 int hammer2_io_new(hammer2_dev_t
*hmp
, int btype
, off_t lbase
, int lsize
,
1519 hammer2_io_t
**diop
);
1520 int hammer2_io_newnz(hammer2_dev_t
*hmp
, int btype
, off_t lbase
, int lsize
,
1521 hammer2_io_t
**diop
);
1522 void hammer2_io_newq(hammer2_dev_t
*hmp
, int btype
, off_t lbase
, int lsize
);
1523 int hammer2_io_bread(hammer2_dev_t
*hmp
, int btype
, off_t lbase
, int lsize
,
1524 hammer2_io_t
**diop
);
1525 void hammer2_io_bawrite(hammer2_io_t
**diop
);
1526 void hammer2_io_bdwrite(hammer2_io_t
**diop
);
1527 int hammer2_io_bwrite(hammer2_io_t
**diop
);
1528 int hammer2_io_isdirty(hammer2_io_t
*dio
);
1529 void hammer2_io_setdirty(hammer2_io_t
*dio
);
1530 void hammer2_io_setinval(hammer2_io_t
*dio
, hammer2_off_t off
, u_int bytes
);
1531 void hammer2_io_brelse(hammer2_io_t
**diop
);
1532 void hammer2_io_bqrelse(hammer2_io_t
**diop
);
1533 int hammer2_io_crc_good(hammer2_chain_t
*chain
, uint64_t *maskp
);
1534 void hammer2_io_crc_setmask(hammer2_io_t
*dio
, uint64_t mask
);
1535 void hammer2_io_crc_clrmask(hammer2_io_t
*dio
, uint64_t mask
);
1540 void hammer2_thr_signal(hammer2_thread_t
*thr
, uint32_t flags
);
1541 void hammer2_thr_signal2(hammer2_thread_t
*thr
,
1542 uint32_t pflags
, uint32_t nflags
);
1543 void hammer2_thr_wait(hammer2_thread_t
*thr
, uint32_t flags
);
1544 void hammer2_thr_wait_neg(hammer2_thread_t
*thr
, uint32_t flags
);
1545 int hammer2_thr_wait_any(hammer2_thread_t
*thr
, uint32_t flags
, int timo
);
1546 void hammer2_thr_create(hammer2_thread_t
*thr
,
1547 hammer2_pfs_t
*pmp
, hammer2_dev_t
*hmp
,
1548 const char *id
, int clindex
, int repidx
,
1549 void (*func
)(void *arg
));
1550 void hammer2_thr_delete(hammer2_thread_t
*thr
);
1551 void hammer2_thr_remaster(hammer2_thread_t
*thr
);
1552 void hammer2_thr_freeze_async(hammer2_thread_t
*thr
);
1553 void hammer2_thr_freeze(hammer2_thread_t
*thr
);
1554 void hammer2_thr_unfreeze(hammer2_thread_t
*thr
);
1555 int hammer2_thr_break(hammer2_thread_t
*thr
);
1556 void hammer2_primary_xops_thread(void *arg
);
1559 * hammer2_thread.c (XOP API)
1561 void hammer2_xop_group_init(hammer2_pfs_t
*pmp
, hammer2_xop_group_t
*xgrp
);
1562 void *hammer2_xop_alloc(hammer2_inode_t
*ip
, int flags
);
1563 void hammer2_xop_setname(hammer2_xop_head_t
*xop
,
1564 const char *name
, size_t name_len
);
1565 void hammer2_xop_setname2(hammer2_xop_head_t
*xop
,
1566 const char *name
, size_t name_len
);
1567 size_t hammer2_xop_setname_inum(hammer2_xop_head_t
*xop
, hammer2_key_t inum
);
1568 void hammer2_xop_setip2(hammer2_xop_head_t
*xop
, hammer2_inode_t
*ip2
);
1569 void hammer2_xop_setip3(hammer2_xop_head_t
*xop
, hammer2_inode_t
*ip3
);
1570 void hammer2_xop_reinit(hammer2_xop_head_t
*xop
);
1571 void hammer2_xop_helper_create(hammer2_pfs_t
*pmp
);
1572 void hammer2_xop_helper_cleanup(hammer2_pfs_t
*pmp
);
1573 void hammer2_xop_start(hammer2_xop_head_t
*xop
, hammer2_xop_func_t func
);
1574 void hammer2_xop_start_except(hammer2_xop_head_t
*xop
, hammer2_xop_func_t func
,
1576 int hammer2_xop_collect(hammer2_xop_head_t
*xop
, int flags
);
1577 void hammer2_xop_retire(hammer2_xop_head_t
*xop
, uint32_t mask
);
1578 int hammer2_xop_active(hammer2_xop_head_t
*xop
);
1579 int hammer2_xop_feed(hammer2_xop_head_t
*xop
, hammer2_chain_t
*chain
,
1580 int clindex
, int error
);
1585 void hammer2_primary_sync_thread(void *arg
);
1588 * XOP backends in hammer2_xops.c, primarily for VNOPS. Other XOP backends
1589 * may be integrated into other source files.
1591 void hammer2_xop_ipcluster(hammer2_thread_t
*thr
, hammer2_xop_t
*xop
);
1592 void hammer2_xop_readdir(hammer2_thread_t
*thr
, hammer2_xop_t
*xop
);
1593 void hammer2_xop_nresolve(hammer2_thread_t
*thr
, hammer2_xop_t
*xop
);
1594 void hammer2_xop_unlink(hammer2_thread_t
*thr
, hammer2_xop_t
*xop
);
1595 void hammer2_xop_nrename(hammer2_thread_t
*thr
, hammer2_xop_t
*xop
);
1596 void hammer2_xop_scanlhc(hammer2_thread_t
*thr
, hammer2_xop_t
*xop
);
1597 void hammer2_xop_scanall(hammer2_thread_t
*thr
, hammer2_xop_t
*xop
);
1598 void hammer2_xop_lookup(hammer2_thread_t
*thr
, hammer2_xop_t
*xop
);
1599 void hammer2_inode_xop_mkdirent(hammer2_thread_t
*thr
, hammer2_xop_t
*xop
);
1600 void hammer2_inode_xop_create(hammer2_thread_t
*thr
, hammer2_xop_t
*xop
);
1601 void hammer2_inode_xop_destroy(hammer2_thread_t
*thr
, hammer2_xop_t
*xop
);
1602 void hammer2_inode_xop_chain_sync(hammer2_thread_t
*thr
, hammer2_xop_t
*xop
);
1603 void hammer2_inode_xop_unlinkall(hammer2_thread_t
*thr
, hammer2_xop_t
*xop
);
1604 void hammer2_inode_xop_connect(hammer2_thread_t
*thr
, hammer2_xop_t
*xop
);
1605 void hammer2_inode_xop_flush(hammer2_thread_t
*thr
, hammer2_xop_t
*xop
);
1610 int hammer2_msg_dbg_rcvmsg(kdmsg_msg_t
*msg
);
1611 int hammer2_msg_adhoc_input(kdmsg_msg_t
*msg
);
1616 void hammer2_volconf_update(hammer2_dev_t
*hmp
, int index
);
1617 void hammer2_dump_chain(hammer2_chain_t
*chain
, int tab
, int *countp
, char pfx
);
1618 int hammer2_vfs_sync(struct mount
*mp
, int waitflags
);
1619 hammer2_pfs_t
*hammer2_pfsalloc(hammer2_chain_t
*chain
,
1620 const hammer2_inode_data_t
*ripdata
,
1621 hammer2_tid_t modify_tid
,
1622 hammer2_dev_t
*force_local
);
1623 void hammer2_pfsdealloc(hammer2_pfs_t
*pmp
, int clindex
, int destroying
);
1624 int hammer2_vfs_vget(struct mount
*mp
, struct vnode
*dvp
,
1625 ino_t ino
, struct vnode
**vpp
);
1627 void hammer2_lwinprog_ref(hammer2_pfs_t
*pmp
);
1628 void hammer2_lwinprog_drop(hammer2_pfs_t
*pmp
);
1629 void hammer2_lwinprog_wait(hammer2_pfs_t
*pmp
, int pipe
);
1634 int hammer2_freemap_alloc(hammer2_chain_t
*chain
, size_t bytes
);
1635 void hammer2_freemap_adjust(hammer2_dev_t
*hmp
,
1636 hammer2_blockref_t
*bref
, int how
);
1641 uint8_t hammer2_cluster_type(hammer2_cluster_t
*cluster
);
1642 const hammer2_media_data_t
*hammer2_cluster_rdata(hammer2_cluster_t
*cluster
);
1643 hammer2_media_data_t
*hammer2_cluster_wdata(hammer2_cluster_t
*cluster
);
1644 hammer2_cluster_t
*hammer2_cluster_from_chain(hammer2_chain_t
*chain
);
1645 void hammer2_cluster_bref(hammer2_cluster_t
*cluster
, hammer2_blockref_t
*bref
);
1646 hammer2_cluster_t
*hammer2_cluster_alloc(hammer2_pfs_t
*pmp
,
1647 hammer2_blockref_t
*bref
);
1648 void hammer2_cluster_ref(hammer2_cluster_t
*cluster
);
1649 void hammer2_cluster_drop(hammer2_cluster_t
*cluster
);
1650 void hammer2_cluster_lock(hammer2_cluster_t
*cluster
, int how
);
1651 int hammer2_cluster_check(hammer2_cluster_t
*cluster
, hammer2_key_t lokey
,
1653 void hammer2_cluster_resolve(hammer2_cluster_t
*cluster
);
1654 void hammer2_cluster_forcegood(hammer2_cluster_t
*cluster
);
1655 void hammer2_cluster_unlock(hammer2_cluster_t
*cluster
);
1657 void hammer2_bulkfree_init(hammer2_dev_t
*hmp
);
1658 void hammer2_bulkfree_uninit(hammer2_dev_t
*hmp
);
1659 int hammer2_bulkfree_pass(hammer2_dev_t
*hmp
, hammer2_chain_t
*vchain
,
1660 struct hammer2_ioc_bulkfree
*bfi
);
1665 void hammer2_iocom_init(hammer2_dev_t
*hmp
);
1666 void hammer2_iocom_uninit(hammer2_dev_t
*hmp
);
1667 void hammer2_cluster_reconnect(hammer2_dev_t
*hmp
, struct file
*fp
);
1670 * hammer2_strategy.c
1672 int hammer2_vop_strategy(struct vop_strategy_args
*ap
);
1673 int hammer2_vop_bmap(struct vop_bmap_args
*ap
);
1674 void hammer2_write_thread(void *arg
);
1675 void hammer2_bioq_sync(hammer2_pfs_t
*pmp
);
1676 void hammer2_dedup_clear(hammer2_dev_t
*hmp
);
1678 #endif /* !_KERNEL */
1679 #endif /* !_VFS_HAMMER2_HAMMER2_H_ */