2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2022 Tomohiro Kusumi <tkusumi@netbsd.org>
5 * Copyright (c) 2011-2022 The DragonFly Project. All rights reserved.
7 * This code is derived from software contributed to The DragonFly Project
8 * by Matthew Dillon <dillon@dragonflybsd.org>
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
20 * 3. Neither the name of The DragonFly Project nor the names of its
21 * contributors may be used to endorse or promote products derived
22 * from this software without specific, prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
27 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
28 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
30 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
31 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
32 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
33 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
34 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * HAMMER2 IN-MEMORY CACHE OF MEDIA STRUCTURES
41 * This header file contains structures used internally by the HAMMER2
42 * implementation. See hammer2_disk.h for on-disk structures.
44 * There is an in-memory representation of all on-media data structure.
45 * Almost everything is represented by a hammer2_chain structure in-memory.
46 * Other higher-level structures typically map to chains.
48 * A great deal of data is accessed simply via its buffer cache buffer,
49 * which is mapped for the duration of the chain's lock. Hammer2 must
50 * implement its own buffer cache layer on top of the system layer to
51 * allow for different threads to lock different sub-block-sized buffers.
53 * When modifications are made to a chain a new filesystem block must be
54 * allocated. Multiple modifications do not typically allocate new blocks
55 * until the current block has been flushed. Flushes do not block the
56 * front-end unless the front-end operation crosses the current inode being
59 * The in-memory representation may remain cached (for example in order to
60 * placemark clustering locks) even after the related data has been
64 #ifndef _VFS_HAMMER2_HAMMER2_H_
65 #define _VFS_HAMMER2_HAMMER2_H_
68 #error "_KERNEL shouldn't be defined"
70 #ifdef _KERNEL_STRUCTURES
71 #error "_KERNEL_STRUCTURES shouldn't be defined"
75 #include <sys/param.h>
77 #include <sys/types.h>
79 #include <sys/kernel.h>
81 //#include <sys/conf.h>
83 #include <sys/systm.h>
85 //#include <sys/diskslice.h>
87 //#include <sys/malloc.h>
88 #include <sys/mount.h>
90 #include <sys/vnode.h>
94 #include <sys/thread.h>
95 #include <sys/lockf.h>
98 #include <sys/queue.h>
100 #include <sys/limits.h>
101 #include <sys/dmsg.h>
102 #include <sys/mutex.h>
103 #include <sys/lock.h>
104 #include <sys/file.h>
105 #include <sys/objcache.h>
109 #include <sys/signal2.h>
110 #include <sys/buf2.h>
111 #include <sys/mutex2.h>
112 #include <sys/spinlock2.h>
116 #include "hammer2_xxhash.h"
117 #include "hammer2_disk.h"
118 #include "hammer2_mount.h"
119 #include "hammer2_ioctl.h"
122 #include <sys/time.h>
123 #include <sys/vfscache.h>
124 #include <sys/errno.h>
126 #include <machine/atomic.h>
136 #include <vfs/hammer2/hammer2_disk.h>
137 #include <vfs/hammer2/hammer2_ioctl.h>
138 #include <vfs/hammer2/hammer2_mount.h>
139 #include <vfs/hammer2/hammer2_xxhash.h>
140 #include <mkfs_hammer2.h>
142 #include "hammer2_compat.h"
145 struct hammer2_chain
;
146 struct hammer2_inode
;
147 struct hammer2_depend
;
153 * Mutex and lock shims. Hammer2 requires support for asynchronous and
154 * abortable locks, and both exclusive and shared spinlocks. Normal
155 * synchronous non-abortable locks can be substituted for spinlocks.
158 typedef mtx_t hammer2_mtx_t;
159 typedef mtx_state_t hammer2_mtx_state_t;
161 typedef struct spinlock hammer2_spin_t;
163 #define hammer2_mtx_ex mtx_lock_ex_quick
164 #define hammer2_mtx_ex_try mtx_lock_ex_try
165 #define hammer2_mtx_sh mtx_lock_sh_quick
166 #define hammer2_mtx_sh_again mtx_lock_sh_again
167 #define hammer2_mtx_sh_try mtx_lock_sh_try
168 #define hammer2_mtx_unlock mtx_unlock
169 #define hammer2_mtx_upgrade_try mtx_upgrade_try
170 #define hammer2_mtx_downgrade mtx_downgrade
171 #define hammer2_mtx_owned mtx_owned
172 #define hammer2_mtx_init mtx_init
173 #define hammer2_mtx_temp_release mtx_lock_temp_release
174 #define hammer2_mtx_temp_restore mtx_lock_temp_restore
175 #define hammer2_mtx_refs mtx_lockrefs
177 #define hammer2_spin_init spin_init
178 #define hammer2_spin_sh spin_lock_shared
179 #define hammer2_spin_ex spin_lock
180 #define hammer2_spin_unsh spin_unlock_shared
181 #define hammer2_spin_unex spin_unlock
182 #define hammer2_spin_lock_update spin_lock_update
183 #define hammer2_spin_unlock_update spin_unlock_update
186 TAILQ_HEAD(hammer2_xop_list
, hammer2_xop_head
);
187 TAILQ_HEAD(hammer2_chain_list
, hammer2_chain
);
189 typedef struct hammer2_xop_list hammer2_xop_list_t
;
192 * Cap the dynamic calculation for the maximum number of dirty
193 * chains and dirty inodes allowed.
195 #define HAMMER2_LIMIT_DIRTY_CHAINS (1024*1024)
196 #define HAMMER2_LIMIT_DIRTY_INODES (65536)
199 * The chain structure tracks a portion of the media topology from the
200 * root (volume) down. Chains represent volumes, inodes, indirect blocks,
201 * data blocks, and freemap nodes and leafs.
203 * The chain structure utilizes a simple singly-homed topology and the
204 * chain's in-memory topology will move around as the chains do, due mainly
205 * to renames and indirect block creation.
207 * Block Table Updates
209 * Block table updates for insertions and updates are delayed until the
210 * flush. This allows us to avoid having to modify the parent chain
211 * all the way to the root.
213 * Block table deletions are performed immediately (modifying the parent
214 * in the process) because the flush code uses the chain structure to
215 * track delayed updates and the chain will be (likely) gone or moved to
216 * another location in the topology after a deletion.
218 * A prior iteration of the code tried to keep the relationship intact
219 * on deletes by doing a delete-duplicate operation on the chain, but
220 * it added way too much complexity to the codebase.
222 * Flush Synchronization
224 * The flush code must flush modified chains bottom-up. Because chain
225 * structures can shift around and are NOT topologically stable,
226 * modified chains are independently indexed for the flush. As the flush
227 * runs it modifies (or further modifies) and updates the parents,
228 * propagating the flush all the way to the volume root.
230 * Modifying front-end operations can occur during a flush but will block
231 * in two cases: (1) when the front-end tries to operate on the inode
232 * currently in the midst of being flushed and (2) if the front-end
233 * crosses an inode currently being flushed (such as during a rename).
234 * So, for example, if you rename directory "x" to "a/b/c/d/e/f/g/x" and
235 * the flusher is currently working on "a/b/c", the rename will block
236 * temporarily in order to ensure that "x" exists in one place or the
239 * Meta-data statistics are updated by the flusher. The front-end will
240 * make estimates but meta-data must be fully synchronized only during a
241 * flush in order to ensure that it remains correct across a crash.
243 * Multiple flush synchronizations can theoretically be in-flight at the
244 * same time but the implementation is not coded to handle the case and
245 * currently serializes them.
249 * Snapshots currently require the subdirectory tree being snapshotted
250 * to be flushed. The snapshot then creates a new super-root inode which
251 * copies the flushed blockdata of the directory or file that was
256 * - Note that the radix tree runs in powers of 2 only so sub-trees
257 * cannot straddle edges.
259 RB_HEAD(hammer2_chain_tree
, hammer2_chain
);
261 struct hammer2_reptrack
{
263 struct hammer2_reptrack
*next
;
264 struct hammer2_chain
*chain
;
268 * Core topology for chain (embedded in chain). Protected by a spinlock.
270 struct hammer2_chain_core
{
272 struct hammer2_reptrack
*reptrack
;
273 struct hammer2_chain_tree rbtree
; /* sub-chains */
274 int live_zero
; /* blockref array opt */
275 u_int live_count
; /* live (not deleted) chains in tree */
276 u_int chain_count
; /* live + deleted chains under core */
277 int generation
; /* generation number (inserts only) */
280 typedef struct hammer2_chain_core hammer2_chain_core_t
;
282 RB_HEAD(hammer2_io_tree
, hammer2_io
);
285 * DIO - Management structure wrapping system buffer cache.
287 * HAMMER2 uses an I/O abstraction that allows it to cache and manipulate
288 * fixed-sized filesystem buffers frontend by variable-sized hammer2_chain
291 /* #define HAMMER2_IO_DEBUG */
293 #ifdef HAMMER2_IO_DEBUG
294 #define HAMMER2_IO_DEBUG_ARGS , const char *file, int line
295 #define HAMMER2_IO_DEBUG_CALL , file, line
296 #define HAMMER2_IO_DEBUG_COUNT 2048
297 #define HAMMER2_IO_DEBUG_MASK (HAMMER2_IO_DEBUG_COUNT - 1)
299 #define HAMMER2_IO_DEBUG_ARGS
300 #define HAMMER2_IO_DEBUG_CALL
304 RB_ENTRY(hammer2_io
) rbnode
; /* indexed by device offset */
305 struct hammer2_dev
*hmp
;
306 struct m_vnode
*devvp
;
308 off_t dbase
; /* offset of devvp within volumes */
312 int act
; /* activity */
313 int btype
; /* approximate BREF_TYPE_* */
316 #ifdef HAMMER2_IO_DEBUG
321 uint64_t dedup_valid
; /* valid for dedup operation */
322 uint64_t dedup_alloc
; /* allocated / de-dupable */
323 #ifdef HAMMER2_IO_DEBUG
324 const char *debug_file
[HAMMER2_IO_DEBUG_COUNT
];
325 void *debug_td
[HAMMER2_IO_DEBUG_COUNT
];
326 int debug_line
[HAMMER2_IO_DEBUG_COUNT
];
327 uint64_t debug_refs
[HAMMER2_IO_DEBUG_COUNT
];
331 typedef struct hammer2_io hammer2_io_t
;
333 #define HAMMER2_DIO_INPROG 0x8000000000000000LLU /* bio in progress */
334 #define HAMMER2_DIO_GOOD 0x4000000000000000LLU /* dio->bp is stable */
335 #define HAMMER2_DIO_WAITING 0x2000000000000000LLU /* wait on INPROG */
336 #define HAMMER2_DIO_DIRTY 0x1000000000000000LLU /* flush last drop */
337 #define HAMMER2_DIO_FLUSH 0x0800000000000000LLU /* immediate flush */
339 #define HAMMER2_DIO_MASK 0x00FFFFFFFFFFFFFFLLU
342 * Primary chain structure keeps track of the topology in-memory.
344 struct hammer2_chain
{
346 hammer2_chain_core_t core
;
347 RB_ENTRY(hammer2_chain
) rbnode
; /* live chain(s) */
348 hammer2_blockref_t bref
;
349 struct hammer2_chain
*parent
;
350 struct hammer2_dev
*hmp
;
351 struct hammer2_pfs
*pmp
; /* A PFS or super-root (spmp) */
353 struct lock diolk
; /* xop focus interlock */
354 hammer2_io_t
*dio
; /* physical data buffer */
355 hammer2_media_data_t
*data
; /* data pointer shortcut */
356 u_int bytes
; /* physical data size */
360 int error
; /* on-lock data error state */
361 int cache_index
; /* heur speeds up lookup */
363 TAILQ_ENTRY(hammer2_chain
) lru_node
; /* 0-refs LRU */
366 typedef struct hammer2_chain hammer2_chain_t
;
368 int hammer2_chain_cmp(hammer2_chain_t
*chain1
, hammer2_chain_t
*chain2
);
369 RB_PROTOTYPE(hammer2_chain_tree
, hammer2_chain
, rbnode
, hammer2_chain_cmp
);
372 * Passed to hammer2_chain_create(), causes methods to be inherited from
375 #define HAMMER2_METH_DEFAULT -1
378 * Special notes on flags:
380 * INITIAL - This flag allows a chain to be created and for storage to
381 * be allocated without having to immediately instantiate the
382 * related buffer. The data is assumed to be all-zeros. It
383 * is primarily used for indirect blocks.
385 * MODIFIED - The chain's media data has been modified. Prevents chain
386 * free on lastdrop if still in the topology.
388 * UPDATE - Chain might not be modified but parent blocktable needs
389 * an update. Prevents chain free on lastdrop if still in
392 * BLKMAPPED - Indicates that the chain is present in the parent blockmap.
394 * BLKMAPUPD - Indicates that the chain is present but needs to be updated
395 * in the parent blockmap.
397 #define HAMMER2_CHAIN_MODIFIED 0x00000001 /* dirty chain data */
398 #define HAMMER2_CHAIN_ALLOCATED 0x00000002 /* kmalloc'd chain */
399 #define HAMMER2_CHAIN_DESTROY 0x00000004
400 #define HAMMER2_CHAIN_DEDUPABLE 0x00000008 /* registered w/dedup */
401 #define HAMMER2_CHAIN_DELETED 0x00000010 /* deleted chain */
402 #define HAMMER2_CHAIN_INITIAL 0x00000020 /* initial create */
403 #define HAMMER2_CHAIN_UPDATE 0x00000040 /* need parent update */
404 #define HAMMER2_CHAIN_NOTTESTED 0x00000080 /* crc not generated */
405 #define HAMMER2_CHAIN_TESTEDGOOD 0x00000100 /* crc tested good */
406 #define HAMMER2_CHAIN_ONFLUSH 0x00000200 /* on a flush list */
407 #define HAMMER2_CHAIN_UNUSED0400 0x00000400
408 #define HAMMER2_CHAIN_VOLUMESYNC 0x00000800 /* needs volume sync */
409 #define HAMMER2_CHAIN_UNUSED1000 0x00001000
410 #define HAMMER2_CHAIN_COUNTEDBREFS 0x00002000 /* block table stats */
411 #define HAMMER2_CHAIN_ONRBTREE 0x00004000 /* on parent RB tree */
412 #define HAMMER2_CHAIN_ONLRU 0x00008000 /* on LRU list */
413 #define HAMMER2_CHAIN_UNUSED10000 0x00010000
414 #define HAMMER2_CHAIN_RELEASE 0x00020000 /* don't keep around */
415 #define HAMMER2_CHAIN_BLKMAPPED 0x00040000 /* present in blkmap */
416 #define HAMMER2_CHAIN_BLKMAPUPD 0x00080000 /* +needs updating */
417 #define HAMMER2_CHAIN_IOINPROG 0x00100000 /* I/O interlock */
418 #define HAMMER2_CHAIN_IOSIGNAL 0x00200000 /* I/O interlock */
419 #define HAMMER2_CHAIN_PFSBOUNDARY 0x00400000 /* super->pfs inode */
420 #define HAMMER2_CHAIN_HINT_LEAF_COUNT 0x00800000 /* redo leaf count */
421 #define HAMMER2_CHAIN_LRUHINT 0x01000000 /* was reused */
423 #define HAMMER2_CHAIN_FLUSH_MASK (HAMMER2_CHAIN_MODIFIED | \
424 HAMMER2_CHAIN_UPDATE | \
425 HAMMER2_CHAIN_ONFLUSH | \
426 HAMMER2_CHAIN_DESTROY)
429 * Hammer2 error codes, used by chain->error and cluster->error. The error
430 * code is typically set on-lock unless no I/O was requested, and set on
431 * I/O otherwise. If set for a cluster it generally means that the cluster
432 * code could not find a valid copy to present.
434 * All H2 error codes are flags and can be accumulated by ORing them
437 * IO - An I/O error occurred
438 * CHECK - I/O succeeded but did not match the check code
439 * INCOMPLETE - A cluster is not complete enough to use, or
440 * a chain cannot be loaded because its parent has an error.
442 * NOTE: API allows callers to check zero/non-zero to determine if an error
445 * NOTE: Chain's data field is usually NULL on an IO error but not necessarily
446 * NULL on other errors. Check chain->error, not chain->data.
448 #define HAMMER2_ERROR_NONE 0 /* no error (must be 0) */
449 #define HAMMER2_ERROR_EIO 0x00000001 /* device I/O error */
450 #define HAMMER2_ERROR_CHECK 0x00000002 /* check code error */
451 #define HAMMER2_ERROR_INCOMPLETE 0x00000004 /* incomplete cluster */
452 #define HAMMER2_ERROR_DEPTH 0x00000008 /* tmp depth limit */
453 #define HAMMER2_ERROR_BADBREF 0x00000010 /* illegal bref */
454 #define HAMMER2_ERROR_ENOSPC 0x00000020 /* allocation failure */
455 #define HAMMER2_ERROR_ENOENT 0x00000040 /* entry not found */
456 #define HAMMER2_ERROR_ENOTEMPTY 0x00000080 /* dir not empty */
457 #define HAMMER2_ERROR_EAGAIN 0x00000100 /* retry */
458 #define HAMMER2_ERROR_ENOTDIR 0x00000200 /* not directory */
459 #define HAMMER2_ERROR_EISDIR 0x00000400 /* is directory */
460 #define HAMMER2_ERROR_EINPROGRESS 0x00000800 /* already running */
461 #define HAMMER2_ERROR_ABORTED 0x00001000 /* aborted operation */
462 #define HAMMER2_ERROR_EOF 0x00002000 /* end of scan */
463 #define HAMMER2_ERROR_EINVAL 0x00004000 /* catch-all */
464 #define HAMMER2_ERROR_EEXIST 0x00008000 /* entry exists */
465 #define HAMMER2_ERROR_EDEADLK 0x00010000
466 #define HAMMER2_ERROR_ESRCH 0x00020000
467 #define HAMMER2_ERROR_ETIMEDOUT 0x00040000
470 * Flags passed to hammer2_chain_lookup() and hammer2_chain_next()
473 * NODATA - Asks that the chain->data not be resolved in order
476 * NODIRECT - Prevents a lookup of offset 0 in an inode from returning
477 * the inode itself if the inode is in DIRECTDATA mode
478 * (i.e. file is <= 512 bytes). Used by the synchronization
479 * code to prevent confusion.
481 * SHARED - The input chain is expected to be locked shared,
482 * and the output chain is locked shared.
484 * MATCHIND - Allows an indirect block / freemap node to be returned
485 * when the passed key range matches the radix. Remember
486 * that key_end is inclusive (e.g. {0x000,0xFFF},
487 * not {0x000,0x1000}).
489 * (Cannot be used for remote or cluster ops).
491 * ALWAYS - Always resolve the data. If ALWAYS and NODATA are both
492 * missing, bulk file data is not resolved but inodes and
493 * other meta-data will.
495 #define HAMMER2_LOOKUP_UNUSED0001 0x00000001
496 #define HAMMER2_LOOKUP_NODATA 0x00000002 /* data left NULL */
497 #define HAMMER2_LOOKUP_NODIRECT 0x00000004 /* no offset=0 DD */
498 #define HAMMER2_LOOKUP_SHARED 0x00000100
499 #define HAMMER2_LOOKUP_MATCHIND 0x00000200 /* return all chains */
500 #define HAMMER2_LOOKUP_UNUSED0400 0x00000400
501 #define HAMMER2_LOOKUP_ALWAYS 0x00000800 /* resolve data */
502 #define HAMMER2_LOOKUP_UNUSED1000 0x00001000
505 * Flags passed to hammer2_chain_modify() and hammer2_chain_resize()
507 * NOTE: OPTDATA allows us to avoid instantiating buffers for INDIRECT
508 * blocks in the INITIAL-create state.
510 #define HAMMER2_MODIFY_OPTDATA 0x00000002 /* data can be NULL */
513 * Flags passed to hammer2_chain_lock()
515 * NOTE: NONBLOCK is only used for hammer2_chain_repparent() and getparent(),
516 * other functions (e.g. hammer2_chain_lookup(), etc) can't handle its
519 #define HAMMER2_RESOLVE_NEVER 1
520 #define HAMMER2_RESOLVE_MAYBE 2
521 #define HAMMER2_RESOLVE_ALWAYS 3
522 #define HAMMER2_RESOLVE_MASK 0x0F
524 #define HAMMER2_RESOLVE_SHARED 0x10 /* request shared lock */
525 #define HAMMER2_RESOLVE_LOCKAGAIN 0x20 /* another shared lock */
526 #define HAMMER2_RESOLVE_UNUSED40 0x40
527 #define HAMMER2_RESOLVE_NONBLOCK 0x80 /* non-blocking */
530 * Flags passed to hammer2_chain_delete()
532 #define HAMMER2_DELETE_PERMANENT 0x0001
535 * Flags passed to hammer2_chain_insert() or hammer2_chain_rename()
536 * or hammer2_chain_create().
538 #define HAMMER2_INSERT_PFSROOT 0x0004
539 #define HAMMER2_INSERT_SAMEPARENT 0x0008
542 * hammer2_freemap_adjust()
544 #define HAMMER2_FREEMAP_DORECOVER 1
546 #define HAMMER2_FREEMAP_DOMAYFREE 2
547 #define HAMMER2_FREEMAP_DOREALFREE 3
551 * HAMMER2 cluster - A set of chains representing the same entity.
553 * hammer2_cluster typically represents a temporary set of representitive
554 * chains. The one exception is that a hammer2_cluster is embedded in
555 * hammer2_inode. This embedded cluster is ONLY used to track the
556 * representitive chains and cannot be directly locked.
558 * A cluster is usually temporary (and thus per-thread) for locking purposes,
559 * allowing us to embed the asynchronous storage required for cluster
560 * operations in the cluster itself and adjust the state and status without
561 * having to worry too much about SMP issues.
563 * The exception is the cluster embedded in the hammer2_inode structure.
564 * This is used to cache the cluster state on an inode-by-inode basis.
565 * Individual hammer2_chain structures not incorporated into clusters might
566 * also stick around to cache miscellanious elements.
568 * Because the cluster is a 'working copy' and is usually subject to cluster
569 * quorum rules, it is quite possible for us to end up with an insufficient
570 * number of live chains to execute an operation. If an insufficient number
571 * of chains remain in a working copy, the operation may have to be
572 * downgraded, retried, stall until the requisit number of chains are
573 * available, or possibly even error out depending on the mount type.
575 * A cluster's focus is set when it is locked. The focus can only be set
576 * to a chain still part of the synchronized set.
578 #define HAMMER2_XOPFIFO 16
579 #define HAMMER2_XOPFIFO_MASK (HAMMER2_XOPFIFO - 1)
580 #define HAMMER2_XOPTHREADS_MIN 32
581 #define HAMMER2_XOPGROUPS_MIN 4
583 #define HAMMER2_MAXCLUSTER 8
584 #define HAMMER2_XOPMASK_CLUSTER ((uint64_t)((1LLU << HAMMER2_MAXCLUSTER) - 1))
585 #define HAMMER2_XOPMASK_VOP ((uint64_t)0x0000000080000000LLU)
586 #define HAMMER2_XOPMASK_FIFOW ((uint64_t)0x0000000040000000LLU)
587 #define HAMMER2_XOPMASK_WAIT ((uint64_t)0x0000000020000000LLU)
588 #define HAMMER2_XOPMASK_FEED ((uint64_t)0x0000000100000000LLU)
590 #define HAMMER2_XOPMASK_ALLDONE (HAMMER2_XOPMASK_VOP | HAMMER2_XOPMASK_CLUSTER)
592 struct hammer2_cluster_item
{
593 hammer2_chain_t
*chain
;
598 typedef struct hammer2_cluster_item hammer2_cluster_item_t
;
601 * INVALID - Invalid for focus, i.e. not part of synchronized set.
602 * Once set, this bit is sticky across operations.
604 * FEMOD - Indicates that front-end modifying operations can
605 * mess with this entry and MODSYNC will copy also
608 #define HAMMER2_CITEM_INVALID 0x00000001
609 #define HAMMER2_CITEM_FEMOD 0x00000002
610 #define HAMMER2_CITEM_NULL 0x00000004
612 struct hammer2_cluster
{
613 int refs
; /* track for deallocation */
615 struct hammer2_pfs
*pmp
;
618 int error
; /* error code valid on lock */
620 hammer2_chain_t
*focus
; /* current focus (or mod) */
621 hammer2_cluster_item_t array
[HAMMER2_MAXCLUSTER
];
624 typedef struct hammer2_cluster hammer2_cluster_t
;
627 * WRHARD - Hard mounts can write fully synchronized
628 * RDHARD - Hard mounts can read fully synchronized
629 * UNHARD - Unsynchronized masters present
630 * NOHARD - No masters visible
631 * WRSOFT - Soft mounts can write to at least the SOFT_MASTER
632 * RDSOFT - Soft mounts can read from at least a SOFT_SLAVE
633 * UNSOFT - Unsynchronized slaves present
634 * NOSOFT - No slaves visible
635 * RDSLAVE - slaves are accessible (possibly unsynchronized or remote).
636 * MSYNCED - All masters are fully synchronized
637 * SSYNCED - All known local slaves are fully synchronized to masters
639 * All available masters are always incorporated. All PFSs belonging to a
640 * cluster (master, slave, copy, whatever) always try to synchronize the
641 * total number of known masters in the PFSs root inode.
643 * A cluster might have access to many slaves, copies, or caches, but we
644 * have a limited number of cluster slots. Any such elements which are
645 * directly mounted from block device(s) will always be incorporated. Note
646 * that SSYNCED only applies to such elements which are directly mounted,
647 * not to any remote slaves, copies, or caches that could be available. These
648 * bits are used to monitor and drive our synchronization threads.
650 * When asking the question 'is any data accessible at all', then a simple
651 * test against (RDHARD|RDSOFT|RDSLAVE) gives you the answer. If any of
652 * these bits are set the object can be read with certain caveats:
653 * RDHARD - no caveats. RDSOFT - authoritative but might not be synchronized.
654 * and RDSLAVE - not authoritative, has some data but it could be old or
657 * When both soft and hard mounts are available, data will be read and written
658 * via the soft mount only. But all might be in the cluster because
659 * background synchronization threads still need to do their work.
661 #define HAMMER2_CLUSTER_INODE 0x00000001 /* embedded in inode struct */
662 #define HAMMER2_CLUSTER_UNUSED2 0x00000002
663 #define HAMMER2_CLUSTER_LOCKED 0x00000004 /* cluster lks not recursive */
664 #define HAMMER2_CLUSTER_WRHARD 0x00000100 /* hard-mount can write */
665 #define HAMMER2_CLUSTER_RDHARD 0x00000200 /* hard-mount can read */
666 #define HAMMER2_CLUSTER_UNHARD 0x00000400 /* unsynchronized masters */
667 #define HAMMER2_CLUSTER_NOHARD 0x00000800 /* no masters visible */
668 #define HAMMER2_CLUSTER_WRSOFT 0x00001000 /* soft-mount can write */
669 #define HAMMER2_CLUSTER_RDSOFT 0x00002000 /* soft-mount can read */
670 #define HAMMER2_CLUSTER_UNSOFT 0x00004000 /* unsynchronized slaves */
671 #define HAMMER2_CLUSTER_NOSOFT 0x00008000 /* no slaves visible */
672 #define HAMMER2_CLUSTER_MSYNCED 0x00010000 /* all masters synchronized */
673 #define HAMMER2_CLUSTER_SSYNCED 0x00020000 /* known slaves synchronized */
675 #define HAMMER2_CLUSTER_ANYDATA ( HAMMER2_CLUSTER_RDHARD | \
676 HAMMER2_CLUSTER_RDSOFT | \
677 HAMMER2_CLUSTER_RDSLAVE)
679 #define HAMMER2_CLUSTER_RDOK ( HAMMER2_CLUSTER_RDHARD | \
680 HAMMER2_CLUSTER_RDSOFT)
682 #define HAMMER2_CLUSTER_WROK ( HAMMER2_CLUSTER_WRHARD | \
683 HAMMER2_CLUSTER_WRSOFT)
685 #define HAMMER2_CLUSTER_ZFLAGS ( HAMMER2_CLUSTER_WRHARD | \
686 HAMMER2_CLUSTER_RDHARD | \
687 HAMMER2_CLUSTER_WRSOFT | \
688 HAMMER2_CLUSTER_RDSOFT | \
689 HAMMER2_CLUSTER_MSYNCED | \
690 HAMMER2_CLUSTER_SSYNCED)
692 RB_HEAD(hammer2_inode_tree
, hammer2_inode
); /* ip->rbnode */
693 TAILQ_HEAD(inoq_head
, hammer2_inode
); /* ip->entry */
694 TAILQ_HEAD(depq_head
, hammer2_depend
); /* depend->entry */
696 struct hammer2_depend
{
697 TAILQ_ENTRY(hammer2_depend
) entry
;
698 struct inoq_head sideq
;
704 typedef struct hammer2_depend hammer2_depend_t
;
709 * NOTE: The inode-embedded cluster is never used directly for I/O (since
710 * it may be shared). Instead it will be replicated-in and synchronized
711 * back out if changed.
713 struct hammer2_inode
{
714 RB_ENTRY(hammer2_inode
) rbnode
; /* inumber lookup (HL) */
715 TAILQ_ENTRY(hammer2_inode
) entry
; /* SYNCQ/SIDEQ */
716 hammer2_depend_t
*depend
; /* non-NULL if SIDEQ */
717 hammer2_depend_t depend_static
; /* (in-place allocation) */
718 hammer2_mtx_t lock
; /* inode lock */
719 hammer2_mtx_t truncate_lock
; /* prevent truncates */
720 struct hammer2_pfs
*pmp
; /* PFS mount */
722 hammer2_spin_t cluster_spin
; /* update cluster */
723 hammer2_cluster_t cluster
;
724 //struct lockf advlock;
726 u_int refs
; /* +vpref, +flushref */
727 int ihash
; /* xop worker distribution */
728 uint8_t comp_heuristic
;
729 hammer2_inode_meta_t meta
; /* copy of meta-data */
733 typedef struct hammer2_inode hammer2_inode_t
;
736 * MODIFIED - Inode is in a modified state, ip->meta may have changes.
737 * RESIZED - Inode truncated (any) or inode extended beyond
740 * SYNCQ - Inode is included in the current filesystem sync. The
741 * DELETING and CREATING flags will be acted upon.
743 * SIDEQ - Inode has likely been disconnected from the vnode topology
744 * and so is not visible to the vnode-based filesystem syncer
745 * code, but is dirty and must be included in the next
746 * filesystem sync. These inodes are moved to the SYNCQ at
747 * the time the sync occurs.
749 * Inodes are not placed on this queue simply because they have
750 * become dirty, if a vnode is attached.
752 * DELETING - Inode is flagged for deletion during the next filesystem
753 * sync. That is, the inode's chain is currently connected
754 * and must be deleting during the current or next fs sync.
756 * CREATING - Inode is flagged for creation during the next filesystem
757 * sync. That is, the inode's chain topology exists (so
758 * kernel buffer flushes can occur), but is currently
759 * disconnected and must be inserted during the current or
760 * next fs sync. If the DELETING flag is also set, the
761 * topology can be thrown away instead.
763 * If an inode that is already part of the current filesystem sync is
764 * modified by the frontend, including by buffer flushes, the inode lock
765 * code detects the SYNCQ flag and moves the inode to the head of the
766 * flush-in-progress, then blocks until the flush has gotten past it.
768 #define HAMMER2_INODE_MODIFIED 0x0001
769 #define HAMMER2_INODE_UNUSED0002 0x0002
770 #define HAMMER2_INODE_UNUSED0004 0x0004
771 #define HAMMER2_INODE_ONRBTREE 0x0008
772 #define HAMMER2_INODE_RESIZED 0x0010 /* requires inode_chain_sync */
773 #define HAMMER2_INODE_UNUSED0020 0x0020
774 #define HAMMER2_INODE_ISUNLINKED 0x0040
775 #define HAMMER2_INODE_UNUSED0080 0x0080
776 #define HAMMER2_INODE_SIDEQ 0x0100 /* on side processing queue */
777 #define HAMMER2_INODE_NOSIDEQ 0x0200 /* disable sideq operation */
778 #define HAMMER2_INODE_DIRTYDATA 0x0400 /* interlocks inode flush */
779 #define HAMMER2_INODE_SYNCQ 0x0800 /* sync interlock, sequenced */
780 #define HAMMER2_INODE_DELETING 0x1000 /* sync interlock, chain topo */
781 #define HAMMER2_INODE_CREATING 0x2000 /* sync interlock, chain topo */
782 #define HAMMER2_INODE_SYNCQ_WAKEUP 0x4000 /* sync interlock wakeup */
783 #define HAMMER2_INODE_SYNCQ_PASS2 0x8000 /* force retry delay */
785 #define HAMMER2_INODE_DIRTY (HAMMER2_INODE_MODIFIED | \
786 HAMMER2_INODE_DIRTYDATA | \
787 HAMMER2_INODE_DELETING | \
788 HAMMER2_INODE_CREATING)
790 int hammer2_inode_cmp(hammer2_inode_t
*ip1
, hammer2_inode_t
*ip2
);
791 RB_PROTOTYPE2(hammer2_inode_tree
, hammer2_inode
, rbnode
, hammer2_inode_cmp
,
795 * Transaction management sub-structure under hammer2_pfs
797 struct hammer2_trans
{
802 typedef struct hammer2_trans hammer2_trans_t
;
804 #define HAMMER2_TRANS_ISFLUSH 0x80000000 /* flush code */
805 #define HAMMER2_TRANS_BUFCACHE 0x40000000 /* bio strategy */
806 #define HAMMER2_TRANS_SIDEQ 0x20000000 /* run sideq */
807 #define HAMMER2_TRANS_UNUSED10 0x10000000
808 #define HAMMER2_TRANS_WAITING 0x08000000 /* someone waiting */
809 #define HAMMER2_TRANS_RESCAN 0x04000000 /* rescan sideq */
810 #define HAMMER2_TRANS_MASK 0x00FFFFFF /* count mask */
812 #define HAMMER2_FREEMAP_HEUR_NRADIX 4 /* pwr 2 PBUFRADIX-LBUFRADIX */
813 #define HAMMER2_FREEMAP_HEUR_TYPES 8
814 #define HAMMER2_FREEMAP_HEUR_SIZE (HAMMER2_FREEMAP_HEUR_NRADIX * \
815 HAMMER2_FREEMAP_HEUR_TYPES)
817 #define HAMMER2_DEDUP_HEUR_SIZE (65536 * 4)
818 #define HAMMER2_DEDUP_HEUR_MASK (HAMMER2_DEDUP_HEUR_SIZE - 1)
820 #define HAMMER2_FLUSH_TOP 0x0001
821 #define HAMMER2_FLUSH_ALL 0x0002
822 #define HAMMER2_FLUSH_INODE_STOP 0x0004 /* stop at sub-inode */
823 #define HAMMER2_FLUSH_FSSYNC 0x0008 /* part of filesystem sync */
827 * Hammer2 support thread element.
829 * Potentially many support threads can hang off of hammer2, primarily
830 * off the hammer2_pfs structure. Typically:
832 * td x Nodes A synchronization thread for each node.
833 * td x Nodes x workers Worker threads for frontend operations.
834 * td x 1 Bioq thread for logical buffer writes.
836 * In addition, the synchronization thread(s) associated with the
837 * super-root PFS (spmp) for a node is responsible for automatic bulkfree
840 struct hammer2_thread
{
841 struct hammer2_pfs
*pmp
;
842 struct hammer2_dev
*hmp
;
843 hammer2_xop_list_t xopq
;
846 int clindex
; /* cluster element index */
848 char *scratch
; /* MAXPHYS */
851 typedef struct hammer2_thread hammer2_thread_t
;
853 #define HAMMER2_THREAD_UNMOUNTING 0x0001 /* unmount request */
854 #define HAMMER2_THREAD_DEV 0x0002 /* related to dev, not pfs */
855 #define HAMMER2_THREAD_WAITING 0x0004 /* thread in idle tsleep */
856 #define HAMMER2_THREAD_REMASTER 0x0008 /* remaster request */
857 #define HAMMER2_THREAD_STOP 0x0010 /* exit request */
858 #define HAMMER2_THREAD_FREEZE 0x0020 /* force idle */
859 #define HAMMER2_THREAD_FROZEN 0x0040 /* thread is frozen */
860 #define HAMMER2_THREAD_XOPQ 0x0080 /* work pending */
861 #define HAMMER2_THREAD_STOPPED 0x0100 /* thread has stopped */
862 #define HAMMER2_THREAD_UNFREEZE 0x0200
864 #define HAMMER2_THREAD_WAKEUP_MASK (HAMMER2_THREAD_UNMOUNTING | \
865 HAMMER2_THREAD_REMASTER | \
866 HAMMER2_THREAD_STOP | \
867 HAMMER2_THREAD_FREEZE | \
871 * Support structure for dedup heuristic.
873 struct hammer2_dedup
{
874 hammer2_off_t data_off
;
877 uint32_t saved_error
;
880 typedef struct hammer2_dedup hammer2_dedup_t
;
883 * hammer2_xop - container for VOP/XOP operation (allocated, not on stack).
885 * This structure is used to distribute a VOP operation across multiple
886 * nodes. It provides a rendezvous for concurrent node execution and
887 * can be detached from the frontend operation to allow the frontend to
890 * This structure also sequences operations on up to three inodes.
892 typedef void (*hammer2_xop_func_t
)(union hammer2_xop
*xop
, void *scratch
,
895 struct hammer2_xop_desc
{
896 hammer2_xop_func_t storage_func
; /* local storage function */
897 hammer2_xop_func_t dmsg_dispatch
; /* dmsg dispatch function */
898 hammer2_xop_func_t dmsg_process
; /* dmsg processing function */
902 typedef struct hammer2_xop_desc hammer2_xop_desc_t
;
904 struct hammer2_xop_fifo
{
905 TAILQ_ENTRY(hammer2_xop_head
) entry
;
906 hammer2_chain_t
*array
[HAMMER2_XOPFIFO
];
907 int errors
[HAMMER2_XOPFIFO
];
911 hammer2_thread_t
*thr
;
914 typedef struct hammer2_xop_fifo hammer2_xop_fifo_t
;
916 #define HAMMER2_XOP_FIFO_RUN 0x0001
917 #define HAMMER2_XOP_FIFO_STALL 0x0002
919 struct hammer2_xop_head
{
920 hammer2_xop_desc_t
*desc
;
922 struct hammer2_inode
*ip1
;
923 struct hammer2_inode
*ip2
;
924 struct hammer2_inode
*ip3
;
925 struct hammer2_inode
*ip4
;
931 hammer2_key_t collect_key
;
936 hammer2_xop_fifo_t collect
[HAMMER2_MAXCLUSTER
];
937 hammer2_cluster_t cluster
; /* help collections */
938 hammer2_io_t
*focus_dio
;
941 typedef struct hammer2_xop_head hammer2_xop_head_t
;
943 struct hammer2_xop_ipcluster
{
944 hammer2_xop_head_t head
;
947 struct hammer2_xop_strategy
{
948 hammer2_xop_head_t head
;
955 struct hammer2_xop_readdir
{
956 hammer2_xop_head_t head
;
960 struct hammer2_xop_nresolve
{
961 hammer2_xop_head_t head
;
962 hammer2_key_t lhc
; /* if name is NULL used lhc */
965 struct hammer2_xop_unlink
{
966 hammer2_xop_head_t head
;
971 #define H2DOPERM_PERMANENT 0x01
972 #define H2DOPERM_FORCE 0x02
973 #define H2DOPERM_IGNINO 0x04
975 struct hammer2_xop_nrename
{
976 hammer2_xop_head_t head
;
981 struct hammer2_xop_scanlhc
{
982 hammer2_xop_head_t head
;
986 struct hammer2_xop_scanall
{
987 hammer2_xop_head_t head
;
988 hammer2_key_t key_beg
; /* inclusive */
989 hammer2_key_t key_end
; /* inclusive */
994 struct hammer2_xop_lookup
{
995 hammer2_xop_head_t head
;
999 struct hammer2_xop_mkdirent
{
1000 hammer2_xop_head_t head
;
1001 hammer2_dirent_head_t dirent
;
1005 struct hammer2_xop_create
{
1006 hammer2_xop_head_t head
;
1007 hammer2_inode_meta_t meta
; /* initial metadata */
1012 struct hammer2_xop_destroy
{
1013 hammer2_xop_head_t head
;
1016 struct hammer2_xop_fsync
{
1017 hammer2_xop_head_t head
;
1018 hammer2_inode_meta_t meta
;
1019 hammer2_off_t osize
;
1021 int clear_directdata
;
1024 struct hammer2_xop_unlinkall
{
1025 hammer2_xop_head_t head
;
1026 hammer2_key_t key_beg
;
1027 hammer2_key_t key_end
;
1030 struct hammer2_xop_connect
{
1031 hammer2_xop_head_t head
;
1035 struct hammer2_xop_flush
{
1036 hammer2_xop_head_t head
;
1039 typedef struct hammer2_xop_readdir hammer2_xop_readdir_t
;
1040 typedef struct hammer2_xop_nresolve hammer2_xop_nresolve_t
;
1041 typedef struct hammer2_xop_unlink hammer2_xop_unlink_t
;
1042 typedef struct hammer2_xop_nrename hammer2_xop_nrename_t
;
1043 typedef struct hammer2_xop_ipcluster hammer2_xop_ipcluster_t
;
1044 typedef struct hammer2_xop_strategy hammer2_xop_strategy_t
;
1045 typedef struct hammer2_xop_mkdirent hammer2_xop_mkdirent_t
;
1046 typedef struct hammer2_xop_create hammer2_xop_create_t
;
1047 typedef struct hammer2_xop_destroy hammer2_xop_destroy_t
;
1048 typedef struct hammer2_xop_fsync hammer2_xop_fsync_t
;
1049 typedef struct hammer2_xop_unlinkall hammer2_xop_unlinkall_t
;
1050 typedef struct hammer2_xop_scanlhc hammer2_xop_scanlhc_t
;
1051 typedef struct hammer2_xop_scanall hammer2_xop_scanall_t
;
1052 typedef struct hammer2_xop_lookup hammer2_xop_lookup_t
;
1053 typedef struct hammer2_xop_connect hammer2_xop_connect_t
;
1054 typedef struct hammer2_xop_flush hammer2_xop_flush_t
;
1057 hammer2_xop_head_t head
;
1058 hammer2_xop_ipcluster_t xop_ipcluster
;
1059 hammer2_xop_readdir_t xop_readdir
;
1060 hammer2_xop_nresolve_t xop_nresolve
;
1061 hammer2_xop_unlink_t xop_unlink
;
1062 hammer2_xop_nrename_t xop_nrename
;
1063 hammer2_xop_strategy_t xop_strategy
;
1064 hammer2_xop_mkdirent_t xop_mkdirent
;
1065 hammer2_xop_create_t xop_create
;
1066 hammer2_xop_destroy_t xop_destroy
;
1067 hammer2_xop_fsync_t xop_fsync
;
1068 hammer2_xop_unlinkall_t xop_unlinkall
;
1069 hammer2_xop_scanlhc_t xop_scanlhc
;
1070 hammer2_xop_scanall_t xop_scanall
;
1071 hammer2_xop_lookup_t xop_lookup
;
1072 hammer2_xop_flush_t xop_flush
;
1073 hammer2_xop_connect_t xop_connect
;
1076 typedef union hammer2_xop hammer2_xop_t
;
1079 * hammer2_xop_group - Manage XOP support threads.
1081 struct hammer2_xop_group
{
1082 hammer2_thread_t thrs
[HAMMER2_MAXCLUSTER
];
1085 typedef struct hammer2_xop_group hammer2_xop_group_t
;
1088 * flags to hammer2_xop_collect()
1090 #define HAMMER2_XOP_COLLECT_NOWAIT 0x00000001
1091 #define HAMMER2_XOP_COLLECT_WAITALL 0x00000002
1094 * flags to hammer2_xop_alloc()
1096 * MODIFYING - This is a modifying transaction, allocate a mtid.
1098 #define HAMMER2_XOP_MODIFYING 0x00000001
1099 #define HAMMER2_XOP_STRATEGY 0x00000002
1100 #define HAMMER2_XOP_INODE_STOP 0x00000004
1101 #define HAMMER2_XOP_VOLHDR 0x00000008
1102 #define HAMMER2_XOP_FSSYNC 0x00000010
1105 * Device vnode management structure
1107 struct hammer2_devvp
{
1108 TAILQ_ENTRY(hammer2_devvp
) entry
;
1109 struct m_vnode
*devvp
; /* device vnode */
1110 char *path
; /* device vnode path */
1111 int open
; /* 1 if devvp open */
1114 typedef struct hammer2_devvp hammer2_devvp_t
;
1116 TAILQ_HEAD(hammer2_devvp_list
, hammer2_devvp
);
1118 typedef struct hammer2_devvp_list hammer2_devvp_list_t
;
1121 * Volume management structure
1123 struct hammer2_vfsvolume
{
1124 hammer2_devvp_t
*dev
; /* device vnode management */
1125 int id
; /* volume id */
1126 hammer2_off_t offset
; /* offset within volumes */
1127 hammer2_off_t size
; /* volume size */
1130 typedef struct hammer2_vfsvolume hammer2_vfsvolume_t
;
1133 * Global (per partition) management structure, represents a hard block
1134 * device. Typically referenced by hammer2_chain structures when applicable.
1135 * Typically not used for network-managed elements.
1137 * Note that a single hammer2_dev can be indirectly tied to multiple system
1138 * mount points. There is no direct relationship. System mounts are
1139 * per-cluster-id, not per-block-device, and a single hard mount might contain
1140 * many PFSs and those PFSs might combine together in various ways to form
1141 * the set of available clusters.
1143 struct hammer2_dev
{
1144 struct m_vnode
*devvp
; /* device vnode for root volume */
1145 int ronly
; /* read-only mount */
1146 int mount_count
; /* number of actively mounted PFSs */
1147 TAILQ_ENTRY(hammer2_dev
) mntentry
; /* hammer2_mntlist */
1149 struct malloc_type
*mchain_obj
;
1150 struct malloc_type
*mio_obj
;
1151 struct malloc_type
*mmsg
;
1152 //kdmsg_iocom_t iocom; /* volume-level dmsg interface */
1153 hammer2_spin_t io_spin
; /* iotree, iolruq access */
1154 struct hammer2_io_tree iotree
;
1156 int freemap_relaxed
;
1157 hammer2_chain_t vchain
; /* anchor chain (topology) */
1158 hammer2_chain_t fchain
; /* anchor chain (freemap) */
1159 hammer2_spin_t list_spin
;
1160 struct hammer2_pfs
*spmp
; /* super-root pmp for transactions */
1161 struct lock vollk
; /* lockmgr lock */
1162 struct lock bulklk
; /* bulkfree operation lock */
1163 struct lock bflock
; /* bulk-free manual function lock */
1164 hammer2_off_t heur_freemap
[HAMMER2_FREEMAP_HEUR_SIZE
];
1165 hammer2_dedup_t heur_dedup
[HAMMER2_DEDUP_HEUR_SIZE
];
1166 int volhdrno
; /* last volhdrno written */
1167 uint32_t hflags
; /* HMNT2 flags applicable to device */
1168 hammer2_off_t free_reserved
; /* nominal free reserved */
1169 hammer2_off_t total_size
; /* total size of volumes */
1170 int nvolumes
; /* total number of volumes */
1171 hammer2_thread_t bfthr
; /* bulk-free thread */
1172 char devrepname
[64]; /* for kprintf */
1173 hammer2_volume_data_t voldata
;
1174 hammer2_volume_data_t volsync
; /* synchronized voldata */
1176 hammer2_devvp_list_t devvpl
; /* list of device vnodes including *devvp */
1177 hammer2_vfsvolume_t volumes
[HAMMER2_MAX_VOLUMES
]; /* list of volumes */
1180 typedef struct hammer2_dev hammer2_dev_t
;
1183 * Per-cluster management structure. This structure will be tied to a
1184 * system mount point if the system is mounting the PFS, but is also used
1185 * to manage clusters encountered during the super-root scan or received
1186 * via LNK_SPANs that might not be mounted.
1188 * This structure is also used to represent the super-root that hangs off
1189 * of a hard mount point. The super-root is not really a cluster element.
1190 * In this case the spmp_hmp field will be non-NULL. It's just easier to do
1191 * this than to special case super-root manipulation in the hammer2_chain*
1192 * code as being only hammer2_dev-related.
1194 * pfs_mode and pfs_nmasters are rollup fields which critically describes
1195 * how elements of the cluster act on the cluster. pfs_mode is only applicable
1196 * when a PFS is mounted by the system. pfs_nmasters is our best guess as to
1197 * how many masters have been configured for a cluster and is always
1198 * applicable. pfs_types[] is an array with 1:1 correspondance to the
1199 * iroot cluster and describes the PFS types of the nodes making up the
1202 * WARNING! Portions of this structure have deferred initialization. In
1203 * particular, if not mounted there will be no wthread.
1204 * umounted network PFSs will also be missing iroot and numerous
1205 * other fields will not be initialized prior to mount.
1207 * Synchronization threads are chain-specific and only applicable
1208 * to local hard PFS entries. A hammer2_pfs structure may contain
1209 * more than one when multiple hard PFSs are present on the local
1210 * machine which require synchronization monitoring. Most PFSs
1211 * (such as snapshots) are 1xMASTER PFSs which do not need a
1212 * synchronization thread.
1214 * WARNING! The chains making up pfs->iroot's cluster are accounted for in
1215 * hammer2_dev->mount_count when the pfs is associated with a mount
1218 struct hammer2_pfs
{
1220 TAILQ_ENTRY(hammer2_pfs
) mntentry
; /* hammer2_pfslist */
1222 hammer2_dev_t
*spmp_hmp
; /* only if super-root pmp */
1223 hammer2_dev_t
*force_local
; /* only if 'local' mount */
1224 hammer2_inode_t
*iroot
; /* PFS root inode */
1225 uint8_t pfs_types
[HAMMER2_MAXCLUSTER
];
1226 char *pfs_names
[HAMMER2_MAXCLUSTER
];
1227 hammer2_dev_t
*pfs_hmps
[HAMMER2_MAXCLUSTER
];
1228 hammer2_blockset_t pfs_iroot_blocksets
[HAMMER2_MAXCLUSTER
];
1229 hammer2_trans_t trans
;
1230 struct lock lock
; /* PFS lock for certain ops */
1231 //struct netexport export; /* nfs export */
1233 int ronly
; /* read-only mount */
1234 int hflags
; /* pfs-specific mount flags */
1235 struct malloc_type
*minode_obj
;
1236 hammer2_spin_t inum_spin
; /* inumber lookup */
1237 struct hammer2_inode_tree inum_tree
; /* (not applicable to spmp) */
1238 long inum_count
; /* #of inodes in inum_tree */
1239 hammer2_spin_t lru_spin
;
1240 struct hammer2_chain_list lru_list
; /* basis for LRU tests */
1241 int lru_count
; /* #of chains on LRU */
1243 hammer2_tid_t modify_tid
; /* modify transaction id */
1244 hammer2_tid_t inode_tid
; /* inode allocator */
1245 uint8_t pfs_nmasters
; /* total masters */
1246 uint8_t pfs_mode
; /* operating mode PFSMODE */
1249 int free_ticks
; /* free_* calculations */
1251 hammer2_off_t free_reserved
;
1252 hammer2_off_t free_nominal
;
1253 uint32_t inmem_dirty_chains
;
1254 int count_lwinprog
; /* logical write in prog */
1255 hammer2_spin_t list_spin
;
1256 struct inoq_head syncq
; /* SYNCQ flagged inodes */
1257 struct depq_head depq
; /* SIDEQ flagged inodes */
1258 long sideq_count
; /* total inodes on depq */
1259 hammer2_thread_t sync_thrs
[HAMMER2_MAXCLUSTER
];
1260 uint32_t cluster_flags
; /* cached cluster flags */
1261 int has_xop_threads
;
1262 hammer2_spin_t xop_spin
; /* xop sequencer */
1263 hammer2_xop_group_t
*xop_groups
;
1266 typedef struct hammer2_pfs hammer2_pfs_t
;
1268 TAILQ_HEAD(hammer2_pfslist
, hammer2_pfs
);
1273 #define HAMMER2_PMPF_SPMP 0x00000001
1274 #define HAMMER2_PMPF_EMERG 0x00000002 /* Emergency delete mode */
1277 * NOTE: The LRU list contains at least all the chains with refs == 0
1278 * that can be recycled, and may contain additional chains which
1281 #define HAMMER2_LRU_LIMIT 4096
1283 #define HAMMER2_DIRTYCHAIN_WAITING 0x80000000
1284 #define HAMMER2_DIRTYCHAIN_MASK 0x7FFFFFFF
1286 #define HAMMER2_LWINPROG_WAITING 0x80000000
1287 #define HAMMER2_LWINPROG_WAITING0 0x40000000
1288 #define HAMMER2_LWINPROG_MASK 0x3FFFFFFF
1291 * hammer2_cluster_check
1293 #define HAMMER2_CHECK_NULL 0x00000001
1298 //#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
1299 #define VTOI(vp) ((hammer2_inode_t *)(vp)->v_data)
1302 //#if defined(_KERNEL)
1304 #ifdef MALLOC_DECLARE
1305 MALLOC_DECLARE(M_HAMMER2
);
1310 MPTOPMP(struct mount
*mp
)
1312 return ((hammer2_pfs_t
*)mp
->mnt_data
);
1315 #define HAMMER2_DEDUP_FRAG (HAMMER2_PBUFSIZE / 64)
1316 #define HAMMER2_DEDUP_FRAGRADIX (HAMMER2_PBUFRADIX - 6)
1320 hammer2_dedup_mask(hammer2_io_t
*dio
, hammer2_off_t data_off
, u_int bytes
)
1326 bbeg
= (int)((data_off
& ~HAMMER2_OFF_MASK_RADIX
) - dio
->pbase
) >>
1327 HAMMER2_DEDUP_FRAGRADIX
;
1328 bits
= (int)((bytes
+ (HAMMER2_DEDUP_FRAG
- 1)) >>
1329 HAMMER2_DEDUP_FRAGRADIX
);
1330 if (bbeg
+ bits
== 64)
1331 mask
= (uint64_t)-1;
1333 mask
= ((uint64_t)1 << (bbeg
+ bits
)) - 1;
1335 mask
&= ~(((uint64_t)1 << bbeg
) - 1);
1342 hammer2_error_to_errno(int error
)
1345 if (error
& HAMMER2_ERROR_EIO
)
1347 else if (error
& HAMMER2_ERROR_CHECK
)
1349 else if (error
& HAMMER2_ERROR_ABORTED
)
1351 else if (error
& HAMMER2_ERROR_BADBREF
)
1353 else if (error
& HAMMER2_ERROR_ENOSPC
)
1355 else if (error
& HAMMER2_ERROR_ENOENT
)
1357 else if (error
& HAMMER2_ERROR_ENOTEMPTY
)
1359 else if (error
& HAMMER2_ERROR_EAGAIN
)
1361 else if (error
& HAMMER2_ERROR_ENOTDIR
)
1363 else if (error
& HAMMER2_ERROR_EISDIR
)
1365 else if (error
& HAMMER2_ERROR_EINPROGRESS
)
1366 error
= EINPROGRESS
;
1367 else if (error
& HAMMER2_ERROR_EEXIST
)
1369 else if (error
& HAMMER2_ERROR_EINVAL
)
1371 else if (error
& HAMMER2_ERROR_EDEADLK
)
1373 else if (error
& HAMMER2_ERROR_ESRCH
)
1375 else if (error
& HAMMER2_ERROR_ETIMEDOUT
)
1385 hammer2_errno_to_error(int error
)
1391 return HAMMER2_ERROR_EIO
;
1393 return HAMMER2_ERROR_CHECK
;
1395 return HAMMER2_ERROR_ABORTED
;
1397 // return HAMMER2_ERROR_BADBREF;
1399 return HAMMER2_ERROR_ENOSPC
;
1401 return HAMMER2_ERROR_ENOENT
;
1403 return HAMMER2_ERROR_ENOTEMPTY
;
1405 return HAMMER2_ERROR_EAGAIN
;
1407 return HAMMER2_ERROR_ENOTDIR
;
1409 return HAMMER2_ERROR_EISDIR
;
1411 return HAMMER2_ERROR_EINPROGRESS
;
1413 return HAMMER2_ERROR_EEXIST
;
1415 return HAMMER2_ERROR_EINVAL
;
1417 return HAMMER2_ERROR_EDEADLK
;
1419 return HAMMER2_ERROR_ESRCH
;
1421 return HAMMER2_ERROR_ETIMEDOUT
;
1423 return HAMMER2_ERROR_EINVAL
;
1428 extern struct vop_ops hammer2_vnode_vops
;
1429 extern struct vop_ops hammer2_spec_vops
;
1430 extern struct vop_ops hammer2_fifo_vops
;
1431 extern struct hammer2_pfslist hammer2_pfslist
;
1432 extern struct lock hammer2_mntlk
;
1434 extern int hammer2_aux_flags
;
1435 extern int hammer2_debug
;
1436 extern int hammer2_xop_nthreads
;
1437 extern int hammer2_xop_sgroups
;
1438 extern int hammer2_xop_xgroups
;
1439 extern int hammer2_xop_xbase
;
1440 extern int hammer2_xop_mod
;
1441 extern long hammer2_debug_inode
;
1442 extern int hammer2_cluster_meta_read
;
1443 extern int hammer2_cluster_data_read
;
1444 extern int hammer2_cluster_write
;
1445 extern int hammer2_dedup_enable
;
1446 extern int hammer2_always_compress
;
1447 extern int hammer2_flush_pipe
;
1448 extern int hammer2_dio_count
;
1449 extern int hammer2_dio_limit
;
1450 extern int hammer2_bulkfree_tps
;
1451 extern int hammer2_spread_workers
;
1452 extern int hammer2_limit_saved_depth
;
1453 extern long hammer2_chain_allocs
;
1454 extern long hammer2_limit_saved_chains
;
1455 extern long hammer2_limit_dirty_chains
;
1456 extern long hammer2_limit_dirty_inodes
;
1457 extern long hammer2_count_modified_chains
;
1458 extern long hammer2_iod_file_read
;
1459 extern long hammer2_iod_meta_read
;
1460 extern long hammer2_iod_indr_read
;
1461 extern long hammer2_iod_fmap_read
;
1462 extern long hammer2_iod_volu_read
;
1463 extern long hammer2_iod_file_write
;
1464 extern long hammer2_iod_file_wembed
;
1465 extern long hammer2_iod_file_wzero
;
1466 extern long hammer2_iod_file_wdedup
;
1467 extern long hammer2_iod_meta_write
;
1468 extern long hammer2_iod_indr_write
;
1469 extern long hammer2_iod_fmap_write
;
1470 extern long hammer2_iod_volu_write
;
1472 extern long hammer2_process_icrc32
;
1473 extern long hammer2_process_xxhash64
;
1475 extern struct objcache
*cache_buffer_read
;
1476 extern struct objcache
*cache_buffer_write
;
1477 extern struct objcache
*cache_xops
;
1482 #define hammer2_icrc32(buf, size) iscsi_crc32((buf), (size))
1483 #define hammer2_icrc32c(buf, size, crc) iscsi_crc32_ext((buf), (size), (crc))
1485 int hammer2_signal_check(time_t *timep
);
1486 const char *hammer2_error_str(int error
);
1487 const char *hammer2_bref_type_str(int btype
);
1489 int hammer2_get_dtype(uint8_t type
);
1490 int hammer2_get_vtype(uint8_t type
);
1491 uint8_t hammer2_get_obj_type(enum vtype vtype
);
1492 void hammer2_time_to_timespec(uint64_t xtime
, struct timespec
*ts
);
1493 uint64_t hammer2_timespec_to_time(const struct timespec
*ts
);
1494 uint32_t hammer2_to_unix_xid(const uuid_t
*uuid
);
1495 void hammer2_guid_to_uuid(uuid_t
*uuid
, uint32_t guid
);
1497 hammer2_key_t
hammer2_dirhash(const char *aname
, size_t len
);
1498 int hammer2_getradix(size_t bytes
);
1500 int hammer2_calc_logical(hammer2_inode_t
*ip
, hammer2_off_t uoff
,
1501 hammer2_key_t
*lbasep
, hammer2_key_t
*leofp
);
1502 int hammer2_calc_physical(hammer2_inode_t
*ip
, hammer2_key_t lbase
);
1503 void hammer2_update_time(uint64_t *timep
, bool is_mtime
);
1504 void hammer2_adjreadcounter(int btype
, size_t bytes
);
1505 void hammer2_adjwritecounter(int btype
, size_t bytes
);
1510 struct m_vnode
*hammer2_igetv(hammer2_inode_t
*ip
, int *errorp
);
1511 hammer2_inode_t
*hammer2_inode_lookup(hammer2_pfs_t
*pmp
,
1512 hammer2_tid_t inum
);
1513 hammer2_inode_t
*hammer2_inode_get(hammer2_pfs_t
*pmp
,
1514 hammer2_xop_head_t
*xop
, hammer2_tid_t inum
, int idx
);
1515 void hammer2_inode_ref(hammer2_inode_t
*ip
);
1516 void hammer2_inode_drop(hammer2_inode_t
*ip
);
1517 void hammer2_inode_repoint(hammer2_inode_t
*ip
, hammer2_cluster_t
*cluster
);
1518 void hammer2_inode_repoint_one(hammer2_inode_t
*ip
, hammer2_cluster_t
*cluster
,
1520 hammer2_key_t
hammer2_inode_data_count(const hammer2_inode_t
*ip
);
1521 hammer2_key_t
hammer2_inode_inode_count(const hammer2_inode_t
*ip
);
1522 void hammer2_inode_modify(hammer2_inode_t
*ip
);
1523 void hammer2_inode_delayed_sideq(hammer2_inode_t
*ip
);
1524 void hammer2_inode_lock(hammer2_inode_t
*ip
, int how
);
1525 void hammer2_inode_lock4(hammer2_inode_t
*ip1
, hammer2_inode_t
*ip2
,
1526 hammer2_inode_t
*ip3
, hammer2_inode_t
*ip4
);
1527 void hammer2_inode_unlock(hammer2_inode_t
*ip
);
1528 void hammer2_inode_depend(hammer2_inode_t
*ip1
, hammer2_inode_t
*ip2
);
1529 hammer2_chain_t
*hammer2_inode_chain(hammer2_inode_t
*ip
, int clindex
, int how
);
1530 hammer2_chain_t
*hammer2_inode_chain_and_parent(hammer2_inode_t
*ip
,
1531 int clindex
, hammer2_chain_t
**parentp
, int how
);
1532 hammer2_mtx_state_t
hammer2_inode_lock_temp_release(hammer2_inode_t
*ip
);
1533 void hammer2_inode_lock_temp_restore(hammer2_inode_t
*ip
,
1534 hammer2_mtx_state_t ostate
);
1535 int hammer2_inode_lock_upgrade(hammer2_inode_t
*ip
);
1536 void hammer2_inode_lock_downgrade(hammer2_inode_t
*ip
, int);
1538 hammer2_inode_t
*hammer2_inode_create_normal(hammer2_inode_t
*pip
,
1539 struct vattr
*vap
, struct ucred
*cred
,
1540 hammer2_key_t inum
, int *errorp
);
1541 hammer2_inode_t
*hammer2_inode_create_pfs(hammer2_pfs_t
*spmp
,
1542 const char *name
, size_t name_len
,
1544 int hammer2_inode_chain_ins(hammer2_inode_t
*ip
);
1545 int hammer2_inode_chain_des(hammer2_inode_t
*ip
);
1546 int hammer2_inode_chain_sync(hammer2_inode_t
*ip
);
1547 int hammer2_inode_chain_flush(hammer2_inode_t
*ip
, int flags
);
1548 int hammer2_inode_unlink_finisher(hammer2_inode_t
*ip
, struct m_vnode
**vpp
);
1549 void hammer2_inode_vprecycle(struct m_vnode
*vp
);
1550 int hammer2_dirent_create(hammer2_inode_t
*dip
, const char *name
,
1551 size_t name_len
, hammer2_key_t inum
, uint8_t type
);
1553 hammer2_key_t
hammer2_pfs_inode_count(hammer2_pfs_t
*pmp
);
1554 int vflush(struct mount
*mp
, int rootrefs
, int flags
);
1559 hammer2_chain_t
*hammer2_chain_alloc(hammer2_dev_t
*hmp
,
1561 hammer2_blockref_t
*bref
);
1562 void hammer2_chain_init(hammer2_chain_t
*chain
);
1563 void hammer2_chain_ref(hammer2_chain_t
*chain
);
1564 void hammer2_chain_ref_hold(hammer2_chain_t
*chain
);
1565 void hammer2_chain_drop(hammer2_chain_t
*chain
);
1566 void hammer2_chain_drop_unhold(hammer2_chain_t
*chain
);
1567 void hammer2_chain_unhold(hammer2_chain_t
*chain
);
1568 void hammer2_chain_rehold(hammer2_chain_t
*chain
);
1569 int hammer2_chain_lock(hammer2_chain_t
*chain
, int how
);
1570 //void hammer2_chain_lock_unhold(hammer2_chain_t *chain, int how);
1571 void hammer2_chain_load_data(hammer2_chain_t
*chain
);
1573 int hammer2_chain_inode_find(hammer2_pfs_t
*pmp
, hammer2_key_t inum
,
1574 int clindex
, int flags
,
1575 hammer2_chain_t
**parentp
,
1576 hammer2_chain_t
**chainp
);
1577 int hammer2_chain_modify(hammer2_chain_t
*chain
, hammer2_tid_t mtid
,
1578 hammer2_off_t dedup_off
, int flags
);
1579 int hammer2_chain_modify_ip(hammer2_inode_t
*ip
, hammer2_chain_t
*chain
,
1580 hammer2_tid_t mtid
, int flags
);
1581 int hammer2_chain_resize(hammer2_chain_t
*chain
,
1582 hammer2_tid_t mtid
, hammer2_off_t dedup_off
,
1583 int nradix
, int flags
);
1584 void hammer2_chain_unlock(hammer2_chain_t
*chain
);
1585 //void hammer2_chain_unlock_hold(hammer2_chain_t *chain);
1586 hammer2_chain_t
*hammer2_chain_get(hammer2_chain_t
*parent
, int generation
,
1587 hammer2_blockref_t
*bref
, int how
);
1588 hammer2_chain_t
*hammer2_chain_lookup_init(hammer2_chain_t
*parent
, int flags
);
1589 void hammer2_chain_lookup_done(hammer2_chain_t
*parent
);
1590 hammer2_chain_t
*hammer2_chain_getparent(hammer2_chain_t
*chain
, int flags
);
1591 hammer2_chain_t
*hammer2_chain_repparent(hammer2_chain_t
**chainp
, int flags
);
1592 hammer2_chain_t
*hammer2_chain_lookup(hammer2_chain_t
**parentp
,
1593 hammer2_key_t
*key_nextp
,
1594 hammer2_key_t key_beg
, hammer2_key_t key_end
,
1595 int *errorp
, int flags
);
1596 hammer2_chain_t
*hammer2_chain_next(hammer2_chain_t
**parentp
,
1597 hammer2_chain_t
*chain
,
1598 hammer2_key_t
*key_nextp
,
1599 hammer2_key_t key_beg
, hammer2_key_t key_end
,
1600 int *errorp
, int flags
);
1601 int hammer2_chain_scan(hammer2_chain_t
*parent
,
1602 hammer2_chain_t
**chainp
,
1603 hammer2_blockref_t
*bref
,
1604 int *firstp
, int flags
);
1606 int hammer2_chain_create(hammer2_chain_t
**parentp
, hammer2_chain_t
**chainp
,
1607 hammer2_dev_t
*hmp
, hammer2_pfs_t
*pmp
,
1608 int methods
, hammer2_key_t key
, int keybits
,
1609 int type
, size_t bytes
, hammer2_tid_t mtid
,
1610 hammer2_off_t dedup_off
, int flags
);
1611 void hammer2_chain_rename(hammer2_chain_t
**parentp
,
1612 hammer2_chain_t
*chain
,
1613 hammer2_tid_t mtid
, int flags
);
1614 int hammer2_chain_delete(hammer2_chain_t
*parent
, hammer2_chain_t
*chain
,
1615 hammer2_tid_t mtid
, int flags
);
1616 int hammer2_chain_indirect_maintenance(hammer2_chain_t
*parent
,
1617 hammer2_chain_t
*chain
);
1618 void hammer2_chain_setflush(hammer2_chain_t
*chain
);
1619 void hammer2_chain_countbrefs(hammer2_chain_t
*chain
,
1620 hammer2_blockref_t
*base
, int count
);
1621 hammer2_chain_t
*hammer2_chain_bulksnap(hammer2_dev_t
*hmp
);
1622 void hammer2_chain_bulkdrop(hammer2_chain_t
*copy
);
1624 void hammer2_chain_setcheck(hammer2_chain_t
*chain
, void *bdata
);
1625 int hammer2_chain_testcheck(hammer2_chain_t
*chain
, void *bdata
);
1626 int hammer2_chain_dirent_test(hammer2_chain_t
*chain
, const char *name
,
1629 void hammer2_base_delete(hammer2_chain_t
*parent
,
1630 hammer2_blockref_t
*base
, int count
,
1631 hammer2_chain_t
*chain
,
1632 hammer2_blockref_t
*obref
);
1633 void hammer2_base_insert(hammer2_chain_t
*parent
,
1634 hammer2_blockref_t
*base
, int count
,
1635 hammer2_chain_t
*chain
,
1636 hammer2_blockref_t
*elm
);
1637 void hammer2_dump_chain(hammer2_chain_t
*chain
, int tab
, int bi
, int *countp
,
1638 char pfx
, u_int flags
);
1639 void hammer2_dump_chains(hammer2_dev_t
*hmp
, char vpfx
, char fpfx
);
1644 void hammer2_trans_manage_init(hammer2_pfs_t
*pmp
);
1645 int hammer2_flush(hammer2_chain_t
*chain
, int istop
);
1646 void hammer2_trans_init(hammer2_pfs_t
*pmp
, uint32_t flags
);
1647 void hammer2_trans_setflags(hammer2_pfs_t
*pmp
, uint32_t flags
);
1648 void hammer2_trans_clearflags(hammer2_pfs_t
*pmp
, uint32_t flags
);
1649 hammer2_tid_t
hammer2_trans_sub(hammer2_pfs_t
*pmp
);
1650 void hammer2_trans_done(hammer2_pfs_t
*pmp
, uint32_t flags
);
1651 hammer2_tid_t
hammer2_trans_newinum(hammer2_pfs_t
*pmp
);
1652 void hammer2_trans_assert_strategy(hammer2_pfs_t
*pmp
);
1657 int hammer2_ioctl(hammer2_inode_t
*ip
, u_long com
, void *data
,
1658 int fflag
, struct ucred
*cred
);
1659 int hammer2_ioctl_version_get(hammer2_inode_t
*ip
, void *data
);
1660 int hammer2_ioctl_pfs_get(hammer2_inode_t
*ip
, void *data
);
1661 int hammer2_ioctl_pfs_lookup(hammer2_inode_t
*ip
, void *data
);
1662 int hammer2_ioctl_pfs_create(hammer2_inode_t
*ip
, void *data
);
1663 int hammer2_ioctl_pfs_delete(hammer2_inode_t
*ip
, void *data
);
1664 int hammer2_ioctl_pfs_snapshot(hammer2_inode_t
*ip
, void *data
);
1665 int hammer2_ioctl_inode_get(hammer2_inode_t
*ip
, void *data
);
1666 int hammer2_ioctl_inode_set(hammer2_inode_t
*ip
, void *data
);
1667 int hammer2_ioctl_emerg_mode(hammer2_inode_t
*ip
, u_int mode
);
1668 int hammer2_ioctl_bulkfree_scan(hammer2_inode_t
*ip
, void *data
);
1669 int hammer2_ioctl_destroy(hammer2_inode_t
*ip
, void *data
);
1670 int hammer2_ioctl_growfs(hammer2_inode_t
*ip
, void *data
, struct ucred
*cred
);
1675 void hammer2_io_inval(hammer2_io_t
*dio
, hammer2_off_t data_off
, u_int bytes
);
1676 void hammer2_io_cleanup(hammer2_dev_t
*hmp
, struct hammer2_io_tree
*tree
);
1677 char *hammer2_io_data(hammer2_io_t
*dio
, off_t lbase
);
1678 void hammer2_io_bkvasync(hammer2_io_t
*dio
);
1679 void hammer2_io_dedup_set(hammer2_dev_t
*hmp
, hammer2_blockref_t
*bref
);
1680 void hammer2_io_dedup_delete(hammer2_dev_t
*hmp
, uint8_t btype
,
1681 hammer2_off_t data_off
, u_int bytes
);
1682 void hammer2_io_dedup_assert(hammer2_dev_t
*hmp
, hammer2_off_t data_off
,
1684 int hammer2_io_new(hammer2_dev_t
*hmp
, int btype
, off_t lbase
, int lsize
,
1685 hammer2_io_t
**diop
);
1686 int hammer2_io_newnz(hammer2_dev_t
*hmp
, int btype
, off_t lbase
, int lsize
,
1687 hammer2_io_t
**diop
);
1688 int _hammer2_io_bread(hammer2_dev_t
*hmp
, int btype
, off_t lbase
, int lsize
,
1689 hammer2_io_t
**diop HAMMER2_IO_DEBUG_ARGS
);
1690 void hammer2_io_setdirty(hammer2_io_t
*dio
);
1692 hammer2_io_t
*_hammer2_io_getblk(hammer2_dev_t
*hmp
, int btype
, off_t lbase
,
1693 int lsize
, int op HAMMER2_IO_DEBUG_ARGS
);
1694 hammer2_io_t
*_hammer2_io_getquick(hammer2_dev_t
*hmp
, off_t lbase
,
1695 int lsize HAMMER2_IO_DEBUG_ARGS
);
1696 void _hammer2_io_putblk(hammer2_io_t
**diop HAMMER2_IO_DEBUG_ARGS
);
1697 int _hammer2_io_bwrite(hammer2_io_t
**diop HAMMER2_IO_DEBUG_ARGS
);
1698 void _hammer2_io_bawrite(hammer2_io_t
**diop HAMMER2_IO_DEBUG_ARGS
);
1699 void _hammer2_io_bdwrite(hammer2_io_t
**diop HAMMER2_IO_DEBUG_ARGS
);
1700 void _hammer2_io_brelse(hammer2_io_t
**diop HAMMER2_IO_DEBUG_ARGS
);
1701 void _hammer2_io_bqrelse(hammer2_io_t
**diop HAMMER2_IO_DEBUG_ARGS
);
1702 void _hammer2_io_ref(hammer2_io_t
*dio HAMMER2_IO_DEBUG_ARGS
);
1704 #ifndef HAMMER2_IO_DEBUG
1706 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \
1707 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op))
1708 #define hammer2_io_getquick(hmp, lbase, lsize) \
1709 _hammer2_io_getquick((hmp), (lbase), (lsize))
1710 #define hammer2_io_putblk(diop) \
1711 _hammer2_io_putblk(diop)
1712 #define hammer2_io_bwrite(diop) \
1713 _hammer2_io_bwrite((diop))
1714 #define hammer2_io_bawrite(diop) \
1715 _hammer2_io_bawrite((diop))
1716 #define hammer2_io_bdwrite(diop) \
1717 _hammer2_io_bdwrite((diop))
1718 #define hammer2_io_brelse(diop) \
1719 _hammer2_io_brelse((diop))
1720 #define hammer2_io_bqrelse(diop) \
1721 _hammer2_io_bqrelse((diop))
1722 #define hammer2_io_ref(dio) \
1723 _hammer2_io_ref((dio))
1725 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \
1726 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop))
1730 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \
1731 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op), \
1734 #define hammer2_io_getquick(hmp, lbase, lsize) \
1735 _hammer2_io_getquick((hmp), (lbase), (lsize), __FILE__, __LINE__)
1737 #define hammer2_io_putblk(diop) \
1738 _hammer2_io_putblk(diop, __FILE__, __LINE__)
1740 #define hammer2_io_bwrite(diop) \
1741 _hammer2_io_bwrite((diop), __FILE__, __LINE__)
1742 #define hammer2_io_bawrite(diop) \
1743 _hammer2_io_bawrite((diop), __FILE__, __LINE__)
1744 #define hammer2_io_bdwrite(diop) \
1745 _hammer2_io_bdwrite((diop), __FILE__, __LINE__)
1746 #define hammer2_io_brelse(diop) \
1747 _hammer2_io_brelse((diop), __FILE__, __LINE__)
1748 #define hammer2_io_bqrelse(diop) \
1749 _hammer2_io_bqrelse((diop), __FILE__, __LINE__)
1750 #define hammer2_io_ref(dio) \
1751 _hammer2_io_ref((dio), __FILE__, __LINE__)
1753 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \
1754 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop), \
1762 void hammer2_thr_signal(hammer2_thread_t
*thr
, uint32_t flags
);
1763 void hammer2_thr_signal2(hammer2_thread_t
*thr
,
1764 uint32_t pflags
, uint32_t nflags
);
1765 void hammer2_thr_wait(hammer2_thread_t
*thr
, uint32_t flags
);
1766 void hammer2_thr_wait_neg(hammer2_thread_t
*thr
, uint32_t flags
);
1767 int hammer2_thr_wait_any(hammer2_thread_t
*thr
, uint32_t flags
, int timo
);
1768 void hammer2_thr_create(hammer2_thread_t
*thr
,
1769 hammer2_pfs_t
*pmp
, hammer2_dev_t
*hmp
,
1770 const char *id
, int clindex
, int repidx
,
1771 void (*func
)(void *arg
));
1772 void hammer2_thr_delete(hammer2_thread_t
*thr
);
1773 void hammer2_thr_remaster(hammer2_thread_t
*thr
);
1774 void hammer2_thr_freeze_async(hammer2_thread_t
*thr
);
1775 void hammer2_thr_freeze(hammer2_thread_t
*thr
);
1776 void hammer2_thr_unfreeze(hammer2_thread_t
*thr
);
1777 int hammer2_thr_break(hammer2_thread_t
*thr
);
1778 void hammer2_primary_xops_thread(void *arg
);
1781 * hammer2_thread.c (XOP API)
1783 void *hammer2_xop_alloc(hammer2_inode_t
*ip
, int flags
);
1784 void hammer2_xop_setname(hammer2_xop_head_t
*xop
,
1785 const char *name
, size_t name_len
);
1786 void hammer2_xop_setname2(hammer2_xop_head_t
*xop
,
1787 const char *name
, size_t name_len
);
1788 size_t hammer2_xop_setname_inum(hammer2_xop_head_t
*xop
, hammer2_key_t inum
);
1789 void hammer2_xop_setip2(hammer2_xop_head_t
*xop
, hammer2_inode_t
*ip2
);
1790 void hammer2_xop_setip3(hammer2_xop_head_t
*xop
, hammer2_inode_t
*ip3
);
1791 void hammer2_xop_setip4(hammer2_xop_head_t
*xop
, hammer2_inode_t
*ip4
);
1792 void hammer2_xop_reinit(hammer2_xop_head_t
*xop
);
1793 void hammer2_xop_helper_create(hammer2_pfs_t
*pmp
);
1794 void hammer2_xop_helper_cleanup(hammer2_pfs_t
*pmp
);
1795 void hammer2_xop_start(hammer2_xop_head_t
*xop
, hammer2_xop_desc_t
*desc
);
1796 void hammer2_xop_start_except(hammer2_xop_head_t
*xop
, hammer2_xop_desc_t
*desc
,
1798 int hammer2_xop_collect(hammer2_xop_head_t
*xop
, int flags
);
1799 void hammer2_xop_retire(hammer2_xop_head_t
*xop
, uint64_t mask
);
1800 int hammer2_xop_active(hammer2_xop_head_t
*xop
);
1801 int hammer2_xop_feed(hammer2_xop_head_t
*xop
, hammer2_chain_t
*chain
,
1802 int clindex
, int error
);
1807 void hammer2_primary_sync_thread(void *arg
);
1810 * XOP backends in hammer2_xops.c, primarily for VNOPS. Other XOP backends
1811 * may be integrated into other source files.
1813 void hammer2_xop_ipcluster(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1814 void hammer2_xop_readdir(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1815 void hammer2_xop_nresolve(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1816 void hammer2_xop_unlink(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1817 void hammer2_xop_nrename(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1818 void hammer2_xop_scanlhc(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1819 void hammer2_xop_scanall(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1820 void hammer2_xop_lookup(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1821 void hammer2_xop_delete(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1822 void hammer2_xop_inode_mkdirent(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1823 void hammer2_xop_inode_create(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1824 void hammer2_xop_inode_create_det(hammer2_xop_t
*xop
,
1825 void *scratch
, int clindex
);
1826 void hammer2_xop_inode_create_ins(hammer2_xop_t
*xop
,
1827 void *scratch
, int clindex
);
1828 void hammer2_xop_inode_destroy(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1829 void hammer2_xop_inode_chain_sync(hammer2_xop_t
*xop
, void *scratch
,
1831 void hammer2_xop_inode_unlinkall(hammer2_xop_t
*xop
, void *scratch
,
1833 void hammer2_xop_inode_connect(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1834 void hammer2_xop_inode_flush(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1835 void hammer2_xop_strategy_read(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1836 void hammer2_xop_strategy_write(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1838 void hammer2_dmsg_ipcluster(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1839 void hammer2_dmsg_readdir(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1840 void hammer2_dmsg_nresolve(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1841 void hammer2_dmsg_unlink(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1842 void hammer2_dmsg_nrename(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1843 void hammer2_dmsg_scanlhc(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1844 void hammer2_dmsg_scanall(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1845 void hammer2_dmsg_lookup(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1846 void hammer2_dmsg_inode_mkdirent(hammer2_xop_t
*xop
, void *scratch
,
1848 void hammer2_dmsg_inode_create(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1849 void hammer2_dmsg_inode_destroy(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1850 void hammer2_dmsg_inode_chain_sync(hammer2_xop_t
*xop
, void *scratch
,
1852 void hammer2_dmsg_inode_unlinkall(hammer2_xop_t
*xop
, void *scratch
,
1854 void hammer2_dmsg_inode_connect(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1855 void hammer2_dmsg_inode_flush(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1856 void hammer2_dmsg_strategy_read(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1857 void hammer2_dmsg_strategy_write(hammer2_xop_t
*xop
, void *scratch
,
1860 void hammer2_rmsg_ipcluster(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1861 void hammer2_rmsg_readdir(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1862 void hammer2_rmsg_nresolve(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1863 void hammer2_rmsg_unlink(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1864 void hammer2_rmsg_nrename(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1865 void hammer2_rmsg_scanlhc(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1866 void hammer2_rmsg_scanall(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1867 void hammer2_rmsg_lookup(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1868 void hammer2_rmsg_inode_mkdirent(hammer2_xop_t
*xop
, void *scratch
,
1870 void hammer2_rmsg_inode_create(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1871 void hammer2_rmsg_inode_destroy(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1872 void hammer2_rmsg_inode_chain_sync(hammer2_xop_t
*xop
, void *scratch
,
1874 void hammer2_rmsg_inode_unlinkall(hammer2_xop_t
*xop
, void *scratch
,
1876 void hammer2_rmsg_inode_connect(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1877 void hammer2_rmsg_inode_flush(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1878 void hammer2_rmsg_strategy_read(hammer2_xop_t
*xop
, void *scratch
, int clindex
);
1879 void hammer2_rmsg_strategy_write(hammer2_xop_t
*xop
, void *scratch
,
1882 extern hammer2_xop_desc_t hammer2_ipcluster_desc
;
1883 extern hammer2_xop_desc_t hammer2_readdir_desc
;
1884 extern hammer2_xop_desc_t hammer2_nresolve_desc
;
1885 extern hammer2_xop_desc_t hammer2_unlink_desc
;
1886 extern hammer2_xop_desc_t hammer2_nrename_desc
;
1887 extern hammer2_xop_desc_t hammer2_scanlhc_desc
;
1888 extern hammer2_xop_desc_t hammer2_scanall_desc
;
1889 extern hammer2_xop_desc_t hammer2_lookup_desc
;
1890 extern hammer2_xop_desc_t hammer2_delete_desc
;
1891 extern hammer2_xop_desc_t hammer2_inode_mkdirent_desc
;
1892 extern hammer2_xop_desc_t hammer2_inode_create_desc
;
1893 extern hammer2_xop_desc_t hammer2_inode_create_det_desc
;
1894 extern hammer2_xop_desc_t hammer2_inode_create_ins_desc
;
1895 extern hammer2_xop_desc_t hammer2_inode_destroy_desc
;
1896 extern hammer2_xop_desc_t hammer2_inode_chain_sync_desc
;
1897 extern hammer2_xop_desc_t hammer2_inode_unlinkall_desc
;
1898 extern hammer2_xop_desc_t hammer2_inode_connect_desc
;
1899 extern hammer2_xop_desc_t hammer2_inode_flush_desc
;
1900 extern hammer2_xop_desc_t hammer2_strategy_read_desc
;
1901 extern hammer2_xop_desc_t hammer2_strategy_write_desc
;
1907 int hammer2_msg_dbg_rcvmsg(kdmsg_msg_t *msg);
1908 int hammer2_msg_adhoc_input(kdmsg_msg_t *msg);
1914 int hammer2_vfs_sync(struct mount
*mp
, int waitflags
);
1915 int hammer2_vfs_sync_pmp(hammer2_pfs_t
*pmp
, int waitfor
);
1916 int hammer2_vfs_enospace(hammer2_inode_t
*ip
, off_t bytes
, struct ucred
*cred
);
1918 hammer2_pfs_t
*hammer2_pfsalloc(hammer2_chain_t
*chain
,
1919 const hammer2_inode_data_t
*ripdata
,
1920 hammer2_dev_t
*force_local
);
1921 void hammer2_pfsdealloc(hammer2_pfs_t
*pmp
, int clindex
, int destroying
);
1922 int hammer2_vfs_vget(struct mount
*mp
, struct m_vnode
*dvp
,
1923 ino_t ino
, struct m_vnode
**vpp
);
1924 int hammer2_vfs_root(struct mount
*mp
, struct m_vnode
**vpp
);
1926 void hammer2_lwinprog_ref(hammer2_pfs_t
*pmp
);
1927 void hammer2_lwinprog_drop(hammer2_pfs_t
*pmp
);
1928 void hammer2_lwinprog_wait(hammer2_pfs_t
*pmp
, int pipe
);
1930 void hammer2_pfs_memory_wait(hammer2_pfs_t
*pmp
);
1931 void hammer2_pfs_memory_inc(hammer2_pfs_t
*pmp
);
1932 void hammer2_pfs_memory_wakeup(hammer2_pfs_t
*pmp
, int count
);
1934 void hammer2_voldata_lock(hammer2_dev_t
*hmp
);
1935 void hammer2_voldata_unlock(hammer2_dev_t
*hmp
);
1936 void hammer2_voldata_modify(hammer2_dev_t
*hmp
);
1938 int hammer2_vfs_init(void);
1939 int hammer2_vfs_uninit(void);
1941 int hammer2_vfs_mount(struct m_vnode
*makefs_devvp
, struct mount
*mp
,
1942 const char *label
, const struct hammer2_mount_info
*mi
);
1943 int hammer2_vfs_unmount(struct mount
*mp
, int mntflags
);
1948 int hammer2_freemap_alloc(hammer2_chain_t
*chain
, size_t bytes
);
1949 void hammer2_freemap_adjust(hammer2_dev_t
*hmp
,
1950 hammer2_blockref_t
*bref
, int how
);
1955 uint8_t hammer2_cluster_type(hammer2_cluster_t
*cluster
);
1956 void hammer2_cluster_bref(hammer2_cluster_t
*cluster
, hammer2_blockref_t
*bref
);
1957 void hammer2_cluster_ref(hammer2_cluster_t
*cluster
);
1958 void hammer2_cluster_drop(hammer2_cluster_t
*cluster
);
1959 void hammer2_cluster_unhold(hammer2_cluster_t
*cluster
);
1960 void hammer2_cluster_rehold(hammer2_cluster_t
*cluster
);
1961 void hammer2_cluster_lock(hammer2_cluster_t
*cluster
, int how
);
1962 int hammer2_cluster_check(hammer2_cluster_t
*cluster
, hammer2_key_t lokey
,
1964 void hammer2_cluster_unlock(hammer2_cluster_t
*cluster
);
1966 void hammer2_bulkfree_init(hammer2_dev_t
*hmp
);
1967 void hammer2_bulkfree_uninit(hammer2_dev_t
*hmp
);
1968 int hammer2_bulkfree_pass(hammer2_dev_t
*hmp
, hammer2_chain_t
*vchain
,
1969 struct hammer2_ioc_bulkfree
*bfi
);
1970 void hammer2_dummy_xop_from_chain(hammer2_xop_head_t
*xop
,
1971 hammer2_chain_t
*chain
);
1977 void hammer2_iocom_init(hammer2_dev_t *hmp);
1978 void hammer2_iocom_uninit(hammer2_dev_t *hmp);
1979 void hammer2_cluster_reconnect(hammer2_dev_t *hmp, struct file *fp);
1981 void hammer2_volconf_update(hammer2_dev_t
*hmp
, int index
);
1984 * hammer2_strategy.c
1986 int hammer2_vop_strategy(struct vop_strategy_args
*ap
);
1987 int hammer2_vop_bmap(struct vop_bmap_args
*ap
);
1988 void hammer2_bioq_sync(hammer2_pfs_t
*pmp
);
1989 void hammer2_dedup_record(hammer2_chain_t
*chain
, hammer2_io_t
*dio
,
1991 void hammer2_dedup_clear(hammer2_dev_t
*hmp
);
1996 int hammer2_open_devvp(const hammer2_devvp_list_t
*devvpl
, int ronly
);
1997 int hammer2_close_devvp(const hammer2_devvp_list_t
*devvpl
, int ronly
);
1998 int hammer2_init_devvp(struct m_vnode
*devvp
, hammer2_devvp_list_t
*devvpl
);
1999 void hammer2_cleanup_devvp(hammer2_devvp_list_t
*devvpl
);
2000 int hammer2_init_vfsvolumes(struct mount
*mp
, const hammer2_devvp_list_t
*devvpl
,
2001 hammer2_vfsvolume_t
*volumes
,
2002 hammer2_volume_data_t
*rootvoldata
,
2004 struct m_vnode
**rootvoldevvp
);
2005 hammer2_vfsvolume_t
*hammer2_get_volume(hammer2_dev_t
*hmp
, hammer2_off_t offset
);
2010 int hammer2_reclaim(struct m_vnode
*vp
);
2011 int hammer2_write(struct m_vnode
*vp
, void *buf
, size_t size
, off_t offset
);
2012 int hammer2_nresolve(struct m_vnode
*dvp
, struct m_vnode
**vpp
, char *name
, int nlen
);
2013 int hammer2_nmkdir(struct m_vnode
*dvp
, struct m_vnode
**vpp
, char *name
, int nlen
,
2015 int hammer2_nlink(struct m_vnode
*dvp
, struct m_vnode
*vp
, char *name
, int nlen
);
2016 int hammer2_ncreate(struct m_vnode
*dvp
, struct m_vnode
**vpp
, char *name
, int nlen
,
2018 int hammer2_nmknod(struct m_vnode
*dvp
, struct m_vnode
**vpp
, char *name
, int nlen
,
2019 int type
, mode_t mode
);
2020 int hammer2_nsymlink(struct m_vnode
*dvp
, struct m_vnode
**vpp
, char *name
, int nlen
,
2021 char *target
, mode_t mode
);
2026 struct m_buf
*getblkx(struct m_vnode
*vp
, off_t loffset
, int size
, int blkflags
,
2028 int breadx(struct m_vnode
*vp
, off_t loffset
, int size
, struct m_buf
**bpp
);
2029 int bread_kvabio(struct m_vnode
*vp
, off_t loffset
, int size
, struct m_buf
**bpp
);
2030 void bqrelse(struct m_buf
*bp
);
2031 int bawrite(struct m_buf
*bp
);
2032 int uiomovebp(struct m_buf
*bp
, caddr_t cp
, size_t n
, struct uio
*uio
);
2035 * More complex inlines
2038 #define hammer2_xop_gdata(xop) _hammer2_xop_gdata((xop), __FILE__, __LINE__)
2041 const hammer2_media_data_t
*
2042 _hammer2_xop_gdata(hammer2_xop_head_t
*xop
, const char *file
, int line
)
2044 hammer2_chain_t
*focus
;
2047 focus
= xop
->cluster
.focus
;
2049 lockmgr(&focus
->diolk
, LK_SHARED
);
2050 if ((xop
->focus_dio
= focus
->dio
) != NULL
) {
2051 _hammer2_io_ref(xop
->focus_dio HAMMER2_IO_DEBUG_CALL
);
2052 hammer2_io_bkvasync(xop
->focus_dio
);
2055 lockmgr(&focus
->diolk
, LK_RELEASE
);
2063 #define hammer2_xop_pdata(xop) _hammer2_xop_pdata((xop), __FILE__, __LINE__)
2067 _hammer2_xop_pdata(hammer2_xop_head_t
*xop
, const char *file
, int line
)
2070 _hammer2_io_putblk(&xop
->focus_dio HAMMER2_IO_DEBUG_CALL
);
2075 hammer2_knote(struct m_vnode
*vp
, int flags
)
2078 KNOTE(&vp
->v_pollinfo
.vpi_kqinfo
.ki_note
, flags
);
2083 hammer2_iocom_init(hammer2_dev_t
*hmp
)
2089 hammer2_iocom_uninit(hammer2_dev_t
*hmp
)
2093 //#endif /* !_KERNEL */
2094 #endif /* !_VFS_HAMMER2_HAMMER2_H_ */