Add quirk for the Samsung YP-U3.
[dragonfly.git] / sys / vfs / hammer / hammer.h
CommitLineData
8750964d 1/*
1f07f686 2 * Copyright (c) 2007-2008 The DragonFly Project. All rights reserved.
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3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
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
16 * distribution.
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.
20 *
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
32 * SUCH DAMAGE.
33 *
842e7a70 34 * $DragonFly: src/sys/vfs/hammer/hammer.h,v 1.113 2008/07/12 02:47:39 dillon Exp $
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35 */
36/*
37 * This header file contains structures used internally by the HAMMERFS
c60bb2c5 38 * implementation. See hammer_disk.h for on-disk structures.
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39 */
40
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41#include <sys/param.h>
42#include <sys/types.h>
43#include <sys/kernel.h>
42c7d26b 44#include <sys/conf.h>
427e5fc6 45#include <sys/systm.h>
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46#include <sys/tree.h>
47#include <sys/malloc.h>
427e5fc6 48#include <sys/mount.h>
513ca7d7 49#include <sys/mountctl.h>
427e5fc6 50#include <sys/vnode.h>
42c7d26b 51#include <sys/proc.h>
e63644f0 52#include <sys/stat.h>
427e5fc6 53#include <sys/globaldata.h>
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54#include <sys/lockf.h>
55#include <sys/buf.h>
8cd0a023 56#include <sys/queue.h>
bcac4bbb 57#include <sys/ktr.h>
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58#include <sys/globaldata.h>
59
60#include <sys/buf2.h>
855942b6 61#include <sys/signal2.h>
427e5fc6 62#include "hammer_disk.h"
8750964d 63#include "hammer_mount.h"
7dc57964 64#include "hammer_ioctl.h"
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65
66#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
67
68MALLOC_DECLARE(M_HAMMER);
69
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70/*
71 * Kernel trace
72 */
73#if !defined(KTR_HAMMER)
74#define KTR_HAMMER KTR_ALL
75#endif
76KTR_INFO_MASTER_EXTERN(hammer);
77
78/*
79 * Misc structures
80 */
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81struct hammer_mount;
82
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83/*
84 * Key structure used for custom RB tree inode lookups. This prototypes
85 * the function hammer_ino_rb_tree_RB_LOOKUP_INFO(root, info).
86 */
87typedef struct hammer_inode_info {
513ca7d7 88 int64_t obj_id; /* (key) object identifier */
8750964d 89 hammer_tid_t obj_asof; /* (key) snapshot transid or 0 */
ddfdf542 90 u_int32_t obj_localization; /* (key) pseudo-fs */
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91 union {
92 struct hammer_btree_leaf_elm *leaf;
93 } u;
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94} *hammer_inode_info_t;
95
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96typedef enum hammer_transaction_type {
97 HAMMER_TRANS_RO,
98 HAMMER_TRANS_STD,
99 HAMMER_TRANS_FLS
100} hammer_transaction_type_t;
101
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102/*
103 * HAMMER Transaction tracking
104 */
105struct hammer_transaction {
b84de5af 106 hammer_transaction_type_t type;
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107 struct hammer_mount *hmp;
108 hammer_tid_t tid;
ddfdf542 109 u_int64_t time;
dd94f1b1 110 u_int32_t time32;
2f85fa4d 111 int sync_lock_refs;
a89aec1b 112 struct hammer_volume *rootvol;
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113};
114
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115typedef struct hammer_transaction *hammer_transaction_t;
116
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117/*
118 * HAMMER locks
119 */
427e5fc6 120struct hammer_lock {
0b075555 121 int refs; /* active references delay writes */
0b075555 122 int lockcount; /* lock count for exclusive/shared access */
427e5fc6 123 int wanted;
4a2796f3 124 int exwanted; /* number of threads waiting for ex lock */
427e5fc6 125 struct thread *locktd;
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126};
127
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128static __inline int
129hammer_islocked(struct hammer_lock *lock)
130{
8cd0a023 131 return(lock->lockcount != 0);
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132}
133
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134static __inline int
135hammer_isactive(struct hammer_lock *lock)
136{
137 return(lock->refs != 0);
138}
139
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140static __inline int
141hammer_islastref(struct hammer_lock *lock)
142{
143 return(lock->refs == 1);
144}
c60bb2c5 145
6a37e7e4 146/*
7aa3b8a6 147 * Return if we specifically own the lock exclusively.
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148 */
149static __inline int
7aa3b8a6 150hammer_lock_excl_owned(struct hammer_lock *lock, thread_t td)
6a37e7e4 151{
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152 if (lock->lockcount > 0 && lock->locktd == td)
153 return(1);
154 return(0);
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155}
156
ec4e8497 157/*
1f07f686 158 * Flush state, used by various structures
ec4e8497 159 */
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160typedef enum hammer_inode_state {
161 HAMMER_FST_IDLE,
162 HAMMER_FST_SETUP,
163 HAMMER_FST_FLUSH
164} hammer_inode_state_t;
ec4e8497 165
1f07f686 166TAILQ_HEAD(hammer_record_list, hammer_record);
ec4e8497 167
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168/*
169 * Pseudo-filesystem extended data tracking
170 */
171struct hammer_pfs_rb_tree;
172struct hammer_pseudofs_inmem;
173RB_HEAD(hammer_pfs_rb_tree, hammer_pseudofs_inmem);
174RB_PROTOTYPE2(hammer_pfs_rb_tree, hammer_pseudofs_inmem, rb_node,
175 hammer_pfs_rb_compare, u_int32_t);
176
177struct hammer_pseudofs_inmem {
178 RB_ENTRY(hammer_pseudofs_inmem) rb_node;
179 struct hammer_lock lock;
180 u_int32_t localization;
ea434b6f 181 hammer_tid_t create_tid;
842e7a70 182 int flags;
a56cb012 183 udev_t fsid_udev;
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184 struct hammer_pseudofs_data pfsd;
185};
186
187typedef struct hammer_pseudofs_inmem *hammer_pseudofs_inmem_t;
188
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189#define HAMMER_PFSM_DELETED 0x0001
190
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191/*
192 * Cache object ids. A fixed number of objid cache structures are
193 * created to reserve object id's for newly created files in multiples
194 * of 100,000, localized to a particular directory, and recycled as
195 * needed. This allows parallel create operations in different
196 * directories to retain fairly localized object ids which in turn
197 * improves reblocking performance and layout.
198 */
bf3b416b 199#define OBJID_CACHE_SIZE 1024
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200#define OBJID_CACHE_BULK 100000
201
202typedef struct hammer_objid_cache {
203 TAILQ_ENTRY(hammer_objid_cache) entry;
204 struct hammer_inode *dip;
205 hammer_tid_t next_tid;
206 int count;
207} *hammer_objid_cache_t;
208
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209/*
210 * Associate an inode with a B-Tree node to cache search start positions
211 */
212typedef struct hammer_node_cache {
213 TAILQ_ENTRY(hammer_node_cache) entry;
214 struct hammer_node *node;
215 struct hammer_inode *ip;
216} *hammer_node_cache_t;
217
218TAILQ_HEAD(hammer_node_cache_list, hammer_node_cache);
219
8750964d 220/*
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221 * Structure used to represent an inode in-memory.
222 *
223 * The record and data associated with an inode may be out of sync with
224 * the disk (xDIRTY flags), or not even on the disk at all (ONDISK flag
225 * clear).
226 *
227 * An inode may also hold a cache of unsynchronized records, used for
228 * database and directories only. Unsynchronized regular file data is
229 * stored in the buffer cache.
230 *
231 * NOTE: A file which is created and destroyed within the initial
232 * synchronization period can wind up not doing any disk I/O at all.
233 *
234 * Finally, an inode may cache numerous disk-referencing B-Tree cursors.
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235 */
236struct hammer_ino_rb_tree;
237struct hammer_inode;
238RB_HEAD(hammer_ino_rb_tree, hammer_inode);
239RB_PROTOTYPEX(hammer_ino_rb_tree, INFO, hammer_inode, rb_node,
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240 hammer_ino_rb_compare, hammer_inode_info_t);
241
242struct hammer_rec_rb_tree;
243struct hammer_record;
244RB_HEAD(hammer_rec_rb_tree, hammer_record);
245RB_PROTOTYPEX(hammer_rec_rb_tree, INFO, hammer_record, rb_node,
0832c9bb 246 hammer_rec_rb_compare, hammer_btree_leaf_elm_t);
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247
248TAILQ_HEAD(hammer_node_list, hammer_node);
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249
250struct hammer_inode {
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251 RB_ENTRY(hammer_inode) rb_node;
252 hammer_inode_state_t flush_state;
253 int flush_group;
059819e3 254 TAILQ_ENTRY(hammer_inode) flush_entry;
1f07f686 255 struct hammer_record_list target_list; /* target of dependant recs */
adf01747 256 int64_t obj_id; /* (key) object identifier */
b84de5af 257 hammer_tid_t obj_asof; /* (key) snapshot or 0 */
ddfdf542 258 u_int32_t obj_localization; /* (key) pseudo-fs */
b84de5af 259 struct hammer_mount *hmp;
0729c8c8 260 hammer_objid_cache_t objid_cache;
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261 int flags;
262 int error; /* flush error */
263 int cursor_ip_refs; /* sanity */
47637bff 264 int rsv_recs;
b84de5af 265 struct vnode *vp;
5fa5c92f 266 hammer_pseudofs_inmem_t pfsm;
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267 struct lockf advlock;
268 struct hammer_lock lock; /* sync copy interlock */
b84de5af 269 off_t trunc_off;
11ad5ade 270 struct hammer_btree_leaf_elm ino_leaf; /* in-memory cache */
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271 struct hammer_inode_data ino_data; /* in-memory cache */
272 struct hammer_rec_rb_tree rec_tree; /* in-memory cache */
bcac4bbb 273 struct hammer_node_cache cache[2]; /* search initiate cache */
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274
275 /*
276 * When a demark is created to synchronize an inode to
277 * disk, certain fields are copied so the front-end VOPs
278 * can continue to run in parallel with the synchronization
279 * occuring in the background.
280 */
281 int sync_flags; /* to-sync flags cache */
282 off_t sync_trunc_off; /* to-sync truncation */
a9d52b76 283 off_t save_trunc_off; /* write optimization */
11ad5ade 284 struct hammer_btree_leaf_elm sync_ino_leaf; /* to-sync cache */
b84de5af 285 struct hammer_inode_data sync_ino_data; /* to-sync cache */
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286};
287
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288typedef struct hammer_inode *hammer_inode_t;
289
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290#define VTOI(vp) ((struct hammer_inode *)(vp)->v_data)
291
8cd0a023 292#define HAMMER_INODE_DDIRTY 0x0001 /* in-memory ino_data is dirty */
ddfdf542 293 /* (not including atime/mtime) */
e63644f0 294#define HAMMER_INODE_RSV_INODES 0x0002 /* hmp->rsv_inodes bumped */
ea434b6f 295#define HAMMER_INODE_UNUSED0004 0x0004
1f07f686 296#define HAMMER_INODE_XDIRTY 0x0008 /* in-memory records */
8cd0a023 297#define HAMMER_INODE_ONDISK 0x0010 /* inode is on-disk (else not yet) */
a89aec1b 298#define HAMMER_INODE_FLUSH 0x0020 /* flush on last ref */
869e8f55 299#define HAMMER_INODE_DELETED 0x0080 /* inode delete (backend) */
76376933 300#define HAMMER_INODE_DELONDISK 0x0100 /* delete synchronized to disk */
d113fda1 301#define HAMMER_INODE_RO 0x0200 /* read-only (because of as-of) */
e8599db1 302#define HAMMER_INODE_VHELD 0x0400 /* vnode held on sync */
0a72edae 303#define HAMMER_INODE_DONDISK 0x0800 /* data records may be on disk */
f3b0f382 304#define HAMMER_INODE_BUFS 0x1000 /* dirty high level bps present */
b84de5af 305#define HAMMER_INODE_REFLUSH 0x2000 /* pipelined flush during flush */
9f5097dc 306#define HAMMER_INODE_RECLAIM 0x4000 /* trying to reclaim */
059819e3 307#define HAMMER_INODE_FLUSHW 0x8000 /* Someone waiting for flush */
8cd0a023 308
b84de5af 309#define HAMMER_INODE_TRUNCATED 0x00010000
869e8f55 310#define HAMMER_INODE_DELETING 0x00020000 /* inode delete request (frontend)*/
4e17f465 311#define HAMMER_INODE_RESIGNAL 0x00040000 /* re-signal on re-flush */
ddfdf542 312#define HAMMER_INODE_ATIME 0x00100000 /* in-memory atime modified */
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313#define HAMMER_INODE_MTIME 0x00200000 /* in-memory mtime modified */
314#define HAMMER_INODE_WOULDBLOCK 0x00400000 /* re-issue to new flush group */
b84de5af 315
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316#define HAMMER_INODE_MODMASK (HAMMER_INODE_DDIRTY| \
317 HAMMER_INODE_XDIRTY|HAMMER_INODE_BUFS| \
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318 HAMMER_INODE_ATIME|HAMMER_INODE_MTIME| \
319 HAMMER_INODE_TRUNCATED|HAMMER_INODE_DELETING)
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320
321#define HAMMER_INODE_MODMASK_NOXDIRTY \
322 (HAMMER_INODE_MODMASK & ~HAMMER_INODE_XDIRTY)
0b075555 323
cb51be26 324#define HAMMER_FLUSH_GROUP_SIZE 64
66325755 325
f90dde4c 326#define HAMMER_FLUSH_SIGNAL 0x0001
4e17f465 327#define HAMMER_FLUSH_RECURSION 0x0002
f90dde4c 328
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329/*
330 * Used by the inode reclaim code to pipeline reclaims and avoid
331 * blowing out kernel memory or letting the flusher get too far
332 * behind.
333 */
334struct hammer_reclaim {
335 TAILQ_ENTRY(hammer_reclaim) entry;
336 int okydoky;
337};
338
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339#define HAMMER_RECLAIM_FLUSH 2000
340#define HAMMER_RECLAIM_WAIT 4000
9f5097dc 341
8750964d 342/*
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343 * Structure used to represent an unsynchronized record in-memory. These
344 * records typically represent directory entries. Only non-historical
345 * records are kept in-memory.
346 *
347 * Records are organized as a per-inode RB-Tree. If the inode is not
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348 * on disk then neither are any records and the in-memory record tree
349 * represents the entire contents of the inode. If the inode is on disk
350 * then the on-disk B-Tree is scanned in parallel with the in-memory
351 * RB-Tree to synthesize the current state of the file.
352 *
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353 * Records are also used to enforce the ordering of directory create/delete
354 * operations. A new inode will not be flushed to disk unless its related
355 * directory entry is also being flushed at the same time. A directory entry
356 * will not be removed unless its related inode is also being removed at the
357 * same time.
8750964d 358 */
1f07f686 359typedef enum hammer_record_type {
e8599db1 360 HAMMER_MEM_RECORD_GENERAL, /* misc record */
930bf163 361 HAMMER_MEM_RECORD_INODE, /* inode record */
1f07f686 362 HAMMER_MEM_RECORD_ADD, /* positive memory cache record */
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363 HAMMER_MEM_RECORD_DEL, /* negative delete-on-disk record */
364 HAMMER_MEM_RECORD_DATA /* bulk-data record w/on-disk ref */
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365} hammer_record_type_t;
366
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367struct hammer_record {
368 RB_ENTRY(hammer_record) rb_node;
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369 TAILQ_ENTRY(hammer_record) target_entry;
370 hammer_inode_state_t flush_state;
371 int flush_group;
372 hammer_record_type_t type;
a89aec1b 373 struct hammer_lock lock;
0832c9bb 374 struct hammer_reserve *resv;
8cd0a023 375 struct hammer_inode *ip;
1f07f686 376 struct hammer_inode *target_ip;
11ad5ade 377 struct hammer_btree_leaf_elm leaf;
8cd0a023 378 union hammer_data_ondisk *data;
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379 int flags;
380};
8750964d 381
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382typedef struct hammer_record *hammer_record_t;
383
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384/*
385 * Record flags. Note that FE can only be set by the frontend if the
386 * record has not been interlocked by the backend w/ BE.
387 */
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388#define HAMMER_RECF_ALLOCDATA 0x0001
389#define HAMMER_RECF_ONRBTREE 0x0002
b84de5af 390#define HAMMER_RECF_DELETED_FE 0x0004 /* deleted (frontend) */
d36ec43b 391#define HAMMER_RECF_DELETED_BE 0x0008 /* deleted (backend) */
11ad5ade 392#define HAMMER_RECF_UNUSED0010 0x0010
d36ec43b 393#define HAMMER_RECF_INTERLOCK_BE 0x0020 /* backend interlock */
0832c9bb 394#define HAMMER_RECF_WANTED 0x0040 /* wanted by the frontend */
1f07f686 395#define HAMMER_RECF_CONVERT_DELETE 0x0100 /* special case */
8cd0a023 396
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397/*
398 * hammer_delete_at_cursor() flags
399 */
400#define HAMMER_DELETE_ADJUST 0x0001
401#define HAMMER_DELETE_DESTROY 0x0002
402
8cd0a023 403/*
47197d71 404 * In-memory structures representing on-disk structures.
8cd0a023 405 */
8750964d 406struct hammer_volume;
427e5fc6 407struct hammer_buffer;
8cd0a023 408struct hammer_node;
e8599db1 409struct hammer_undo;
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410struct hammer_reserve;
411
8750964d 412RB_HEAD(hammer_vol_rb_tree, hammer_volume);
427e5fc6 413RB_HEAD(hammer_buf_rb_tree, hammer_buffer);
8cd0a023 414RB_HEAD(hammer_nod_rb_tree, hammer_node);
e8599db1 415RB_HEAD(hammer_und_rb_tree, hammer_undo);
0832c9bb 416RB_HEAD(hammer_res_rb_tree, hammer_reserve);
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417
418RB_PROTOTYPE2(hammer_vol_rb_tree, hammer_volume, rb_node,
419 hammer_vol_rb_compare, int32_t);
427e5fc6 420RB_PROTOTYPE2(hammer_buf_rb_tree, hammer_buffer, rb_node,
47197d71 421 hammer_buf_rb_compare, hammer_off_t);
8cd0a023 422RB_PROTOTYPE2(hammer_nod_rb_tree, hammer_node, rb_node,
47197d71 423 hammer_nod_rb_compare, hammer_off_t);
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424RB_PROTOTYPE2(hammer_und_rb_tree, hammer_undo, rb_node,
425 hammer_und_rb_compare, hammer_off_t);
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426RB_PROTOTYPE2(hammer_res_rb_tree, hammer_reserve, rb_node,
427 hammer_res_rb_compare, hammer_off_t);
8750964d 428
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429/*
430 * IO management - embedded at the head of various in-memory structures
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431 *
432 * VOLUME - hammer_volume containing meta-data
433 * META_BUFFER - hammer_buffer containing meta-data
434 * DATA_BUFFER - hammer_buffer containing pure-data
435 *
436 * Dirty volume headers and dirty meta-data buffers are locked until the
437 * flusher can sequence them out. Dirty pure-data buffers can be written.
438 * Clean buffers can be passively released.
66325755 439 */
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440typedef enum hammer_io_type {
441 HAMMER_STRUCTURE_VOLUME,
442 HAMMER_STRUCTURE_META_BUFFER,
443 HAMMER_STRUCTURE_UNDO_BUFFER,
444 HAMMER_STRUCTURE_DATA_BUFFER
445} hammer_io_type_t;
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446
447union hammer_io_structure;
055f5ff8 448struct hammer_io;
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449
450struct worklist {
451 LIST_ENTRY(worklist) node;
452};
453
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454TAILQ_HEAD(hammer_io_list, hammer_io);
455typedef struct hammer_io_list *hammer_io_list_t;
055f5ff8 456
66325755 457struct hammer_io {
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458 struct worklist worklist;
459 struct hammer_lock lock;
460 enum hammer_io_type type;
461 struct hammer_mount *hmp;
462 TAILQ_ENTRY(hammer_io) mod_entry; /* list entry if modified */
463 hammer_io_list_t mod_list;
464 struct buf *bp;
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465 int64_t offset; /* zone-2 offset */
466 int bytes; /* buffer cache buffer size */
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467 int loading; /* loading/unloading interlock */
468 int modify_refs;
469
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470 u_int modified : 1; /* bp's data was modified */
471 u_int released : 1; /* bp released (w/ B_LOCKED set) */
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472 u_int running : 1; /* bp write IO in progress */
473 u_int waiting : 1; /* someone is waiting on us */
b33e2cc0 474 u_int validated : 1; /* ondisk has been validated */
b58c6388 475 u_int waitdep : 1; /* flush waits for dependancies */
51c35492 476 u_int recovered : 1; /* has recovery ref */
9f5097dc 477 u_int waitmod : 1; /* waiting for modify_refs */
cebe9493 478 u_int reclaim : 1; /* reclaim requested */
bcac4bbb 479 u_int gencrc : 1; /* crc needs to be generated */
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480};
481
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482typedef struct hammer_io *hammer_io_t;
483
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484#define HAMMER_CLUSTER_SIZE (64 * 1024)
485#if HAMMER_CLUSTER_SIZE > MAXBSIZE
486#undef HAMMER_CLUSTER_SIZE
487#define HAMMER_CLUSTER_SIZE MAXBSIZE
488#endif
489#define HAMMER_CLUSTER_BUFS (HAMMER_CLUSTER_SIZE / HAMMER_BUFSIZE)
490
66325755 491/*
8cd0a023 492 * In-memory volume representing on-disk buffer
66325755 493 */
8750964d 494struct hammer_volume {
66325755 495 struct hammer_io io;
8750964d 496 RB_ENTRY(hammer_volume) rb_node;
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497 struct hammer_volume_ondisk *ondisk;
498 int32_t vol_no;
fbc6e32a 499 int64_t nblocks; /* note: special calculation for statfs */
47197d71 500 int64_t buffer_base; /* base offset of buffer 0 */
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501 hammer_off_t maxbuf_off; /* Maximum buffer offset (zone-2) */
502 hammer_off_t maxraw_off; /* Maximum raw offset for device */
c60bb2c5 503 char *vol_name;
8750964d 504 struct vnode *devvp;
427e5fc6 505 int vol_flags;
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506};
507
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508typedef struct hammer_volume *hammer_volume_t;
509
66325755 510/*
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511 * In-memory buffer (other then volume, super-cluster, or cluster),
512 * representing an on-disk buffer.
66325755 513 */
427e5fc6 514struct hammer_buffer {
66325755 515 struct hammer_io io;
427e5fc6 516 RB_ENTRY(hammer_buffer) rb_node;
47197d71 517 void *ondisk;
427e5fc6 518 struct hammer_volume *volume;
34d829f7 519 hammer_off_t zoneX_offset;
0832c9bb 520 hammer_off_t zone2_offset;
cebe9493 521 struct hammer_reserve *resv;
8cd0a023 522 struct hammer_node_list clist;
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523};
524
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525typedef struct hammer_buffer *hammer_buffer_t;
526
527/*
528 * In-memory B-Tree node, representing an on-disk B-Tree node.
529 *
530 * This is a hang-on structure which is backed by a hammer_buffer,
531 * indexed by a hammer_cluster, and used for fine-grained locking of
532 * B-Tree nodes in order to properly control lock ordering. A hammer_buffer
533 * can contain multiple nodes representing wildly disassociated portions
534 * of the B-Tree so locking cannot be done on a buffer-by-buffer basis.
535 *
536 * This structure uses a cluster-relative index to reduce the number
537 * of layers required to access it, and also because all on-disk B-Tree
538 * references are cluster-relative offsets.
539 */
540struct hammer_node {
541 struct hammer_lock lock; /* node-by-node lock */
542 TAILQ_ENTRY(hammer_node) entry; /* per-buffer linkage */
543 RB_ENTRY(hammer_node) rb_node; /* per-cluster linkage */
47197d71 544 hammer_off_t node_offset; /* full offset spec */
40043e7f 545 struct hammer_mount *hmp;
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546 struct hammer_buffer *buffer; /* backing buffer */
547 hammer_node_ondisk_t ondisk; /* ptr to on-disk structure */
b3bad96f 548 TAILQ_HEAD(, hammer_cursor) cursor_list; /* deadlock recovery */
bcac4bbb 549 struct hammer_node_cache_list cache_list; /* passive caches */
b3deaf57 550 int flags;
740d8317 551 int loading; /* load interlock */
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552};
553
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554#define HAMMER_NODE_DELETED 0x0001
555#define HAMMER_NODE_FLUSH 0x0002
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556#define HAMMER_NODE_CRCGOOD 0x0004
557#define HAMMER_NODE_NEEDSCRC 0x0008
c82af904 558#define HAMMER_NODE_NEEDSMIRROR 0x0010
b3deaf57 559
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560typedef struct hammer_node *hammer_node_t;
561
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562/*
563 * List of locked nodes.
564 */
565struct hammer_node_locklist {
566 struct hammer_node_locklist *next;
567 hammer_node_t node;
568};
569
570typedef struct hammer_node_locklist *hammer_node_locklist_t;
571
572
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573/*
574 * Common I/O management structure - embedded in in-memory structures
575 * which are backed by filesystem buffers.
576 */
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577union hammer_io_structure {
578 struct hammer_io io;
579 struct hammer_volume volume;
66325755 580 struct hammer_buffer buffer;
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581};
582
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583typedef union hammer_io_structure *hammer_io_structure_t;
584
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585/*
586 * The reserve structure prevents the blockmap from allocating
587 * out of a reserved bigblock. Such reservations are used by
588 * the direct-write mechanism.
589 *
590 * The structure is also used to hold off on reallocations of
591 * big blocks from the freemap until flush dependancies have
592 * been dealt with.
593 */
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594struct hammer_reserve {
595 RB_ENTRY(hammer_reserve) rb_node;
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596 TAILQ_ENTRY(hammer_reserve) delay_entry;
597 int flush_group;
cb51be26 598 int flags;
0832c9bb 599 int refs;
cb51be26 600 int zone;
df301614 601 int append_off;
cebe9493 602 hammer_off_t zone_offset;
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603};
604
605typedef struct hammer_reserve *hammer_reserve_t;
606
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607#define HAMMER_RESF_ONDELAY 0x0001
608
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609#include "hammer_cursor.h"
610
e8599db1 611/*
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612 * The undo structure tracks recent undos to avoid laying down duplicate
613 * undos within a flush group, saving us a significant amount of overhead.
614 *
615 * This is strictly a heuristic.
e8599db1 616 */
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617#define HAMMER_MAX_UNDOS 1024
618#define HAMMER_MAX_FLUSHERS 4
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619
620struct hammer_undo {
621 RB_ENTRY(hammer_undo) rb_node;
622 TAILQ_ENTRY(hammer_undo) lru_entry;
623 hammer_off_t offset;
624 int bytes;
625};
626
627typedef struct hammer_undo *hammer_undo_t;
628
af209b0f 629struct hammer_flusher_info;
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630
631struct hammer_flusher {
632 int signal; /* flusher thread sequencer */
633 int act; /* currently active flush group */
634 int done; /* set to act when complete */
635 int next; /* next flush group */
636 int group_lock; /* lock sequencing of the next flush */
637 int exiting; /* request master exit */
638 int count; /* number of slave flushers */
639 int running; /* number of slave flushers running */
640 thread_t td; /* master flusher thread */
641 hammer_tid_t tid; /* last flushed transaction id */
642 int finalize_want; /* serialize finalization */
643 struct hammer_lock finalize_lock; /* serialize finalization */
644 struct hammer_transaction trans; /* shared transaction */
645 struct hammer_flusher_info *info[HAMMER_MAX_FLUSHERS];
646};
647
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648/*
649 * Internal hammer mount data structure
650 */
651struct hammer_mount {
652 struct mount *mp;
27ea2398 653 /*struct vnode *rootvp;*/
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654 struct hammer_ino_rb_tree rb_inos_root;
655 struct hammer_vol_rb_tree rb_vols_root;
40043e7f 656 struct hammer_nod_rb_tree rb_nods_root;
e8599db1 657 struct hammer_und_rb_tree rb_undo_root;
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658 struct hammer_res_rb_tree rb_resv_root;
659 struct hammer_buf_rb_tree rb_bufs_root;
5fa5c92f 660 struct hammer_pfs_rb_tree rb_pfsm_root;
8750964d 661 struct hammer_volume *rootvol;
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662 struct hammer_base_elm root_btree_beg;
663 struct hammer_base_elm root_btree_end;
9f5097dc 664 int flags;
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665 int hflags;
666 int ronly;
667 int nvolumes;
d26d0ae9 668 int volume_iterator;
5de0c0e5 669 int masterid; /* -1 or 0-15 - clustering and mirroring */
e63644f0 670 int rsv_inodes; /* reserved space due to dirty inodes */
a7e9bef1 671 int64_t rsv_databytes; /* reserved space due to record data */
e63644f0 672 int rsv_recs; /* reserved space due to dirty records */
a7e9bef1 673 int rsv_fromdelay; /* bigblocks reserved due to flush delay */
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674 int last_newrecords;
675 int count_newrecords;
da2da375 676
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677 int inode_reclaims; /* inodes pending reclaim by flusher */
678 int count_inodes; /* total number of inodes */
af209b0f 679 int count_iqueued; /* inodes queued to flusher */
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680
681 struct hammer_flusher flusher;
682
855942b6 683 u_int check_interrupt;
8750964d 684 uuid_t fsid;
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685 struct hammer_io_list volu_list; /* dirty undo buffers */
686 struct hammer_io_list undo_list; /* dirty undo buffers */
687 struct hammer_io_list data_list; /* dirty data buffers */
0832c9bb 688 struct hammer_io_list alt_data_list; /* dirty data buffers */
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689 struct hammer_io_list meta_list; /* dirty meta bufs */
690 struct hammer_io_list lose_list; /* loose buffers */
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691 int locked_dirty_space; /* meta/volu count */
692 int io_running_space;
0729c8c8 693 int objid_cache_count;
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694 hammer_tid_t asof; /* snapshot mount */
695 hammer_off_t next_tid;
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696 int64_t copy_stat_freebigblocks; /* number of free bigblocks */
697
66325755 698 u_int32_t namekey_iterator;
513ca7d7 699 struct netexport export;
9480ff55 700 struct hammer_lock sync_lock;
c9b9e29d 701 struct hammer_lock free_lock;
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702 struct hammer_lock undo_lock;
703 struct hammer_lock blkmap_lock;
0729c8c8 704 struct hammer_blockmap blockmap[HAMMER_MAX_ZONES];
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705 struct hammer_undo undos[HAMMER_MAX_UNDOS];
706 int undo_alloc;
707 TAILQ_HEAD(, hammer_undo) undo_lru_list;
059819e3 708 TAILQ_HEAD(, hammer_inode) flush_list;
cebe9493 709 TAILQ_HEAD(, hammer_reserve) delay_list;
0729c8c8 710 TAILQ_HEAD(, hammer_objid_cache) objid_cache_list;
7bc5b8c2 711 TAILQ_HEAD(, hammer_reclaim) reclaim_list;
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712};
713
8cd0a023 714typedef struct hammer_mount *hammer_mount_t;
8750964d 715
7bc5b8c2 716#define HAMMER_MOUNT_UNUSED0001 0x0001
9f5097dc 717
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718struct hammer_sync_info {
719 int error;
720 int waitfor;
721};
722
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723#endif
724
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725/*
726 * checkspace slop (8MB chunks), higher numbers are more conservative.
727 */
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728#define HAMMER_CHKSPC_REBLOCK 25
729#define HAMMER_CHKSPC_MIRROR 20
730#define HAMMER_CHKSPC_WRITE 20
731#define HAMMER_CHKSPC_CREATE 20
732#define HAMMER_CHKSPC_REMOVE 10
a7e9bef1 733
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734#if defined(_KERNEL)
735
736extern struct vop_ops hammer_vnode_vops;
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737extern struct vop_ops hammer_spec_vops;
738extern struct vop_ops hammer_fifo_vops;
66325755 739extern struct bio_ops hammer_bioops;
427e5fc6 740
2f85fa4d 741extern int hammer_debug_io;
d5ef456e 742extern int hammer_debug_general;
77062c8a 743extern int hammer_debug_debug;
e8599db1 744extern int hammer_debug_inode;
7d683b0f 745extern int hammer_debug_locks;
b3deaf57 746extern int hammer_debug_btree;
d113fda1 747extern int hammer_debug_tid;
b33e2cc0 748extern int hammer_debug_recover;
46fe7ae1 749extern int hammer_debug_recover_faults;
a99b9ea2 750extern int hammer_debug_cluster_enable;
b3deaf57 751extern int hammer_count_inodes;
af209b0f 752extern int hammer_count_iqueued;
9f5097dc 753extern int hammer_count_reclaiming;
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754extern int hammer_count_records;
755extern int hammer_count_record_datas;
756extern int hammer_count_volumes;
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757extern int hammer_count_buffers;
758extern int hammer_count_nodes;
a7e9bef1 759extern int64_t hammer_count_extra_space_used;
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760extern int64_t hammer_stats_btree_lookups;
761extern int64_t hammer_stats_btree_searches;
762extern int64_t hammer_stats_btree_inserts;
763extern int64_t hammer_stats_btree_deletes;
764extern int64_t hammer_stats_btree_elements;
765extern int64_t hammer_stats_btree_splits;
766extern int64_t hammer_stats_btree_iterations;
767extern int64_t hammer_stats_record_iterations;
f5a07a7a 768extern int hammer_count_dirtybufspace;
a99b9ea2 769extern int hammer_count_refedbufs;
0832c9bb 770extern int hammer_count_reservations;
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771extern int hammer_count_io_running_read;
772extern int hammer_count_io_running_write;
773extern int hammer_count_io_locked;
f5a07a7a 774extern int hammer_limit_dirtybufspace;
af209b0f 775extern int hammer_limit_iqueued;
47637bff 776extern int hammer_limit_recs;
1f07f686 777extern int hammer_bio_count;
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778extern int hammer_verify_zone;
779extern int hammer_write_mode;
7d683b0f 780extern int64_t hammer_contention_count;
b3deaf57 781
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782int hammer_vop_inactive(struct vop_inactive_args *);
783int hammer_vop_reclaim(struct vop_reclaim_args *);
e8599db1 784int hammer_get_vnode(struct hammer_inode *ip, struct vnode **vpp);
36f82b23 785struct hammer_inode *hammer_get_inode(hammer_transaction_t trans,
adf01747 786 hammer_inode_t dip, int64_t obj_id,
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787 hammer_tid_t asof, u_int32_t localization,
788 int flags, int *errorp);
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789void hammer_scan_inode_snapshots(hammer_mount_t hmp,
790 hammer_inode_info_t iinfo,
791 int (*callback)(hammer_inode_t ip, void *data),
792 void *data);
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793void hammer_put_inode(struct hammer_inode *ip);
794void hammer_put_inode_ref(struct hammer_inode *ip);
4a2796f3 795void hammer_inode_waitreclaims(hammer_mount_t hmp);
66325755 796
8cd0a023 797int hammer_unload_volume(hammer_volume_t volume, void *data __unused);
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798int hammer_adjust_volume_mode(hammer_volume_t volume, void *data __unused);
799
a89aec1b 800int hammer_unload_buffer(hammer_buffer_t buffer, void *data __unused);
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801int hammer_install_volume(hammer_mount_t hmp, const char *volname);
802
45a014dc 803int hammer_ip_lookup(hammer_cursor_t cursor);
4e17f465 804int hammer_ip_first(hammer_cursor_t cursor);
a89aec1b 805int hammer_ip_next(hammer_cursor_t cursor);
8cd0a023 806int hammer_ip_resolve_data(hammer_cursor_t cursor);
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807int hammer_ip_delete_record(hammer_cursor_t cursor, hammer_inode_t ip,
808 hammer_tid_t tid);
602c6cb8 809int hammer_delete_at_cursor(hammer_cursor_t cursor, int delete_flags,
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MD
810 hammer_tid_t delete_tid, u_int32_t delete_ts,
811 int track, int64_t *stat_bytes);
b3deaf57 812int hammer_ip_check_directory_empty(hammer_transaction_t trans,
98f7132d 813 hammer_inode_t ip);
fbc6e32a 814int hammer_sync_hmp(hammer_mount_t hmp, int waitfor);
f36a9737
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815int hammer_queue_inodes_flusher(hammer_mount_t hmp, int waitfor);
816
8cd0a023 817hammer_record_t
11ad5ade 818 hammer_alloc_mem_record(hammer_inode_t ip, int data_len);
d36ec43b 819void hammer_flush_record_done(hammer_record_t record, int error);
af209b0f 820void hammer_wait_mem_record_ident(hammer_record_t record, const char *ident);
b3deaf57 821void hammer_rel_mem_record(hammer_record_t record);
b84de5af 822
6a37e7e4 823int hammer_cursor_up(hammer_cursor_t cursor);
f36a9737 824int hammer_cursor_up_locked(hammer_cursor_t cursor);
8cd0a023 825int hammer_cursor_down(hammer_cursor_t cursor);
6a37e7e4 826int hammer_cursor_upgrade(hammer_cursor_t cursor);
7bc5b8c2 827int hammer_cursor_upgrade_node(hammer_cursor_t cursor);
6a37e7e4 828void hammer_cursor_downgrade(hammer_cursor_t cursor);
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829int hammer_cursor_seek(hammer_cursor_t cursor, hammer_node_t node,
830 int index);
af209b0f 831void hammer_lock_ex_ident(struct hammer_lock *lock, const char *ident);
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832int hammer_lock_ex_try(struct hammer_lock *lock);
833void hammer_lock_sh(struct hammer_lock *lock);
47637bff 834int hammer_lock_sh_try(struct hammer_lock *lock);
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835int hammer_lock_upgrade(struct hammer_lock *lock);
836void hammer_lock_downgrade(struct hammer_lock *lock);
b3bad96f 837int hammer_lock_status(struct hammer_lock *lock);
427e5fc6 838void hammer_unlock(struct hammer_lock *lock);
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839void hammer_ref(struct hammer_lock *lock);
840void hammer_unref(struct hammer_lock *lock);
8cd0a023 841
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842void hammer_sync_lock_ex(hammer_transaction_t trans);
843void hammer_sync_lock_sh(hammer_transaction_t trans);
47637bff 844int hammer_sync_lock_sh_try(hammer_transaction_t trans);
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845void hammer_sync_unlock(hammer_transaction_t trans);
846
66325755 847u_int32_t hammer_to_unix_xid(uuid_t *uuid);
8cd0a023 848void hammer_guid_to_uuid(uuid_t *uuid, u_int32_t guid);
ddfdf542
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849void hammer_time_to_timespec(u_int64_t xtime, struct timespec *ts);
850u_int64_t hammer_timespec_to_time(struct timespec *ts);
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851hammer_tid_t hammer_str_to_tid(const char *str, int *ispfs,
852 u_int32_t *localizationp);
5de0c0e5 853hammer_tid_t hammer_alloc_objid(hammer_mount_t hmp, hammer_inode_t dip);
0729c8c8
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854void hammer_clear_objid(hammer_inode_t dip);
855void hammer_destroy_objid_cache(hammer_mount_t hmp);
8cd0a023 856
e8599db1 857int hammer_enter_undo_history(hammer_mount_t hmp, hammer_off_t offset,
b3bad96f 858 int bytes);
e8599db1 859void hammer_clear_undo_history(hammer_mount_t hmp);
66325755 860enum vtype hammer_get_vnode_type(u_int8_t obj_type);
6b4f890b 861int hammer_get_dtype(u_int8_t obj_type);
66325755 862u_int8_t hammer_get_obj_type(enum vtype vtype);
5a930e66 863int64_t hammer_directory_namekey(const void *name, int len);
e63644f0 864int hammer_nohistory(hammer_inode_t ip);
427e5fc6 865
36f82b23 866int hammer_init_cursor(hammer_transaction_t trans, hammer_cursor_t cursor,
b3bad96f 867 hammer_node_cache_t cache, hammer_inode_t ip);
4e17f465 868void hammer_normalize_cursor(hammer_cursor_t cursor);
8cd0a023 869void hammer_done_cursor(hammer_cursor_t cursor);
b3bad96f 870int hammer_recover_cursor(hammer_cursor_t cursor);
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871void hammer_unlock_cursor(hammer_cursor_t cursor, int also_ip);
872int hammer_lock_cursor(hammer_cursor_t cursor, int also_ip);
873hammer_cursor_t hammer_push_cursor(hammer_cursor_t ocursor);
874void hammer_pop_cursor(hammer_cursor_t ocursor, hammer_cursor_t ncursor);
b3bad96f
MD
875
876void hammer_cursor_replaced_node(hammer_node_t onode, hammer_node_t nnode);
877void hammer_cursor_removed_node(hammer_node_t onode, hammer_node_t parent,
878 int index);
879void hammer_cursor_split_node(hammer_node_t onode, hammer_node_t nnode,
880 int index);
881void hammer_cursor_inserted_element(hammer_node_t node, int index);
882void hammer_cursor_deleted_element(hammer_node_t node, int index);
8cd0a023
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883
884int hammer_btree_lookup(hammer_cursor_t cursor);
d26d0ae9 885int hammer_btree_first(hammer_cursor_t cursor);
32c90105 886int hammer_btree_last(hammer_cursor_t cursor);
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MD
887int hammer_btree_extract(hammer_cursor_t cursor, int flags);
888int hammer_btree_iterate(hammer_cursor_t cursor);
32c90105 889int hammer_btree_iterate_reverse(hammer_cursor_t cursor);
11ad5ade 890int hammer_btree_insert(hammer_cursor_t cursor,
602c6cb8 891 hammer_btree_leaf_elm_t elm, int *doprop);
8cd0a023 892int hammer_btree_delete(hammer_cursor_t cursor);
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MD
893void hammer_btree_do_propagation(hammer_cursor_t cursor,
894 hammer_pseudofs_inmem_t pfsm,
602c6cb8 895 hammer_btree_leaf_elm_t leaf);
8cd0a023 896int hammer_btree_cmp(hammer_base_elm_t key1, hammer_base_elm_t key2);
d26d0ae9 897int hammer_btree_chkts(hammer_tid_t ts, hammer_base_elm_t key);
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898int hammer_btree_correct_rhb(hammer_cursor_t cursor, hammer_tid_t tid);
899int hammer_btree_correct_lhb(hammer_cursor_t cursor, hammer_tid_t tid);
900
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901int btree_set_parent(hammer_transaction_t trans, hammer_node_t node,
902 hammer_btree_elm_t elm);
b33e2cc0
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903int hammer_btree_lock_children(hammer_cursor_t cursor,
904 struct hammer_node_locklist **locklistp);
2f85fa4d 905void hammer_btree_unlock_children(struct hammer_node_locklist **locklistp);
bcac4bbb 906int hammer_btree_search_node(hammer_base_elm_t elm, hammer_node_ondisk_t node);
c82af904
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907hammer_node_t hammer_btree_get_parent(hammer_node_t node, int *parent_indexp,
908 int *errorp, int try_exclusive);
b33e2cc0 909
c0ade690
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910void hammer_print_btree_node(hammer_node_ondisk_t ondisk);
911void hammer_print_btree_elm(hammer_btree_elm_t elm, u_int8_t type, int i);
8750964d 912
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913void *hammer_bread(struct hammer_mount *hmp, hammer_off_t off,
914 int *errorp, struct hammer_buffer **bufferp);
915void *hammer_bnew(struct hammer_mount *hmp, hammer_off_t off,
916 int *errorp, struct hammer_buffer **bufferp);
4a2796f3
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917void *hammer_bread_ext(struct hammer_mount *hmp, hammer_off_t off, int bytes,
918 int *errorp, struct hammer_buffer **bufferp);
919void *hammer_bnew_ext(struct hammer_mount *hmp, hammer_off_t off, int bytes,
920 int *errorp, struct hammer_buffer **bufferp);
8cd0a023
MD
921
922hammer_volume_t hammer_get_root_volume(hammer_mount_t hmp, int *errorp);
427e5fc6 923
8cd0a023 924hammer_volume_t hammer_get_volume(hammer_mount_t hmp,
427e5fc6 925 int32_t vol_no, int *errorp);
4a2796f3
MD
926hammer_buffer_t hammer_get_buffer(hammer_mount_t hmp, hammer_off_t buf_offset,
927 int bytes, int isnew, int *errorp);
0832c9bb
MD
928void hammer_del_buffers(hammer_mount_t hmp, hammer_off_t base_offset,
929 hammer_off_t zone2_offset, int bytes);
8cd0a023 930
fbc6e32a 931int hammer_ref_volume(hammer_volume_t volume);
8cd0a023
MD
932int hammer_ref_buffer(hammer_buffer_t buffer);
933void hammer_flush_buffer_nodes(hammer_buffer_t buffer);
934
8cd0a023 935void hammer_rel_volume(hammer_volume_t volume, int flush);
8cd0a023
MD
936void hammer_rel_buffer(hammer_buffer_t buffer, int flush);
937
513ca7d7
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938int hammer_vfs_export(struct mount *mp, int op,
939 const struct export_args *export);
19619882
MD
940hammer_node_t hammer_get_node(hammer_mount_t hmp, hammer_off_t node_offset,
941 int isnew, int *errorp);
740d8317 942void hammer_ref_node(hammer_node_t node);
055f5ff8 943hammer_node_t hammer_ref_node_safe(struct hammer_mount *hmp,
bcac4bbb 944 hammer_node_cache_t cache, int *errorp);
8cd0a023 945void hammer_rel_node(hammer_node_t node);
36f82b23
MD
946void hammer_delete_node(hammer_transaction_t trans,
947 hammer_node_t node);
bcac4bbb
MD
948void hammer_cache_node(hammer_node_cache_t cache,
949 hammer_node_t node);
950void hammer_uncache_node(hammer_node_cache_t cache);
8cd0a023
MD
951void hammer_flush_node(hammer_node_t node);
952
427e5fc6
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953void hammer_dup_buffer(struct hammer_buffer **bufferp,
954 struct hammer_buffer *buffer);
36f82b23 955hammer_node_t hammer_alloc_btree(hammer_transaction_t trans, int *errorp);
36f82b23 956void *hammer_alloc_data(hammer_transaction_t trans, int32_t data_len,
bf3b416b 957 u_int16_t rec_type, hammer_off_t *data_offsetp,
bf686dbe
MD
958 struct hammer_buffer **data_bufferp, int *errorp);
959
059819e3
MD
960int hammer_generate_undo(hammer_transaction_t trans, hammer_io_t io,
961 hammer_off_t zone1_offset, void *base, int len);
427e5fc6 962
66325755 963void hammer_put_volume(struct hammer_volume *volume, int flush);
66325755 964void hammer_put_buffer(struct hammer_buffer *buffer, int flush);
427e5fc6 965
36f82b23
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966hammer_off_t hammer_freemap_alloc(hammer_transaction_t trans,
967 hammer_off_t owner, int *errorp);
968void hammer_freemap_free(hammer_transaction_t trans, hammer_off_t phys_offset,
c3be93f2 969 hammer_off_t owner, int *errorp);
a7e9bef1 970int hammer_checkspace(hammer_mount_t hmp, int slop);
36f82b23 971hammer_off_t hammer_blockmap_alloc(hammer_transaction_t trans, int zone,
40043e7f 972 int bytes, int *errorp);
0832c9bb
MD
973hammer_reserve_t hammer_blockmap_reserve(hammer_mount_t hmp, int zone,
974 int bytes, hammer_off_t *zone_offp, int *errorp);
975void hammer_blockmap_reserve_complete(hammer_mount_t hmp,
976 hammer_reserve_t resv);
cb51be26 977void hammer_reserve_clrdelay(hammer_mount_t hmp, hammer_reserve_t resv);
36f82b23
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978void hammer_blockmap_free(hammer_transaction_t trans,
979 hammer_off_t bmap_off, int bytes);
4a2796f3
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980void hammer_blockmap_finalize(hammer_transaction_t trans,
981 hammer_off_t bmap_off, int bytes);
bf686dbe
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982int hammer_blockmap_getfree(hammer_mount_t hmp, hammer_off_t bmap_off,
983 int *curp, int *errorp);
40043e7f
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984hammer_off_t hammer_blockmap_lookup(hammer_mount_t hmp, hammer_off_t bmap_off,
985 int *errorp);
bf686dbe
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986hammer_off_t hammer_undo_lookup(hammer_mount_t hmp, hammer_off_t bmap_off,
987 int *errorp);
06ad81ff
MD
988int64_t hammer_undo_used(hammer_transaction_t trans);
989int64_t hammer_undo_space(hammer_transaction_t trans);
1f07f686
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990int64_t hammer_undo_max(hammer_mount_t hmp);
991
8cd0a023
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992void hammer_start_transaction(struct hammer_transaction *trans,
993 struct hammer_mount *hmp);
36f82b23
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994void hammer_simple_transaction(struct hammer_transaction *trans,
995 struct hammer_mount *hmp);
b84de5af
MD
996void hammer_start_transaction_fls(struct hammer_transaction *trans,
997 struct hammer_mount *hmp);
998void hammer_done_transaction(struct hammer_transaction *trans);
66325755 999
47637bff 1000void hammer_modify_inode(hammer_inode_t ip, int flags);
f90dde4c 1001void hammer_flush_inode(hammer_inode_t ip, int flags);
b84de5af
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1002void hammer_flush_inode_done(hammer_inode_t ip);
1003void hammer_wait_inode(hammer_inode_t ip);
1004
8cd0a023
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1005int hammer_create_inode(struct hammer_transaction *trans, struct vattr *vap,
1006 struct ucred *cred, struct hammer_inode *dip,
ea434b6f
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1007 hammer_pseudofs_inmem_t pfsm,
1008 struct hammer_inode **ipp);
a89aec1b 1009void hammer_rel_inode(hammer_inode_t ip, int flush);
51c35492 1010int hammer_reload_inode(hammer_inode_t ip, void *arg __unused);
af209b0f 1011int hammer_ino_rb_compare(hammer_inode_t ip1, hammer_inode_t ip2);
51c35492 1012
1f07f686
MD
1013int hammer_sync_inode(hammer_inode_t ip);
1014void hammer_test_inode(hammer_inode_t ip);
e8599db1 1015void hammer_inode_unloadable_check(hammer_inode_t ip, int getvp);
8cd0a023 1016
a89aec1b 1017int hammer_ip_add_directory(struct hammer_transaction *trans,
5a930e66 1018 hammer_inode_t dip, const char *name, int bytes,
8cd0a023 1019 hammer_inode_t nip);
a89aec1b 1020int hammer_ip_del_directory(struct hammer_transaction *trans,
8cd0a023
MD
1021 hammer_cursor_t cursor, hammer_inode_t dip,
1022 hammer_inode_t ip);
47637bff 1023hammer_record_t hammer_ip_add_bulk(hammer_inode_t ip, off_t file_offset,
0832c9bb 1024 void *data, int bytes, int *errorp);
47637bff 1025int hammer_ip_frontend_trunc(struct hammer_inode *ip, off_t file_size);
7a04d74f
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1026int hammer_ip_add_record(struct hammer_transaction *trans,
1027 hammer_record_t record);
4e17f465 1028int hammer_ip_delete_range(hammer_cursor_t cursor, hammer_inode_t ip,
47637bff 1029 int64_t ran_beg, int64_t ran_end, int truncating);
a9d52b76 1030int hammer_ip_delete_clean(hammer_cursor_t cursor, hammer_inode_t ip,
4e17f465
MD
1031 int *countp);
1032int hammer_ip_sync_data(hammer_cursor_t cursor, hammer_inode_t ip,
1033 int64_t offset, void *data, int bytes);
36f82b23 1034int hammer_ip_sync_record(hammer_transaction_t trans, hammer_record_t rec);
4e17f465 1035int hammer_ip_sync_record_cursor(hammer_cursor_t cursor, hammer_record_t rec);
ea434b6f
MD
1036hammer_pseudofs_inmem_t hammer_load_pseudofs(hammer_transaction_t trans,
1037 u_int32_t localization, int *errorp);
1038int hammer_mkroot_pseudofs(hammer_transaction_t trans, struct ucred *cred,
1039 hammer_pseudofs_inmem_t pfsm);
1040int hammer_save_pseudofs(hammer_transaction_t trans,
1041 hammer_pseudofs_inmem_t pfsm);
842e7a70 1042int hammer_unload_pseudofs(hammer_transaction_t trans, u_int32_t localization);
5fa5c92f 1043void hammer_rel_pseudofs(hammer_mount_t hmp, hammer_pseudofs_inmem_t pfsm);
7dc57964
MD
1044int hammer_ioctl(hammer_inode_t ip, u_long com, caddr_t data, int fflag,
1045 struct ucred *cred);
1046
10a5d1ba
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1047void hammer_io_init(hammer_io_t io, hammer_mount_t hmp,
1048 enum hammer_io_type type);
2f85fa4d
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1049int hammer_io_read(struct vnode *devvp, struct hammer_io *io,
1050 hammer_off_t limit);
66325755 1051int hammer_io_new(struct vnode *devvp, struct hammer_io *io);
47637bff 1052void hammer_io_inval(hammer_volume_t volume, hammer_off_t zone2_offset);
ecca949a 1053struct buf *hammer_io_release(struct hammer_io *io, int flush);
055f5ff8 1054void hammer_io_flush(struct hammer_io *io);
055f5ff8 1055void hammer_io_waitdep(struct hammer_io *io);
af209b0f 1056void hammer_io_wait_all(hammer_mount_t hmp, const char *ident);
4a2796f3 1057int hammer_io_direct_read(hammer_mount_t hmp, struct bio *bio);
47637bff
MD
1058int hammer_io_direct_write(hammer_mount_t hmp, hammer_btree_leaf_elm_t leaf,
1059 struct bio *bio);
43c665ae 1060void hammer_io_direct_uncache(hammer_mount_t hmp, hammer_btree_leaf_elm_t leaf);
9f5097dc
MD
1061void hammer_io_write_interlock(hammer_io_t io);
1062void hammer_io_done_interlock(hammer_io_t io);
4a2796f3 1063void hammer_io_clear_modify(struct hammer_io *io, int inval);
cebe9493 1064void hammer_io_clear_modlist(struct hammer_io *io);
36f82b23
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1065void hammer_modify_volume(hammer_transaction_t trans, hammer_volume_t volume,
1066 void *base, int len);
1067void hammer_modify_buffer(hammer_transaction_t trans, hammer_buffer_t buffer,
1068 void *base, int len);
10a5d1ba
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1069void hammer_modify_volume_done(hammer_volume_t volume);
1070void hammer_modify_buffer_done(hammer_buffer_t buffer);
0b075555 1071
36f82b23
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1072int hammer_ioc_reblock(hammer_transaction_t trans, hammer_inode_t ip,
1073 struct hammer_ioc_reblock *reblock);
11ad5ade
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1074int hammer_ioc_prune(hammer_transaction_t trans, hammer_inode_t ip,
1075 struct hammer_ioc_prune *prune);
c82af904
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1076int hammer_ioc_mirror_read(hammer_transaction_t trans, hammer_inode_t ip,
1077 struct hammer_ioc_mirror_rw *mirror);
1078int hammer_ioc_mirror_write(hammer_transaction_t trans, hammer_inode_t ip,
1079 struct hammer_ioc_mirror_rw *mirror);
5fa5c92f 1080int hammer_ioc_set_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
ea434b6f 1081 struct ucred *cred, struct hammer_ioc_pseudofs_rw *pfs);
5fa5c92f
MD
1082int hammer_ioc_get_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1083 struct hammer_ioc_pseudofs_rw *pfs);
842e7a70
MD
1084int hammer_ioc_destroy_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1085 struct hammer_ioc_pseudofs_rw *pfs);
1086int hammer_ioc_downgrade_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1087 struct hammer_ioc_pseudofs_rw *pfs);
1088int hammer_ioc_upgrade_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1089 struct hammer_ioc_pseudofs_rw *pfs);
bf686dbe 1090
855942b6 1091int hammer_signal_check(hammer_mount_t hmp);
bf686dbe 1092
059819e3
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1093void hammer_flusher_create(hammer_mount_t hmp);
1094void hammer_flusher_destroy(hammer_mount_t hmp);
1095void hammer_flusher_sync(hammer_mount_t hmp);
93291532
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1096int hammer_flusher_async(hammer_mount_t hmp);
1097void hammer_flusher_wait(hammer_mount_t hmp, int seq);
06ad81ff 1098int hammer_flusher_meta_limit(hammer_mount_t hmp);
93291532 1099int hammer_flusher_meta_halflimit(hammer_mount_t hmp);
06ad81ff 1100int hammer_flusher_undo_exhausted(hammer_transaction_t trans, int quarter);
525aad3a 1101void hammer_flusher_clean_loose_ios(hammer_mount_t hmp);
6c1f89f4 1102void hammer_flusher_finalize(hammer_transaction_t trans, int final);
059819e3 1103
f90dde4c 1104int hammer_recover(hammer_mount_t hmp, hammer_volume_t rootvol);
51c35492 1105void hammer_recover_flush_buffers(hammer_mount_t hmp,
06ad81ff 1106 hammer_volume_t root_volume, int final);
f90dde4c 1107
19619882
MD
1108void hammer_crc_set_blockmap(hammer_blockmap_t blockmap);
1109void hammer_crc_set_volume(hammer_volume_ondisk_t ondisk);
ddfdf542 1110void hammer_crc_set_leaf(void *data, hammer_btree_leaf_elm_t leaf);
19619882
MD
1111
1112int hammer_crc_test_blockmap(hammer_blockmap_t blockmap);
1113int hammer_crc_test_volume(hammer_volume_ondisk_t ondisk);
19619882 1114int hammer_crc_test_btree(hammer_node_ondisk_t ondisk);
ddfdf542 1115int hammer_crc_test_leaf(void *data, hammer_btree_leaf_elm_t leaf);
77062c8a 1116void hkprintf(const char *ctl, ...);
a56cb012
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1117udev_t hammer_fsid_to_udev(uuid_t *uuid);
1118
19619882 1119
4a2796f3
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1120int hammer_blocksize(int64_t file_offset);
1121int64_t hammer_blockdemarc(int64_t file_offset1, int64_t file_offset2);
1122
055f5ff8 1123#endif
427e5fc6 1124
af209b0f
MD
1125static __inline void
1126hammer_wait_mem_record(hammer_record_t record)
1127{
1128 hammer_wait_mem_record_ident(record, "hmmwai");
1129}
1130
1131static __inline void
1132hammer_lock_ex(struct hammer_lock *lock)
1133{
1134 hammer_lock_ex_ident(lock, "hmrlck");
1135}
1136
bcac4bbb
MD
1137/*
1138 * Indicate that a B-Tree node is being modified.
1139 */
8cd0a023 1140static __inline void
36f82b23 1141hammer_modify_node_noundo(hammer_transaction_t trans, hammer_node_t node)
bf686dbe 1142{
36f82b23 1143 hammer_modify_buffer(trans, node->buffer, NULL, 0);
bf686dbe
MD
1144}
1145
1146static __inline void
36f82b23 1147hammer_modify_node_all(hammer_transaction_t trans, struct hammer_node *node)
8cd0a023 1148{
36f82b23
MD
1149 hammer_modify_buffer(trans, node->buffer,
1150 node->ondisk, sizeof(*node->ondisk));
427e5fc6
MD
1151}
1152
bf686dbe 1153static __inline void
36f82b23
MD
1154hammer_modify_node(hammer_transaction_t trans, hammer_node_t node,
1155 void *base, int len)
bf686dbe 1156{
19619882
MD
1157 hammer_crc_t *crcptr;
1158
bf686dbe
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1159 KKASSERT((char *)base >= (char *)node->ondisk &&
1160 (char *)base + len <=
1161 (char *)node->ondisk + sizeof(*node->ondisk));
36f82b23 1162 hammer_modify_buffer(trans, node->buffer, base, len);
19619882
MD
1163 crcptr = &node->ondisk->crc;
1164 hammer_modify_buffer(trans, node->buffer, crcptr, sizeof(hammer_crc_t));
1165 --node->buffer->io.modify_refs; /* only want one ref */
bf686dbe
MD
1166}
1167
bcac4bbb
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1168/*
1169 * Indicate that the specified modifications have been completed.
1170 *
1171 * Do not try to generate the crc here, it's very expensive to do and a
1172 * sequence of insertions or deletions can result in many calls to this
1173 * function on the same node.
1174 */
10a5d1ba
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1175static __inline void
1176hammer_modify_node_done(hammer_node_t node)
1177{
bcac4bbb
MD
1178 node->flags |= HAMMER_NODE_CRCGOOD;
1179 if ((node->flags & HAMMER_NODE_NEEDSCRC) == 0) {
1180 node->flags |= HAMMER_NODE_NEEDSCRC;
1181 node->buffer->io.gencrc = 1;
1182 hammer_ref_node(node);
1183 }
10a5d1ba
MD
1184 hammer_modify_buffer_done(node->buffer);
1185}
1186
e8599db1
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1187#define hammer_modify_volume_field(trans, vol, field) \
1188 hammer_modify_volume(trans, vol, &(vol)->ondisk->field, \
1189 sizeof((vol)->ondisk->field))
1190
c9b9e29d
MD
1191#define hammer_modify_node_field(trans, node, field) \
1192 hammer_modify_node(trans, node, &(node)->ondisk->field, \
1193 sizeof((node)->ondisk->field))
1194