2 * Copyright (c) 2007-2008 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $DragonFly: src/sys/vfs/hammer/hammer.h,v 1.124 2008/07/31 04:42:04 dillon Exp $
37 * This header file contains structures used internally by the HAMMERFS
38 * implementation. See hammer_disk.h for on-disk structures.
41 #include <sys/param.h>
42 #include <sys/types.h>
43 #include <sys/kernel.h>
45 #include <sys/systm.h>
47 #include <sys/malloc.h>
48 #include <sys/mount.h>
49 #include <sys/mountctl.h>
50 #include <sys/vnode.h>
53 #include <sys/globaldata.h>
54 #include <sys/lockf.h>
56 #include <sys/queue.h>
58 #include <sys/globaldata.h>
61 #include <sys/signal2.h>
62 #include "hammer_disk.h"
63 #include "hammer_mount.h"
64 #include "hammer_ioctl.h"
66 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
68 MALLOC_DECLARE(M_HAMMER
);
69 MALLOC_DECLARE(M_HAMMER_INO
);
74 #if !defined(KTR_HAMMER)
75 #define KTR_HAMMER KTR_ALL
77 KTR_INFO_MASTER_EXTERN(hammer
);
85 * Key structure used for custom RB tree inode lookups. This prototypes
86 * the function hammer_ino_rb_tree_RB_LOOKUP_INFO(root, info).
88 typedef struct hammer_inode_info
{
89 int64_t obj_id
; /* (key) object identifier */
90 hammer_tid_t obj_asof
; /* (key) snapshot transid or 0 */
91 u_int32_t obj_localization
; /* (key) pseudo-fs */
93 struct hammer_btree_leaf_elm
*leaf
;
95 } *hammer_inode_info_t
;
97 typedef enum hammer_transaction_type
{
101 } hammer_transaction_type_t
;
104 * HAMMER Transaction tracking
106 struct hammer_transaction
{
107 hammer_transaction_type_t type
;
108 struct hammer_mount
*hmp
;
113 struct hammer_volume
*rootvol
;
116 typedef struct hammer_transaction
*hammer_transaction_t
;
122 int refs
; /* active references delay writes */
123 int lockcount
; /* lock count for exclusive/shared access */
125 int exwanted
; /* number of threads waiting for ex lock */
126 struct thread
*locktd
;
130 hammer_islocked(struct hammer_lock
*lock
)
132 return(lock
->lockcount
!= 0);
136 hammer_isactive(struct hammer_lock
*lock
)
138 return(lock
->refs
!= 0);
142 hammer_islastref(struct hammer_lock
*lock
)
144 return(lock
->refs
== 1);
148 * Return if we specifically own the lock exclusively.
151 hammer_lock_excl_owned(struct hammer_lock
*lock
, thread_t td
)
153 if (lock
->lockcount
> 0 && lock
->locktd
== td
)
159 * Flush state, used by various structures
161 typedef enum hammer_inode_state
{
165 } hammer_inode_state_t
;
167 TAILQ_HEAD(hammer_record_list
, hammer_record
);
170 * Pseudo-filesystem extended data tracking
172 struct hammer_pfs_rb_tree
;
173 struct hammer_pseudofs_inmem
;
174 RB_HEAD(hammer_pfs_rb_tree
, hammer_pseudofs_inmem
);
175 RB_PROTOTYPE2(hammer_pfs_rb_tree
, hammer_pseudofs_inmem
, rb_node
,
176 hammer_pfs_rb_compare
, u_int32_t
);
178 struct hammer_pseudofs_inmem
{
179 RB_ENTRY(hammer_pseudofs_inmem
) rb_node
;
180 struct hammer_lock lock
;
181 u_int32_t localization
;
182 hammer_tid_t create_tid
;
185 struct hammer_pseudofs_data pfsd
;
188 typedef struct hammer_pseudofs_inmem
*hammer_pseudofs_inmem_t
;
190 #define HAMMER_PFSM_DELETED 0x0001
193 * Cache object ids. A fixed number of objid cache structures are
194 * created to reserve object id's for newly created files in multiples
195 * of 100,000, localized to a particular directory, and recycled as
196 * needed. This allows parallel create operations in different
197 * directories to retain fairly localized object ids which in turn
198 * improves reblocking performance and layout.
200 #define OBJID_CACHE_SIZE 1024
201 #define OBJID_CACHE_BULK 100000
203 typedef struct hammer_objid_cache
{
204 TAILQ_ENTRY(hammer_objid_cache
) entry
;
205 struct hammer_inode
*dip
;
206 hammer_tid_t next_tid
;
208 } *hammer_objid_cache_t
;
211 * Associate an inode with a B-Tree node to cache search start positions
213 typedef struct hammer_node_cache
{
214 TAILQ_ENTRY(hammer_node_cache
) entry
;
215 struct hammer_node
*node
;
216 struct hammer_inode
*ip
;
217 } *hammer_node_cache_t
;
219 TAILQ_HEAD(hammer_node_cache_list
, hammer_node_cache
);
222 * Structure used to organize flush groups. Flush groups must be
223 * organized into chunks in order to avoid blowing out the UNDO FIFO.
224 * Without this a 'sync' could end up flushing 50,000 inodes in a single
227 struct hammer_flush_group
{
228 TAILQ_ENTRY(hammer_flush_group
) flush_entry
;
229 TAILQ_HEAD(, hammer_inode
) flush_list
;
230 int inode_count
; /* inode load */
231 int total_count
; /* record load */
232 int running
; /* group is running */
237 typedef struct hammer_flush_group
*hammer_flush_group_t
;
239 TAILQ_HEAD(hammer_flush_group_list
, hammer_flush_group
);
242 * Structure used to represent an inode in-memory.
244 * The record and data associated with an inode may be out of sync with
245 * the disk (xDIRTY flags), or not even on the disk at all (ONDISK flag
248 * An inode may also hold a cache of unsynchronized records, used for
249 * database and directories only. Unsynchronized regular file data is
250 * stored in the buffer cache.
252 * NOTE: A file which is created and destroyed within the initial
253 * synchronization period can wind up not doing any disk I/O at all.
255 * Finally, an inode may cache numerous disk-referencing B-Tree cursors.
257 struct hammer_ino_rb_tree
;
259 RB_HEAD(hammer_ino_rb_tree
, hammer_inode
);
260 RB_PROTOTYPEX(hammer_ino_rb_tree
, INFO
, hammer_inode
, rb_node
,
261 hammer_ino_rb_compare
, hammer_inode_info_t
);
263 struct hammer_rec_rb_tree
;
264 struct hammer_record
;
265 RB_HEAD(hammer_rec_rb_tree
, hammer_record
);
266 RB_PROTOTYPEX(hammer_rec_rb_tree
, INFO
, hammer_record
, rb_node
,
267 hammer_rec_rb_compare
, hammer_btree_leaf_elm_t
);
269 TAILQ_HEAD(hammer_node_list
, hammer_node
);
271 struct hammer_inode
{
272 RB_ENTRY(hammer_inode
) rb_node
;
273 hammer_inode_state_t flush_state
;
274 hammer_flush_group_t flush_group
;
275 TAILQ_ENTRY(hammer_inode
) flush_entry
;
276 struct hammer_record_list target_list
; /* target of dependant recs */
277 int64_t obj_id
; /* (key) object identifier */
278 hammer_tid_t obj_asof
; /* (key) snapshot or 0 */
279 u_int32_t obj_localization
; /* (key) pseudo-fs */
280 struct hammer_mount
*hmp
;
281 hammer_objid_cache_t objid_cache
;
283 int error
; /* flush error */
284 int cursor_ip_refs
; /* sanity */
287 hammer_pseudofs_inmem_t pfsm
;
288 struct lockf advlock
;
289 struct hammer_lock lock
; /* sync copy interlock */
291 struct hammer_btree_leaf_elm ino_leaf
; /* in-memory cache */
292 struct hammer_inode_data ino_data
; /* in-memory cache */
293 struct hammer_rec_rb_tree rec_tree
; /* in-memory cache */
294 struct hammer_node_cache cache
[2]; /* search initiate cache */
297 * When a demark is created to synchronize an inode to
298 * disk, certain fields are copied so the front-end VOPs
299 * can continue to run in parallel with the synchronization
300 * occuring in the background.
302 int sync_flags
; /* to-sync flags cache */
303 off_t sync_trunc_off
; /* to-sync truncation */
304 off_t save_trunc_off
; /* write optimization */
305 struct hammer_btree_leaf_elm sync_ino_leaf
; /* to-sync cache */
306 struct hammer_inode_data sync_ino_data
; /* to-sync cache */
309 typedef struct hammer_inode
*hammer_inode_t
;
311 #define VTOI(vp) ((struct hammer_inode *)(vp)->v_data)
313 #define HAMMER_INODE_DDIRTY 0x0001 /* in-memory ino_data is dirty */
314 /* (not including atime/mtime) */
315 #define HAMMER_INODE_RSV_INODES 0x0002 /* hmp->rsv_inodes bumped */
316 #define HAMMER_INODE_CONN_DOWN 0x0004 /* include in downward recursion */
317 #define HAMMER_INODE_XDIRTY 0x0008 /* in-memory records */
318 #define HAMMER_INODE_ONDISK 0x0010 /* inode is on-disk (else not yet) */
319 #define HAMMER_INODE_FLUSH 0x0020 /* flush on last ref */
320 #define HAMMER_INODE_DELETED 0x0080 /* inode delete (backend) */
321 #define HAMMER_INODE_DELONDISK 0x0100 /* delete synchronized to disk */
322 #define HAMMER_INODE_RO 0x0200 /* read-only (because of as-of) */
323 #define HAMMER_INODE_VHELD 0x0400 /* vnode held on sync */
324 #define HAMMER_INODE_DONDISK 0x0800 /* data records may be on disk */
325 #define HAMMER_INODE_BUFS 0x1000 /* dirty high level bps present */
326 #define HAMMER_INODE_REFLUSH 0x2000 /* pipelined flush during flush */
327 #define HAMMER_INODE_RECLAIM 0x4000 /* trying to reclaim */
328 #define HAMMER_INODE_FLUSHW 0x8000 /* Someone waiting for flush */
330 #define HAMMER_INODE_TRUNCATED 0x00010000
331 #define HAMMER_INODE_DELETING 0x00020000 /* inode delete request (frontend)*/
332 #define HAMMER_INODE_RESIGNAL 0x00040000 /* re-signal on re-flush */
333 #define HAMMER_INODE_ATIME 0x00100000 /* in-memory atime modified */
334 #define HAMMER_INODE_MTIME 0x00200000 /* in-memory mtime modified */
335 #define HAMMER_INODE_WOULDBLOCK 0x00400000 /* re-issue to new flush group */
337 #define HAMMER_INODE_MODMASK (HAMMER_INODE_DDIRTY| \
338 HAMMER_INODE_XDIRTY|HAMMER_INODE_BUFS| \
339 HAMMER_INODE_ATIME|HAMMER_INODE_MTIME| \
340 HAMMER_INODE_TRUNCATED|HAMMER_INODE_DELETING)
342 #define HAMMER_INODE_MODMASK_NOXDIRTY \
343 (HAMMER_INODE_MODMASK & ~HAMMER_INODE_XDIRTY)
345 #define HAMMER_FLUSH_GROUP_SIZE 64
347 #define HAMMER_FLUSH_SIGNAL 0x0001
348 #define HAMMER_FLUSH_RECURSION 0x0002
351 * Used by the inode reclaim code to pipeline reclaims and avoid
352 * blowing out kernel memory or letting the flusher get too far
355 struct hammer_reclaim
{
356 TAILQ_ENTRY(hammer_reclaim
) entry
;
360 #define HAMMER_RECLAIM_FLUSH 2000
361 #define HAMMER_RECLAIM_WAIT 4000
364 * Structure used to represent an unsynchronized record in-memory. These
365 * records typically represent directory entries. Only non-historical
366 * records are kept in-memory.
368 * Records are organized as a per-inode RB-Tree. If the inode is not
369 * on disk then neither are any records and the in-memory record tree
370 * represents the entire contents of the inode. If the inode is on disk
371 * then the on-disk B-Tree is scanned in parallel with the in-memory
372 * RB-Tree to synthesize the current state of the file.
374 * Records are also used to enforce the ordering of directory create/delete
375 * operations. A new inode will not be flushed to disk unless its related
376 * directory entry is also being flushed at the same time. A directory entry
377 * will not be removed unless its related inode is also being removed at the
380 typedef enum hammer_record_type
{
381 HAMMER_MEM_RECORD_GENERAL
, /* misc record */
382 HAMMER_MEM_RECORD_INODE
, /* inode record */
383 HAMMER_MEM_RECORD_ADD
, /* positive memory cache record */
384 HAMMER_MEM_RECORD_DEL
, /* negative delete-on-disk record */
385 HAMMER_MEM_RECORD_DATA
/* bulk-data record w/on-disk ref */
386 } hammer_record_type_t
;
388 struct hammer_record
{
389 RB_ENTRY(hammer_record
) rb_node
;
390 TAILQ_ENTRY(hammer_record
) target_entry
;
391 hammer_inode_state_t flush_state
;
392 hammer_flush_group_t flush_group
;
393 hammer_record_type_t type
;
394 struct hammer_lock lock
;
395 struct hammer_reserve
*resv
;
396 struct hammer_inode
*ip
;
397 struct hammer_inode
*target_ip
;
398 struct hammer_btree_leaf_elm leaf
;
399 union hammer_data_ondisk
*data
;
403 typedef struct hammer_record
*hammer_record_t
;
406 * Record flags. Note that FE can only be set by the frontend if the
407 * record has not been interlocked by the backend w/ BE.
409 #define HAMMER_RECF_ALLOCDATA 0x0001
410 #define HAMMER_RECF_ONRBTREE 0x0002
411 #define HAMMER_RECF_DELETED_FE 0x0004 /* deleted (frontend) */
412 #define HAMMER_RECF_DELETED_BE 0x0008 /* deleted (backend) */
413 #define HAMMER_RECF_COMMITTED 0x0010 /* committed to the B-Tree */
414 #define HAMMER_RECF_INTERLOCK_BE 0x0020 /* backend interlock */
415 #define HAMMER_RECF_WANTED 0x0040 /* wanted by the frontend */
416 #define HAMMER_RECF_CONVERT_DELETE 0x0100 /* special case */
417 #define HAMMER_RECF_DIRECT_IO 0x0200 /* related direct I/O running*/
418 #define HAMMER_RECF_DIRECT_WAIT 0x0400 /* related direct I/O running*/
421 * hammer_delete_at_cursor() flags
423 #define HAMMER_DELETE_ADJUST 0x0001
424 #define HAMMER_DELETE_DESTROY 0x0002
427 * In-memory structures representing on-disk structures.
429 struct hammer_volume
;
430 struct hammer_buffer
;
433 struct hammer_reserve
;
435 RB_HEAD(hammer_vol_rb_tree
, hammer_volume
);
436 RB_HEAD(hammer_buf_rb_tree
, hammer_buffer
);
437 RB_HEAD(hammer_nod_rb_tree
, hammer_node
);
438 RB_HEAD(hammer_und_rb_tree
, hammer_undo
);
439 RB_HEAD(hammer_res_rb_tree
, hammer_reserve
);
441 RB_PROTOTYPE2(hammer_vol_rb_tree
, hammer_volume
, rb_node
,
442 hammer_vol_rb_compare
, int32_t);
443 RB_PROTOTYPE2(hammer_buf_rb_tree
, hammer_buffer
, rb_node
,
444 hammer_buf_rb_compare
, hammer_off_t
);
445 RB_PROTOTYPE2(hammer_nod_rb_tree
, hammer_node
, rb_node
,
446 hammer_nod_rb_compare
, hammer_off_t
);
447 RB_PROTOTYPE2(hammer_und_rb_tree
, hammer_undo
, rb_node
,
448 hammer_und_rb_compare
, hammer_off_t
);
449 RB_PROTOTYPE2(hammer_res_rb_tree
, hammer_reserve
, rb_node
,
450 hammer_res_rb_compare
, hammer_off_t
);
453 * IO management - embedded at the head of various in-memory structures
455 * VOLUME - hammer_volume containing meta-data
456 * META_BUFFER - hammer_buffer containing meta-data
457 * DATA_BUFFER - hammer_buffer containing pure-data
459 * Dirty volume headers and dirty meta-data buffers are locked until the
460 * flusher can sequence them out. Dirty pure-data buffers can be written.
461 * Clean buffers can be passively released.
463 typedef enum hammer_io_type
{
464 HAMMER_STRUCTURE_VOLUME
,
465 HAMMER_STRUCTURE_META_BUFFER
,
466 HAMMER_STRUCTURE_UNDO_BUFFER
,
467 HAMMER_STRUCTURE_DATA_BUFFER
470 union hammer_io_structure
;
474 LIST_ENTRY(worklist
) node
;
477 TAILQ_HEAD(hammer_io_list
, hammer_io
);
478 typedef struct hammer_io_list
*hammer_io_list_t
;
481 struct worklist worklist
;
482 struct hammer_lock lock
;
483 enum hammer_io_type type
;
484 struct hammer_mount
*hmp
;
485 TAILQ_ENTRY(hammer_io
) mod_entry
; /* list entry if modified */
486 hammer_io_list_t mod_list
;
488 int64_t offset
; /* zone-2 offset */
489 int bytes
; /* buffer cache buffer size */
490 int loading
; /* loading/unloading interlock */
493 u_int modified
: 1; /* bp's data was modified */
494 u_int released
: 1; /* bp released (w/ B_LOCKED set) */
495 u_int running
: 1; /* bp write IO in progress */
496 u_int waiting
: 1; /* someone is waiting on us */
497 u_int validated
: 1; /* ondisk has been validated */
498 u_int waitdep
: 1; /* flush waits for dependancies */
499 u_int recovered
: 1; /* has recovery ref */
500 u_int waitmod
: 1; /* waiting for modify_refs */
501 u_int reclaim
: 1; /* reclaim requested */
502 u_int gencrc
: 1; /* crc needs to be generated */
503 u_int ioerror
: 1; /* abort on io-error */
506 typedef struct hammer_io
*hammer_io_t
;
508 #define HAMMER_CLUSTER_SIZE (64 * 1024)
509 #if HAMMER_CLUSTER_SIZE > MAXBSIZE
510 #undef HAMMER_CLUSTER_SIZE
511 #define HAMMER_CLUSTER_SIZE MAXBSIZE
513 #define HAMMER_CLUSTER_BUFS (HAMMER_CLUSTER_SIZE / HAMMER_BUFSIZE)
516 * In-memory volume representing on-disk buffer
518 struct hammer_volume
{
520 RB_ENTRY(hammer_volume
) rb_node
;
521 struct hammer_volume_ondisk
*ondisk
;
523 int64_t nblocks
; /* note: special calculation for statfs */
524 int64_t buffer_base
; /* base offset of buffer 0 */
525 hammer_off_t maxbuf_off
; /* Maximum buffer offset (zone-2) */
526 hammer_off_t maxraw_off
; /* Maximum raw offset for device */
532 typedef struct hammer_volume
*hammer_volume_t
;
535 * In-memory buffer (other then volume, super-cluster, or cluster),
536 * representing an on-disk buffer.
538 struct hammer_buffer
{
540 RB_ENTRY(hammer_buffer
) rb_node
;
542 struct hammer_volume
*volume
;
543 hammer_off_t zoneX_offset
;
544 hammer_off_t zone2_offset
;
545 struct hammer_reserve
*resv
;
546 struct hammer_node_list clist
;
549 typedef struct hammer_buffer
*hammer_buffer_t
;
552 * In-memory B-Tree node, representing an on-disk B-Tree node.
554 * This is a hang-on structure which is backed by a hammer_buffer,
555 * indexed by a hammer_cluster, and used for fine-grained locking of
556 * B-Tree nodes in order to properly control lock ordering. A hammer_buffer
557 * can contain multiple nodes representing wildly disassociated portions
558 * of the B-Tree so locking cannot be done on a buffer-by-buffer basis.
560 * This structure uses a cluster-relative index to reduce the number
561 * of layers required to access it, and also because all on-disk B-Tree
562 * references are cluster-relative offsets.
565 struct hammer_lock lock
; /* node-by-node lock */
566 TAILQ_ENTRY(hammer_node
) entry
; /* per-buffer linkage */
567 RB_ENTRY(hammer_node
) rb_node
; /* per-cluster linkage */
568 hammer_off_t node_offset
; /* full offset spec */
569 struct hammer_mount
*hmp
;
570 struct hammer_buffer
*buffer
; /* backing buffer */
571 hammer_node_ondisk_t ondisk
; /* ptr to on-disk structure */
572 TAILQ_HEAD(, hammer_cursor
) cursor_list
; /* deadlock recovery */
573 struct hammer_node_cache_list cache_list
; /* passive caches */
575 int loading
; /* load interlock */
578 #define HAMMER_NODE_DELETED 0x0001
579 #define HAMMER_NODE_FLUSH 0x0002
580 #define HAMMER_NODE_CRCGOOD 0x0004
581 #define HAMMER_NODE_NEEDSCRC 0x0008
582 #define HAMMER_NODE_NEEDSMIRROR 0x0010
584 typedef struct hammer_node
*hammer_node_t
;
587 * List of locked nodes.
589 struct hammer_node_locklist
{
590 struct hammer_node_locklist
*next
;
594 typedef struct hammer_node_locklist
*hammer_node_locklist_t
;
598 * Common I/O management structure - embedded in in-memory structures
599 * which are backed by filesystem buffers.
601 union hammer_io_structure
{
603 struct hammer_volume volume
;
604 struct hammer_buffer buffer
;
607 typedef union hammer_io_structure
*hammer_io_structure_t
;
610 * The reserve structure prevents the blockmap from allocating
611 * out of a reserved bigblock. Such reservations are used by
612 * the direct-write mechanism.
614 * The structure is also used to hold off on reallocations of
615 * big blocks from the freemap until flush dependancies have
618 struct hammer_reserve
{
619 RB_ENTRY(hammer_reserve
) rb_node
;
620 TAILQ_ENTRY(hammer_reserve
) delay_entry
;
627 hammer_off_t zone_offset
;
630 typedef struct hammer_reserve
*hammer_reserve_t
;
632 #define HAMMER_RESF_ONDELAY 0x0001
634 #include "hammer_cursor.h"
637 * The undo structure tracks recent undos to avoid laying down duplicate
638 * undos within a flush group, saving us a significant amount of overhead.
640 * This is strictly a heuristic.
642 #define HAMMER_MAX_UNDOS 1024
643 #define HAMMER_MAX_FLUSHERS 4
646 RB_ENTRY(hammer_undo
) rb_node
;
647 TAILQ_ENTRY(hammer_undo
) lru_entry
;
652 typedef struct hammer_undo
*hammer_undo_t
;
654 struct hammer_flusher_info
;
655 TAILQ_HEAD(hammer_flusher_info_list
, hammer_flusher_info
);
657 struct hammer_flusher
{
658 int signal
; /* flusher thread sequencer */
659 int act
; /* currently active flush group */
660 int done
; /* set to act when complete */
661 int next
; /* next flush group */
662 int group_lock
; /* lock sequencing of the next flush */
663 int exiting
; /* request master exit */
664 thread_t td
; /* master flusher thread */
665 hammer_tid_t tid
; /* last flushed transaction id */
666 int finalize_want
; /* serialize finalization */
667 struct hammer_lock finalize_lock
; /* serialize finalization */
668 struct hammer_transaction trans
; /* shared transaction */
669 struct hammer_flusher_info_list run_list
;
670 struct hammer_flusher_info_list ready_list
;
674 * Internal hammer mount data structure
676 struct hammer_mount
{
678 /*struct vnode *rootvp;*/
679 struct hammer_ino_rb_tree rb_inos_root
;
680 struct hammer_vol_rb_tree rb_vols_root
;
681 struct hammer_nod_rb_tree rb_nods_root
;
682 struct hammer_und_rb_tree rb_undo_root
;
683 struct hammer_res_rb_tree rb_resv_root
;
684 struct hammer_buf_rb_tree rb_bufs_root
;
685 struct hammer_pfs_rb_tree rb_pfsm_root
;
686 struct hammer_volume
*rootvol
;
687 struct hammer_base_elm root_btree_beg
;
688 struct hammer_base_elm root_btree_end
;
689 int flags
; /* HAMMER_MOUNT_xxx flags */
694 int master_id
; /* -1 or 0-15 - clustering and mirroring */
695 int rsv_inodes
; /* reserved space due to dirty inodes */
696 int64_t rsv_databytes
; /* reserved space due to record data */
697 int rsv_recs
; /* reserved space due to dirty records */
698 int rsv_fromdelay
; /* bigblocks reserved due to flush delay */
699 int undo_rec_limit
; /* based on size of undo area */
701 int count_newrecords
;
703 int inode_reclaims
; /* inodes pending reclaim by flusher */
704 int count_inodes
; /* total number of inodes */
705 int count_iqueued
; /* inodes queued to flusher */
707 struct hammer_flusher flusher
;
709 u_int check_interrupt
;
711 struct hammer_io_list volu_list
; /* dirty undo buffers */
712 struct hammer_io_list undo_list
; /* dirty undo buffers */
713 struct hammer_io_list data_list
; /* dirty data buffers */
714 struct hammer_io_list alt_data_list
; /* dirty data buffers */
715 struct hammer_io_list meta_list
; /* dirty meta bufs */
716 struct hammer_io_list lose_list
; /* loose buffers */
717 int locked_dirty_space
; /* meta/volu count */
718 int io_running_space
;
719 int objid_cache_count
;
720 int error
; /* critical I/O error */
721 struct krate krate
; /* rate limited kprintf */
722 hammer_tid_t asof
; /* snapshot mount */
723 hammer_tid_t next_tid
;
724 hammer_tid_t flush_tid1
; /* flusher tid sequencing */
725 hammer_tid_t flush_tid2
; /* flusher tid sequencing */
726 int64_t copy_stat_freebigblocks
; /* number of free bigblocks */
728 u_int32_t namekey_iterator
;
729 struct netexport export
;
730 struct hammer_lock sync_lock
;
731 struct hammer_lock free_lock
;
732 struct hammer_lock undo_lock
;
733 struct hammer_lock blkmap_lock
;
734 struct hammer_blockmap blockmap
[HAMMER_MAX_ZONES
];
735 struct hammer_undo undos
[HAMMER_MAX_UNDOS
];
737 TAILQ_HEAD(, hammer_undo
) undo_lru_list
;
738 TAILQ_HEAD(, hammer_reserve
) delay_list
;
739 struct hammer_flush_group_list flush_group_list
;
740 hammer_flush_group_t next_flush_group
;
741 TAILQ_HEAD(, hammer_objid_cache
) objid_cache_list
;
742 TAILQ_HEAD(, hammer_reclaim
) reclaim_list
;
745 typedef struct hammer_mount
*hammer_mount_t
;
747 #define HAMMER_MOUNT_CRITICAL_ERROR 0x0001
749 struct hammer_sync_info
{
757 * checkspace slop (8MB chunks), higher numbers are more conservative.
759 #define HAMMER_CHKSPC_REBLOCK 25
760 #define HAMMER_CHKSPC_MIRROR 20
761 #define HAMMER_CHKSPC_WRITE 20
762 #define HAMMER_CHKSPC_CREATE 20
763 #define HAMMER_CHKSPC_REMOVE 10
764 #define HAMMER_CHKSPC_EMERGENCY 0
768 extern struct vop_ops hammer_vnode_vops
;
769 extern struct vop_ops hammer_spec_vops
;
770 extern struct vop_ops hammer_fifo_vops
;
771 extern struct bio_ops hammer_bioops
;
773 extern int hammer_debug_io
;
774 extern int hammer_debug_general
;
775 extern int hammer_debug_debug
;
776 extern int hammer_debug_inode
;
777 extern int hammer_debug_locks
;
778 extern int hammer_debug_btree
;
779 extern int hammer_debug_tid
;
780 extern int hammer_debug_recover
;
781 extern int hammer_debug_recover_faults
;
782 extern int hammer_cluster_enable
;
783 extern int hammer_count_fsyncs
;
784 extern int hammer_count_inodes
;
785 extern int hammer_count_iqueued
;
786 extern int hammer_count_reclaiming
;
787 extern int hammer_count_records
;
788 extern int hammer_count_record_datas
;
789 extern int hammer_count_volumes
;
790 extern int hammer_count_buffers
;
791 extern int hammer_count_nodes
;
792 extern int64_t hammer_count_extra_space_used
;
793 extern int64_t hammer_stats_btree_lookups
;
794 extern int64_t hammer_stats_btree_searches
;
795 extern int64_t hammer_stats_btree_inserts
;
796 extern int64_t hammer_stats_btree_deletes
;
797 extern int64_t hammer_stats_btree_elements
;
798 extern int64_t hammer_stats_btree_splits
;
799 extern int64_t hammer_stats_btree_iterations
;
800 extern int64_t hammer_stats_record_iterations
;
801 extern int64_t hammer_stats_file_read
;
802 extern int64_t hammer_stats_file_write
;
803 extern int64_t hammer_stats_file_iopsr
;
804 extern int64_t hammer_stats_file_iopsw
;
805 extern int64_t hammer_stats_disk_read
;
806 extern int64_t hammer_stats_disk_write
;
807 extern int64_t hammer_stats_inode_flushes
;
808 extern int64_t hammer_stats_commits
;
809 extern int hammer_count_dirtybufspace
;
810 extern int hammer_count_refedbufs
;
811 extern int hammer_count_reservations
;
812 extern int hammer_count_io_running_read
;
813 extern int hammer_count_io_running_write
;
814 extern int hammer_count_io_locked
;
815 extern int hammer_limit_dirtybufspace
;
816 extern int hammer_limit_iqueued
;
817 extern int hammer_limit_recs
;
818 extern int hammer_bio_count
;
819 extern int hammer_verify_zone
;
820 extern int hammer_verify_data
;
821 extern int hammer_write_mode
;
822 extern int64_t hammer_contention_count
;
824 void hammer_critical_error(hammer_mount_t hmp
, hammer_inode_t ip
,
825 int error
, const char *msg
);
826 int hammer_vop_inactive(struct vop_inactive_args
*);
827 int hammer_vop_reclaim(struct vop_reclaim_args
*);
828 int hammer_get_vnode(struct hammer_inode
*ip
, struct vnode
**vpp
);
829 struct hammer_inode
*hammer_get_inode(hammer_transaction_t trans
,
830 hammer_inode_t dip
, int64_t obj_id
,
831 hammer_tid_t asof
, u_int32_t localization
,
832 int flags
, int *errorp
);
833 void hammer_scan_inode_snapshots(hammer_mount_t hmp
,
834 hammer_inode_info_t iinfo
,
835 int (*callback
)(hammer_inode_t ip
, void *data
),
837 void hammer_put_inode(struct hammer_inode
*ip
);
838 void hammer_put_inode_ref(struct hammer_inode
*ip
);
839 void hammer_inode_waitreclaims(hammer_mount_t hmp
);
841 int hammer_unload_volume(hammer_volume_t volume
, void *data __unused
);
842 int hammer_adjust_volume_mode(hammer_volume_t volume
, void *data __unused
);
844 int hammer_unload_buffer(hammer_buffer_t buffer
, void *data __unused
);
845 int hammer_install_volume(hammer_mount_t hmp
, const char *volname
,
846 struct vnode
*devvp
);
847 int hammer_mountcheck_volumes(hammer_mount_t hmp
);
849 int hammer_ip_lookup(hammer_cursor_t cursor
);
850 int hammer_ip_first(hammer_cursor_t cursor
);
851 int hammer_ip_next(hammer_cursor_t cursor
);
852 int hammer_ip_resolve_data(hammer_cursor_t cursor
);
853 int hammer_ip_delete_record(hammer_cursor_t cursor
, hammer_inode_t ip
,
855 int hammer_delete_at_cursor(hammer_cursor_t cursor
, int delete_flags
,
856 hammer_tid_t delete_tid
, u_int32_t delete_ts
,
857 int track
, int64_t *stat_bytes
);
858 int hammer_ip_check_directory_empty(hammer_transaction_t trans
,
860 int hammer_sync_hmp(hammer_mount_t hmp
, int waitfor
);
861 int hammer_queue_inodes_flusher(hammer_mount_t hmp
, int waitfor
);
864 hammer_alloc_mem_record(hammer_inode_t ip
, int data_len
);
865 void hammer_flush_record_done(hammer_record_t record
, int error
);
866 void hammer_wait_mem_record_ident(hammer_record_t record
, const char *ident
);
867 void hammer_rel_mem_record(hammer_record_t record
);
869 int hammer_cursor_up(hammer_cursor_t cursor
);
870 int hammer_cursor_up_locked(hammer_cursor_t cursor
);
871 int hammer_cursor_down(hammer_cursor_t cursor
);
872 int hammer_cursor_upgrade(hammer_cursor_t cursor
);
873 int hammer_cursor_upgrade_node(hammer_cursor_t cursor
);
874 void hammer_cursor_downgrade(hammer_cursor_t cursor
);
875 int hammer_cursor_seek(hammer_cursor_t cursor
, hammer_node_t node
,
877 void hammer_lock_ex_ident(struct hammer_lock
*lock
, const char *ident
);
878 int hammer_lock_ex_try(struct hammer_lock
*lock
);
879 void hammer_lock_sh(struct hammer_lock
*lock
);
880 int hammer_lock_sh_try(struct hammer_lock
*lock
);
881 int hammer_lock_upgrade(struct hammer_lock
*lock
);
882 void hammer_lock_downgrade(struct hammer_lock
*lock
);
883 int hammer_lock_status(struct hammer_lock
*lock
);
884 void hammer_unlock(struct hammer_lock
*lock
);
885 void hammer_ref(struct hammer_lock
*lock
);
886 void hammer_unref(struct hammer_lock
*lock
);
888 void hammer_sync_lock_ex(hammer_transaction_t trans
);
889 void hammer_sync_lock_sh(hammer_transaction_t trans
);
890 int hammer_sync_lock_sh_try(hammer_transaction_t trans
);
891 void hammer_sync_unlock(hammer_transaction_t trans
);
893 u_int32_t
hammer_to_unix_xid(uuid_t
*uuid
);
894 void hammer_guid_to_uuid(uuid_t
*uuid
, u_int32_t guid
);
895 void hammer_time_to_timespec(u_int64_t xtime
, struct timespec
*ts
);
896 u_int64_t
hammer_timespec_to_time(struct timespec
*ts
);
897 hammer_tid_t
hammer_str_to_tid(const char *str
, int *ispfs
,
898 u_int32_t
*localizationp
);
899 hammer_tid_t
hammer_alloc_objid(hammer_mount_t hmp
, hammer_inode_t dip
);
900 void hammer_clear_objid(hammer_inode_t dip
);
901 void hammer_destroy_objid_cache(hammer_mount_t hmp
);
903 int hammer_enter_undo_history(hammer_mount_t hmp
, hammer_off_t offset
,
905 void hammer_clear_undo_history(hammer_mount_t hmp
);
906 enum vtype
hammer_get_vnode_type(u_int8_t obj_type
);
907 int hammer_get_dtype(u_int8_t obj_type
);
908 u_int8_t
hammer_get_obj_type(enum vtype vtype
);
909 int64_t hammer_directory_namekey(const void *name
, int len
);
910 int hammer_nohistory(hammer_inode_t ip
);
912 int hammer_init_cursor(hammer_transaction_t trans
, hammer_cursor_t cursor
,
913 hammer_node_cache_t cache
, hammer_inode_t ip
);
914 void hammer_normalize_cursor(hammer_cursor_t cursor
);
915 void hammer_done_cursor(hammer_cursor_t cursor
);
916 int hammer_recover_cursor(hammer_cursor_t cursor
);
917 void hammer_unlock_cursor(hammer_cursor_t cursor
, int also_ip
);
918 int hammer_lock_cursor(hammer_cursor_t cursor
, int also_ip
);
919 hammer_cursor_t
hammer_push_cursor(hammer_cursor_t ocursor
);
920 void hammer_pop_cursor(hammer_cursor_t ocursor
, hammer_cursor_t ncursor
);
922 void hammer_cursor_replaced_node(hammer_node_t onode
, hammer_node_t nnode
);
923 void hammer_cursor_removed_node(hammer_node_t onode
, hammer_node_t parent
,
925 void hammer_cursor_split_node(hammer_node_t onode
, hammer_node_t nnode
,
927 void hammer_cursor_inserted_element(hammer_node_t node
, int index
);
928 void hammer_cursor_deleted_element(hammer_node_t node
, int index
);
930 int hammer_btree_lookup(hammer_cursor_t cursor
);
931 int hammer_btree_first(hammer_cursor_t cursor
);
932 int hammer_btree_last(hammer_cursor_t cursor
);
933 int hammer_btree_extract(hammer_cursor_t cursor
, int flags
);
934 int hammer_btree_iterate(hammer_cursor_t cursor
);
935 int hammer_btree_iterate_reverse(hammer_cursor_t cursor
);
936 int hammer_btree_insert(hammer_cursor_t cursor
,
937 hammer_btree_leaf_elm_t elm
, int *doprop
);
938 int hammer_btree_delete(hammer_cursor_t cursor
);
939 void hammer_btree_do_propagation(hammer_cursor_t cursor
,
940 hammer_pseudofs_inmem_t pfsm
,
941 hammer_btree_leaf_elm_t leaf
);
942 int hammer_btree_cmp(hammer_base_elm_t key1
, hammer_base_elm_t key2
);
943 int hammer_btree_chkts(hammer_tid_t ts
, hammer_base_elm_t key
);
944 int hammer_btree_correct_rhb(hammer_cursor_t cursor
, hammer_tid_t tid
);
945 int hammer_btree_correct_lhb(hammer_cursor_t cursor
, hammer_tid_t tid
);
947 int btree_set_parent(hammer_transaction_t trans
, hammer_node_t node
,
948 hammer_btree_elm_t elm
);
949 int hammer_btree_lock_children(hammer_cursor_t cursor
,
950 struct hammer_node_locklist
**locklistp
);
951 void hammer_btree_unlock_children(struct hammer_node_locklist
**locklistp
);
952 int hammer_btree_search_node(hammer_base_elm_t elm
, hammer_node_ondisk_t node
);
953 hammer_node_t
hammer_btree_get_parent(hammer_node_t node
, int *parent_indexp
,
954 int *errorp
, int try_exclusive
);
956 void hammer_print_btree_node(hammer_node_ondisk_t ondisk
);
957 void hammer_print_btree_elm(hammer_btree_elm_t elm
, u_int8_t type
, int i
);
959 void *hammer_bread(struct hammer_mount
*hmp
, hammer_off_t off
,
960 int *errorp
, struct hammer_buffer
**bufferp
);
961 void *hammer_bnew(struct hammer_mount
*hmp
, hammer_off_t off
,
962 int *errorp
, struct hammer_buffer
**bufferp
);
963 void *hammer_bread_ext(struct hammer_mount
*hmp
, hammer_off_t off
, int bytes
,
964 int *errorp
, struct hammer_buffer
**bufferp
);
965 void *hammer_bnew_ext(struct hammer_mount
*hmp
, hammer_off_t off
, int bytes
,
966 int *errorp
, struct hammer_buffer
**bufferp
);
968 hammer_volume_t
hammer_get_root_volume(hammer_mount_t hmp
, int *errorp
);
970 hammer_volume_t
hammer_get_volume(hammer_mount_t hmp
,
971 int32_t vol_no
, int *errorp
);
972 hammer_buffer_t
hammer_get_buffer(hammer_mount_t hmp
, hammer_off_t buf_offset
,
973 int bytes
, int isnew
, int *errorp
);
974 void hammer_sync_buffers(hammer_mount_t hmp
,
975 hammer_off_t base_offset
, int bytes
);
976 void hammer_del_buffers(hammer_mount_t hmp
,
977 hammer_off_t base_offset
,
978 hammer_off_t zone2_offset
, int bytes
);
980 int hammer_ref_volume(hammer_volume_t volume
);
981 int hammer_ref_buffer(hammer_buffer_t buffer
);
982 void hammer_flush_buffer_nodes(hammer_buffer_t buffer
);
984 void hammer_rel_volume(hammer_volume_t volume
, int flush
);
985 void hammer_rel_buffer(hammer_buffer_t buffer
, int flush
);
987 int hammer_vfs_export(struct mount
*mp
, int op
,
988 const struct export_args
*export
);
989 hammer_node_t
hammer_get_node(hammer_mount_t hmp
, hammer_off_t node_offset
,
990 int isnew
, int *errorp
);
991 void hammer_ref_node(hammer_node_t node
);
992 hammer_node_t
hammer_ref_node_safe(struct hammer_mount
*hmp
,
993 hammer_node_cache_t cache
, int *errorp
);
994 void hammer_rel_node(hammer_node_t node
);
995 void hammer_delete_node(hammer_transaction_t trans
,
997 void hammer_cache_node(hammer_node_cache_t cache
,
999 void hammer_uncache_node(hammer_node_cache_t cache
);
1000 void hammer_flush_node(hammer_node_t node
);
1002 void hammer_dup_buffer(struct hammer_buffer
**bufferp
,
1003 struct hammer_buffer
*buffer
);
1004 hammer_node_t
hammer_alloc_btree(hammer_transaction_t trans
, int *errorp
);
1005 void *hammer_alloc_data(hammer_transaction_t trans
, int32_t data_len
,
1006 u_int16_t rec_type
, hammer_off_t
*data_offsetp
,
1007 struct hammer_buffer
**data_bufferp
, int *errorp
);
1009 int hammer_generate_undo(hammer_transaction_t trans
, hammer_io_t io
,
1010 hammer_off_t zone1_offset
, void *base
, int len
);
1012 void hammer_put_volume(struct hammer_volume
*volume
, int flush
);
1013 void hammer_put_buffer(struct hammer_buffer
*buffer
, int flush
);
1015 hammer_off_t
hammer_freemap_alloc(hammer_transaction_t trans
,
1016 hammer_off_t owner
, int *errorp
);
1017 void hammer_freemap_free(hammer_transaction_t trans
, hammer_off_t phys_offset
,
1018 hammer_off_t owner
, int *errorp
);
1019 int hammer_checkspace(hammer_mount_t hmp
, int slop
);
1020 hammer_off_t
hammer_blockmap_alloc(hammer_transaction_t trans
, int zone
,
1021 int bytes
, int *errorp
);
1022 hammer_reserve_t
hammer_blockmap_reserve(hammer_mount_t hmp
, int zone
,
1023 int bytes
, hammer_off_t
*zone_offp
, int *errorp
);
1024 void hammer_blockmap_reserve_undo(hammer_reserve_t resv
,
1025 hammer_off_t zone_offset
, int bytes
);
1026 void hammer_blockmap_reserve_complete(hammer_mount_t hmp
,
1027 hammer_reserve_t resv
);
1028 void hammer_reserve_clrdelay(hammer_mount_t hmp
, hammer_reserve_t resv
);
1029 void hammer_blockmap_free(hammer_transaction_t trans
,
1030 hammer_off_t bmap_off
, int bytes
);
1031 int hammer_blockmap_finalize(hammer_transaction_t trans
,
1032 hammer_off_t bmap_off
, int bytes
);
1033 int hammer_blockmap_getfree(hammer_mount_t hmp
, hammer_off_t bmap_off
,
1034 int *curp
, int *errorp
);
1035 hammer_off_t
hammer_blockmap_lookup(hammer_mount_t hmp
, hammer_off_t bmap_off
,
1037 hammer_off_t
hammer_undo_lookup(hammer_mount_t hmp
, hammer_off_t bmap_off
,
1039 int64_t hammer_undo_used(hammer_transaction_t trans
);
1040 int64_t hammer_undo_space(hammer_transaction_t trans
);
1041 int64_t hammer_undo_max(hammer_mount_t hmp
);
1043 void hammer_start_transaction(struct hammer_transaction
*trans
,
1044 struct hammer_mount
*hmp
);
1045 void hammer_simple_transaction(struct hammer_transaction
*trans
,
1046 struct hammer_mount
*hmp
);
1047 void hammer_start_transaction_fls(struct hammer_transaction
*trans
,
1048 struct hammer_mount
*hmp
);
1049 void hammer_done_transaction(struct hammer_transaction
*trans
);
1051 void hammer_modify_inode(hammer_inode_t ip
, int flags
);
1052 void hammer_flush_inode(hammer_inode_t ip
, int flags
);
1053 void hammer_flush_inode_done(hammer_inode_t ip
, int error
);
1054 void hammer_wait_inode(hammer_inode_t ip
);
1056 int hammer_create_inode(struct hammer_transaction
*trans
, struct vattr
*vap
,
1057 struct ucred
*cred
, struct hammer_inode
*dip
,
1058 hammer_pseudofs_inmem_t pfsm
,
1059 struct hammer_inode
**ipp
);
1060 void hammer_rel_inode(hammer_inode_t ip
, int flush
);
1061 int hammer_reload_inode(hammer_inode_t ip
, void *arg __unused
);
1062 int hammer_ino_rb_compare(hammer_inode_t ip1
, hammer_inode_t ip2
);
1063 int hammer_destroy_inode_callback(hammer_inode_t ip
, void *data __unused
);
1065 int hammer_sync_inode(hammer_transaction_t trans
, hammer_inode_t ip
);
1066 void hammer_test_inode(hammer_inode_t dip
);
1067 void hammer_inode_unloadable_check(hammer_inode_t ip
, int getvp
);
1069 int hammer_ip_add_directory(struct hammer_transaction
*trans
,
1070 hammer_inode_t dip
, const char *name
, int bytes
,
1071 hammer_inode_t nip
);
1072 int hammer_ip_del_directory(struct hammer_transaction
*trans
,
1073 hammer_cursor_t cursor
, hammer_inode_t dip
,
1075 hammer_record_t
hammer_ip_add_bulk(hammer_inode_t ip
, off_t file_offset
,
1076 void *data
, int bytes
, int *errorp
);
1077 int hammer_ip_frontend_trunc(struct hammer_inode
*ip
, off_t file_size
);
1078 int hammer_ip_add_record(struct hammer_transaction
*trans
,
1079 hammer_record_t record
);
1080 int hammer_ip_delete_range(hammer_cursor_t cursor
, hammer_inode_t ip
,
1081 int64_t ran_beg
, int64_t ran_end
, int truncating
);
1082 int hammer_ip_delete_clean(hammer_cursor_t cursor
, hammer_inode_t ip
,
1084 int hammer_ip_sync_data(hammer_cursor_t cursor
, hammer_inode_t ip
,
1085 int64_t offset
, void *data
, int bytes
);
1086 int hammer_ip_sync_record(hammer_transaction_t trans
, hammer_record_t rec
);
1087 int hammer_ip_sync_record_cursor(hammer_cursor_t cursor
, hammer_record_t rec
);
1088 hammer_pseudofs_inmem_t
hammer_load_pseudofs(hammer_transaction_t trans
,
1089 u_int32_t localization
, int *errorp
);
1090 int hammer_mkroot_pseudofs(hammer_transaction_t trans
, struct ucred
*cred
,
1091 hammer_pseudofs_inmem_t pfsm
);
1092 int hammer_save_pseudofs(hammer_transaction_t trans
,
1093 hammer_pseudofs_inmem_t pfsm
);
1094 int hammer_unload_pseudofs(hammer_transaction_t trans
, u_int32_t localization
);
1095 void hammer_rel_pseudofs(hammer_mount_t hmp
, hammer_pseudofs_inmem_t pfsm
);
1096 int hammer_ioctl(hammer_inode_t ip
, u_long com
, caddr_t data
, int fflag
,
1097 struct ucred
*cred
);
1099 void hammer_io_init(hammer_io_t io
, hammer_mount_t hmp
,
1100 enum hammer_io_type type
);
1101 int hammer_io_read(struct vnode
*devvp
, struct hammer_io
*io
,
1102 hammer_off_t limit
);
1103 int hammer_io_new(struct vnode
*devvp
, struct hammer_io
*io
);
1104 void hammer_io_inval(hammer_volume_t volume
, hammer_off_t zone2_offset
);
1105 struct buf
*hammer_io_release(struct hammer_io
*io
, int flush
);
1106 void hammer_io_flush(struct hammer_io
*io
);
1107 void hammer_io_wait(struct hammer_io
*io
);
1108 void hammer_io_waitdep(struct hammer_io
*io
);
1109 void hammer_io_wait_all(hammer_mount_t hmp
, const char *ident
);
1110 int hammer_io_direct_read(hammer_mount_t hmp
, struct bio
*bio
,
1111 hammer_btree_leaf_elm_t leaf
);
1112 int hammer_io_direct_write(hammer_mount_t hmp
, hammer_record_t record
,
1114 void hammer_io_direct_wait(hammer_record_t record
);
1115 void hammer_io_direct_uncache(hammer_mount_t hmp
, hammer_btree_leaf_elm_t leaf
);
1116 void hammer_io_write_interlock(hammer_io_t io
);
1117 void hammer_io_done_interlock(hammer_io_t io
);
1118 void hammer_io_clear_modify(struct hammer_io
*io
, int inval
);
1119 void hammer_io_clear_modlist(struct hammer_io
*io
);
1120 void hammer_modify_volume(hammer_transaction_t trans
, hammer_volume_t volume
,
1121 void *base
, int len
);
1122 void hammer_modify_buffer(hammer_transaction_t trans
, hammer_buffer_t buffer
,
1123 void *base
, int len
);
1124 void hammer_modify_volume_done(hammer_volume_t volume
);
1125 void hammer_modify_buffer_done(hammer_buffer_t buffer
);
1127 int hammer_ioc_reblock(hammer_transaction_t trans
, hammer_inode_t ip
,
1128 struct hammer_ioc_reblock
*reblock
);
1129 int hammer_ioc_prune(hammer_transaction_t trans
, hammer_inode_t ip
,
1130 struct hammer_ioc_prune
*prune
);
1131 int hammer_ioc_mirror_read(hammer_transaction_t trans
, hammer_inode_t ip
,
1132 struct hammer_ioc_mirror_rw
*mirror
);
1133 int hammer_ioc_mirror_write(hammer_transaction_t trans
, hammer_inode_t ip
,
1134 struct hammer_ioc_mirror_rw
*mirror
);
1135 int hammer_ioc_set_pseudofs(hammer_transaction_t trans
, hammer_inode_t ip
,
1136 struct ucred
*cred
, struct hammer_ioc_pseudofs_rw
*pfs
);
1137 int hammer_ioc_get_pseudofs(hammer_transaction_t trans
, hammer_inode_t ip
,
1138 struct hammer_ioc_pseudofs_rw
*pfs
);
1139 int hammer_ioc_destroy_pseudofs(hammer_transaction_t trans
, hammer_inode_t ip
,
1140 struct hammer_ioc_pseudofs_rw
*pfs
);
1141 int hammer_ioc_downgrade_pseudofs(hammer_transaction_t trans
, hammer_inode_t ip
,
1142 struct hammer_ioc_pseudofs_rw
*pfs
);
1143 int hammer_ioc_upgrade_pseudofs(hammer_transaction_t trans
, hammer_inode_t ip
,
1144 struct hammer_ioc_pseudofs_rw
*pfs
);
1145 int hammer_ioc_wait_pseudofs(hammer_transaction_t trans
, hammer_inode_t ip
,
1146 struct hammer_ioc_pseudofs_rw
*pfs
);
1148 int hammer_signal_check(hammer_mount_t hmp
);
1150 void hammer_flusher_create(hammer_mount_t hmp
);
1151 void hammer_flusher_destroy(hammer_mount_t hmp
);
1152 void hammer_flusher_sync(hammer_mount_t hmp
);
1153 int hammer_flusher_async(hammer_mount_t hmp
, hammer_flush_group_t flg
);
1154 int hammer_flusher_async_one(hammer_mount_t hmp
);
1155 void hammer_flusher_wait(hammer_mount_t hmp
, int seq
);
1156 int hammer_flusher_meta_limit(hammer_mount_t hmp
);
1157 int hammer_flusher_meta_halflimit(hammer_mount_t hmp
);
1158 int hammer_flusher_undo_exhausted(hammer_transaction_t trans
, int quarter
);
1159 void hammer_flusher_clean_loose_ios(hammer_mount_t hmp
);
1160 void hammer_flusher_finalize(hammer_transaction_t trans
, int final
);
1161 int hammer_flusher_haswork(hammer_mount_t hmp
);
1164 int hammer_recover(hammer_mount_t hmp
, hammer_volume_t rootvol
);
1165 void hammer_recover_flush_buffers(hammer_mount_t hmp
,
1166 hammer_volume_t root_volume
, int final
);
1168 void hammer_crc_set_blockmap(hammer_blockmap_t blockmap
);
1169 void hammer_crc_set_volume(hammer_volume_ondisk_t ondisk
);
1170 void hammer_crc_set_leaf(void *data
, hammer_btree_leaf_elm_t leaf
);
1172 int hammer_crc_test_blockmap(hammer_blockmap_t blockmap
);
1173 int hammer_crc_test_volume(hammer_volume_ondisk_t ondisk
);
1174 int hammer_crc_test_btree(hammer_node_ondisk_t ondisk
);
1175 int hammer_crc_test_leaf(void *data
, hammer_btree_leaf_elm_t leaf
);
1176 void hkprintf(const char *ctl
, ...);
1177 udev_t
hammer_fsid_to_udev(uuid_t
*uuid
);
1180 int hammer_blocksize(int64_t file_offset
);
1181 int64_t hammer_blockdemarc(int64_t file_offset1
, int64_t file_offset2
);
1185 static __inline
void
1186 hammer_wait_mem_record(hammer_record_t record
)
1188 hammer_wait_mem_record_ident(record
, "hmmwai");
1191 static __inline
void
1192 hammer_lock_ex(struct hammer_lock
*lock
)
1194 hammer_lock_ex_ident(lock
, "hmrlck");
1198 * Indicate that a B-Tree node is being modified.
1200 static __inline
void
1201 hammer_modify_node_noundo(hammer_transaction_t trans
, hammer_node_t node
)
1203 hammer_modify_buffer(trans
, node
->buffer
, NULL
, 0);
1206 static __inline
void
1207 hammer_modify_node_all(hammer_transaction_t trans
, struct hammer_node
*node
)
1209 hammer_modify_buffer(trans
, node
->buffer
,
1210 node
->ondisk
, sizeof(*node
->ondisk
));
1213 static __inline
void
1214 hammer_modify_node(hammer_transaction_t trans
, hammer_node_t node
,
1215 void *base
, int len
)
1217 hammer_crc_t
*crcptr
;
1219 KKASSERT((char *)base
>= (char *)node
->ondisk
&&
1220 (char *)base
+ len
<=
1221 (char *)node
->ondisk
+ sizeof(*node
->ondisk
));
1222 hammer_modify_buffer(trans
, node
->buffer
, base
, len
);
1223 crcptr
= &node
->ondisk
->crc
;
1224 hammer_modify_buffer(trans
, node
->buffer
, crcptr
, sizeof(hammer_crc_t
));
1225 --node
->buffer
->io
.modify_refs
; /* only want one ref */
1229 * Indicate that the specified modifications have been completed.
1231 * Do not try to generate the crc here, it's very expensive to do and a
1232 * sequence of insertions or deletions can result in many calls to this
1233 * function on the same node.
1235 static __inline
void
1236 hammer_modify_node_done(hammer_node_t node
)
1238 node
->flags
|= HAMMER_NODE_CRCGOOD
;
1239 if ((node
->flags
& HAMMER_NODE_NEEDSCRC
) == 0) {
1240 node
->flags
|= HAMMER_NODE_NEEDSCRC
;
1241 node
->buffer
->io
.gencrc
= 1;
1242 hammer_ref_node(node
);
1244 hammer_modify_buffer_done(node
->buffer
);
1247 #define hammer_modify_volume_field(trans, vol, field) \
1248 hammer_modify_volume(trans, vol, &(vol)->ondisk->field, \
1249 sizeof((vol)->ondisk->field))
1251 #define hammer_modify_node_field(trans, node, field) \
1252 hammer_modify_node(trans, node, &(node)->ondisk->field, \
1253 sizeof((node)->ondisk->field))