HAMMER VFS - Take reserved space into account when reporting statvfs data
[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 *
44a83111 34 * $DragonFly: src/sys/vfs/hammer/hammer.h,v 1.130 2008/11/13 02:18:43 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>
895c1f85 52#include <sys/priv.h>
e63644f0 53#include <sys/stat.h>
427e5fc6 54#include <sys/globaldata.h>
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55#include <sys/lockf.h>
56#include <sys/buf.h>
8cd0a023 57#include <sys/queue.h>
bcac4bbb 58#include <sys/ktr.h>
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59#include <sys/globaldata.h>
60
61#include <sys/buf2.h>
855942b6 62#include <sys/signal2.h>
427e5fc6 63#include "hammer_disk.h"
8750964d 64#include "hammer_mount.h"
7dc57964 65#include "hammer_ioctl.h"
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66
67#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
68
69MALLOC_DECLARE(M_HAMMER);
70
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71/*
72 * Kernel trace
73 */
74#if !defined(KTR_HAMMER)
75#define KTR_HAMMER KTR_ALL
76#endif
77KTR_INFO_MASTER_EXTERN(hammer);
78
79/*
80 * Misc structures
81 */
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82struct hammer_mount;
83
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84/*
85 * Key structure used for custom RB tree inode lookups. This prototypes
86 * the function hammer_ino_rb_tree_RB_LOOKUP_INFO(root, info).
87 */
88typedef struct hammer_inode_info {
513ca7d7 89 int64_t obj_id; /* (key) object identifier */
8750964d 90 hammer_tid_t obj_asof; /* (key) snapshot transid or 0 */
ddfdf542 91 u_int32_t obj_localization; /* (key) pseudo-fs */
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92 union {
93 struct hammer_btree_leaf_elm *leaf;
94 } u;
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95} *hammer_inode_info_t;
96
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97typedef enum hammer_transaction_type {
98 HAMMER_TRANS_RO,
99 HAMMER_TRANS_STD,
100 HAMMER_TRANS_FLS
101} hammer_transaction_type_t;
102
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103/*
104 * HAMMER Transaction tracking
105 */
106struct hammer_transaction {
b84de5af 107 hammer_transaction_type_t type;
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108 struct hammer_mount *hmp;
109 hammer_tid_t tid;
ddfdf542 110 u_int64_t time;
dd94f1b1 111 u_int32_t time32;
2f85fa4d 112 int sync_lock_refs;
21fde338 113 int flags;
a89aec1b 114 struct hammer_volume *rootvol;
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115};
116
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117typedef struct hammer_transaction *hammer_transaction_t;
118
21fde338 119#define HAMMER_TRANSF_NEWINODE 0x0001
82010f9f 120#define HAMMER_TRANSF_DIDIO 0x0002
4c286c36 121#define HAMMER_TRANSF_CRCDOM 0x0004 /* EDOM on CRC error, less critical */
21fde338 122
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123/*
124 * HAMMER locks
125 */
427e5fc6 126struct hammer_lock {
0b075555 127 int refs; /* active references delay writes */
0b075555 128 int lockcount; /* lock count for exclusive/shared access */
427e5fc6 129 int wanted;
4a2796f3 130 int exwanted; /* number of threads waiting for ex lock */
427e5fc6 131 struct thread *locktd;
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132};
133
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134static __inline int
135hammer_islocked(struct hammer_lock *lock)
136{
8cd0a023 137 return(lock->lockcount != 0);
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138}
139
140static __inline int
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141hammer_isactive(struct hammer_lock *lock)
142{
143 return(lock->refs != 0);
144}
145
146static __inline int
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147hammer_islastref(struct hammer_lock *lock)
148{
149 return(lock->refs == 1);
150}
c60bb2c5 151
8750964d 152/*
7aa3b8a6 153 * Return if we specifically own the lock exclusively.
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154 */
155static __inline int
7aa3b8a6 156hammer_lock_excl_owned(struct hammer_lock *lock, thread_t td)
6a37e7e4 157{
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158 if (lock->lockcount > 0 && lock->locktd == td)
159 return(1);
160 return(0);
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161}
162
163/*
1f07f686 164 * Flush state, used by various structures
ec4e8497 165 */
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166typedef enum hammer_inode_state {
167 HAMMER_FST_IDLE,
168 HAMMER_FST_SETUP,
169 HAMMER_FST_FLUSH
170} hammer_inode_state_t;
ec4e8497 171
1f07f686 172TAILQ_HEAD(hammer_record_list, hammer_record);
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173
174/*
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175 * Pseudo-filesystem extended data tracking
176 */
177struct hammer_pfs_rb_tree;
178struct hammer_pseudofs_inmem;
179RB_HEAD(hammer_pfs_rb_tree, hammer_pseudofs_inmem);
180RB_PROTOTYPE2(hammer_pfs_rb_tree, hammer_pseudofs_inmem, rb_node,
181 hammer_pfs_rb_compare, u_int32_t);
182
183struct hammer_pseudofs_inmem {
184 RB_ENTRY(hammer_pseudofs_inmem) rb_node;
185 struct hammer_lock lock;
186 u_int32_t localization;
ea434b6f 187 hammer_tid_t create_tid;
842e7a70 188 int flags;
a56cb012 189 udev_t fsid_udev;
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190 struct hammer_pseudofs_data pfsd;
191};
192
193typedef struct hammer_pseudofs_inmem *hammer_pseudofs_inmem_t;
194
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195#define HAMMER_PFSM_DELETED 0x0001
196
5fa5c92f 197/*
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198 * Cache object ids. A fixed number of objid cache structures are
199 * created to reserve object id's for newly created files in multiples
200 * of 100,000, localized to a particular directory, and recycled as
201 * needed. This allows parallel create operations in different
202 * directories to retain fairly localized object ids which in turn
203 * improves reblocking performance and layout.
204 */
bf3b416b 205#define OBJID_CACHE_SIZE 1024
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206#define OBJID_CACHE_BULK_BITS 10 /* 10 bits (1024) */
207#define OBJID_CACHE_BULK (32 * 32) /* two level (1024) */
208#define OBJID_CACHE_BULK_MASK (OBJID_CACHE_BULK - 1)
209#define OBJID_CACHE_BULK_MASK64 ((u_int64_t)(OBJID_CACHE_BULK - 1))
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210
211typedef struct hammer_objid_cache {
212 TAILQ_ENTRY(hammer_objid_cache) entry;
213 struct hammer_inode *dip;
5a64efa1 214 hammer_tid_t base_tid;
0729c8c8 215 int count;
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216 u_int32_t bm0;
217 u_int32_t bm1[32];
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218} *hammer_objid_cache_t;
219
220/*
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221 * Associate an inode with a B-Tree node to cache search start positions
222 */
223typedef struct hammer_node_cache {
7a61b85d 224 TAILQ_ENTRY(hammer_node_cache) entry;
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225 struct hammer_node *node;
226 struct hammer_inode *ip;
227} *hammer_node_cache_t;
228
229TAILQ_HEAD(hammer_node_cache_list, hammer_node_cache);
230
231/*
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232 * Structure used to organize flush groups. Flush groups must be
233 * organized into chunks in order to avoid blowing out the UNDO FIFO.
234 * Without this a 'sync' could end up flushing 50,000 inodes in a single
235 * transaction.
236 */
237struct hammer_flush_group {
238 TAILQ_ENTRY(hammer_flush_group) flush_entry;
239 TAILQ_HEAD(, hammer_inode) flush_list;
38b9080b 240 int unused01; /* inode load */
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241 int total_count; /* record load */
242 int running; /* group is running */
243 int closed;
244 int refs;
245};
246
247typedef struct hammer_flush_group *hammer_flush_group_t;
248
249TAILQ_HEAD(hammer_flush_group_list, hammer_flush_group);
250
251/*
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252 * Structure used to represent an inode in-memory.
253 *
254 * The record and data associated with an inode may be out of sync with
255 * the disk (xDIRTY flags), or not even on the disk at all (ONDISK flag
256 * clear).
257 *
258 * An inode may also hold a cache of unsynchronized records, used for
259 * database and directories only. Unsynchronized regular file data is
260 * stored in the buffer cache.
261 *
262 * NOTE: A file which is created and destroyed within the initial
263 * synchronization period can wind up not doing any disk I/O at all.
264 *
265 * Finally, an inode may cache numerous disk-referencing B-Tree cursors.
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266 */
267struct hammer_ino_rb_tree;
268struct hammer_inode;
269RB_HEAD(hammer_ino_rb_tree, hammer_inode);
270RB_PROTOTYPEX(hammer_ino_rb_tree, INFO, hammer_inode, rb_node,
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271 hammer_ino_rb_compare, hammer_inode_info_t);
272
273struct hammer_rec_rb_tree;
274struct hammer_record;
275RB_HEAD(hammer_rec_rb_tree, hammer_record);
276RB_PROTOTYPEX(hammer_rec_rb_tree, INFO, hammer_record, rb_node,
0832c9bb 277 hammer_rec_rb_compare, hammer_btree_leaf_elm_t);
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278
279TAILQ_HEAD(hammer_node_list, hammer_node);
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280
281struct hammer_inode {
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282 RB_ENTRY(hammer_inode) rb_node;
283 hammer_inode_state_t flush_state;
7a61b85d 284 hammer_flush_group_t flush_group;
059819e3 285 TAILQ_ENTRY(hammer_inode) flush_entry;
1f07f686 286 struct hammer_record_list target_list; /* target of dependant recs */
adf01747 287 int64_t obj_id; /* (key) object identifier */
b84de5af 288 hammer_tid_t obj_asof; /* (key) snapshot or 0 */
ddfdf542 289 u_int32_t obj_localization; /* (key) pseudo-fs */
b84de5af 290 struct hammer_mount *hmp;
0729c8c8 291 hammer_objid_cache_t objid_cache;
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292 int flags;
293 int error; /* flush error */
294 int cursor_ip_refs; /* sanity */
47637bff 295 int rsv_recs;
b84de5af 296 struct vnode *vp;
5fa5c92f 297 hammer_pseudofs_inmem_t pfsm;
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298 struct lockf advlock;
299 struct hammer_lock lock; /* sync copy interlock */
b84de5af 300 off_t trunc_off;
11ad5ade 301 struct hammer_btree_leaf_elm ino_leaf; /* in-memory cache */
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302 struct hammer_inode_data ino_data; /* in-memory cache */
303 struct hammer_rec_rb_tree rec_tree; /* in-memory cache */
3214ade6 304 int rec_generation;
39d8fd63 305 struct hammer_node_cache cache[4]; /* search initiate cache */
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306
307 /*
308 * When a demark is created to synchronize an inode to
309 * disk, certain fields are copied so the front-end VOPs
310 * can continue to run in parallel with the synchronization
311 * occuring in the background.
312 */
313 int sync_flags; /* to-sync flags cache */
314 off_t sync_trunc_off; /* to-sync truncation */
a9d52b76 315 off_t save_trunc_off; /* write optimization */
11ad5ade 316 struct hammer_btree_leaf_elm sync_ino_leaf; /* to-sync cache */
b84de5af 317 struct hammer_inode_data sync_ino_data; /* to-sync cache */
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318};
319
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320typedef struct hammer_inode *hammer_inode_t;
321
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322#define VTOI(vp) ((struct hammer_inode *)(vp)->v_data)
323
8cd0a023 324#define HAMMER_INODE_DDIRTY 0x0001 /* in-memory ino_data is dirty */
ddfdf542 325 /* (not including atime/mtime) */
e63644f0 326#define HAMMER_INODE_RSV_INODES 0x0002 /* hmp->rsv_inodes bumped */
7b6ccb11 327#define HAMMER_INODE_CONN_DOWN 0x0004 /* include in downward recursion */
1f07f686 328#define HAMMER_INODE_XDIRTY 0x0008 /* in-memory records */
8cd0a023 329#define HAMMER_INODE_ONDISK 0x0010 /* inode is on-disk (else not yet) */
a89aec1b 330#define HAMMER_INODE_FLUSH 0x0020 /* flush on last ref */
869e8f55 331#define HAMMER_INODE_DELETED 0x0080 /* inode delete (backend) */
76376933 332#define HAMMER_INODE_DELONDISK 0x0100 /* delete synchronized to disk */
d113fda1 333#define HAMMER_INODE_RO 0x0200 /* read-only (because of as-of) */
e8599db1 334#define HAMMER_INODE_VHELD 0x0400 /* vnode held on sync */
0a72edae 335#define HAMMER_INODE_DONDISK 0x0800 /* data records may be on disk */
f3b0f382 336#define HAMMER_INODE_BUFS 0x1000 /* dirty high level bps present */
f153644d 337#define HAMMER_INODE_REFLUSH 0x2000 /* flush on dependancy / reflush */
9f5097dc 338#define HAMMER_INODE_RECLAIM 0x4000 /* trying to reclaim */
059819e3 339#define HAMMER_INODE_FLUSHW 0x8000 /* Someone waiting for flush */
8cd0a023 340
b84de5af 341#define HAMMER_INODE_TRUNCATED 0x00010000
869e8f55 342#define HAMMER_INODE_DELETING 0x00020000 /* inode delete request (frontend)*/
4e17f465 343#define HAMMER_INODE_RESIGNAL 0x00040000 /* re-signal on re-flush */
ddfdf542 344#define HAMMER_INODE_ATIME 0x00100000 /* in-memory atime modified */
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345#define HAMMER_INODE_MTIME 0x00200000 /* in-memory mtime modified */
346#define HAMMER_INODE_WOULDBLOCK 0x00400000 /* re-issue to new flush group */
4c286c36 347#define HAMMER_INODE_DUMMY 0x00800000 /* dummy inode covering bad file */
b84de5af 348
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349#define HAMMER_INODE_MODMASK (HAMMER_INODE_DDIRTY| \
350 HAMMER_INODE_XDIRTY|HAMMER_INODE_BUFS| \
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351 HAMMER_INODE_ATIME|HAMMER_INODE_MTIME| \
352 HAMMER_INODE_TRUNCATED|HAMMER_INODE_DELETING)
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353
354#define HAMMER_INODE_MODMASK_NOXDIRTY \
355 (HAMMER_INODE_MODMASK & ~HAMMER_INODE_XDIRTY)
0b075555 356
cb51be26 357#define HAMMER_FLUSH_GROUP_SIZE 64
66325755 358
f90dde4c 359#define HAMMER_FLUSH_SIGNAL 0x0001
4e17f465 360#define HAMMER_FLUSH_RECURSION 0x0002
f90dde4c 361
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362/*
363 * Used by the inode reclaim code to pipeline reclaims and avoid
364 * blowing out kernel memory or letting the flusher get too far
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365 * behind. The reclaim wakes up when count reaches 0 or the
366 * timer expires.
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367 */
368struct hammer_reclaim {
369 TAILQ_ENTRY(hammer_reclaim) entry;
82010f9f 370 int count;
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371};
372
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373#define HAMMER_RECLAIM_FLUSH 2000
374#define HAMMER_RECLAIM_WAIT 4000
9f5097dc 375
8750964d 376/*
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377 * Structure used to represent an unsynchronized record in-memory. These
378 * records typically represent directory entries. Only non-historical
379 * records are kept in-memory.
380 *
381 * Records are organized as a per-inode RB-Tree. If the inode is not
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382 * on disk then neither are any records and the in-memory record tree
383 * represents the entire contents of the inode. If the inode is on disk
384 * then the on-disk B-Tree is scanned in parallel with the in-memory
385 * RB-Tree to synthesize the current state of the file.
386 *
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387 * Records are also used to enforce the ordering of directory create/delete
388 * operations. A new inode will not be flushed to disk unless its related
389 * directory entry is also being flushed at the same time. A directory entry
390 * will not be removed unless its related inode is also being removed at the
391 * same time.
8750964d 392 */
1f07f686 393typedef enum hammer_record_type {
e8599db1 394 HAMMER_MEM_RECORD_GENERAL, /* misc record */
930bf163 395 HAMMER_MEM_RECORD_INODE, /* inode record */
1f07f686 396 HAMMER_MEM_RECORD_ADD, /* positive memory cache record */
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397 HAMMER_MEM_RECORD_DEL, /* negative delete-on-disk record */
398 HAMMER_MEM_RECORD_DATA /* bulk-data record w/on-disk ref */
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399} hammer_record_type_t;
400
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401struct hammer_record {
402 RB_ENTRY(hammer_record) rb_node;
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403 TAILQ_ENTRY(hammer_record) target_entry;
404 hammer_inode_state_t flush_state;
7a61b85d 405 hammer_flush_group_t flush_group;
1f07f686 406 hammer_record_type_t type;
a89aec1b 407 struct hammer_lock lock;
0832c9bb 408 struct hammer_reserve *resv;
8cd0a023 409 struct hammer_inode *ip;
1f07f686 410 struct hammer_inode *target_ip;
11ad5ade 411 struct hammer_btree_leaf_elm leaf;
8cd0a023 412 union hammer_data_ondisk *data;
8cd0a023 413 int flags;
e469566b 414 hammer_off_t zone2_offset; /* direct-write only */
8cd0a023 415};
8750964d 416
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417typedef struct hammer_record *hammer_record_t;
418
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419/*
420 * Record flags. Note that FE can only be set by the frontend if the
421 * record has not been interlocked by the backend w/ BE.
422 */
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423#define HAMMER_RECF_ALLOCDATA 0x0001
424#define HAMMER_RECF_ONRBTREE 0x0002
b84de5af 425#define HAMMER_RECF_DELETED_FE 0x0004 /* deleted (frontend) */
d36ec43b 426#define HAMMER_RECF_DELETED_BE 0x0008 /* deleted (backend) */
1b0ab2c3 427#define HAMMER_RECF_COMMITTED 0x0010 /* committed to the B-Tree */
d36ec43b 428#define HAMMER_RECF_INTERLOCK_BE 0x0020 /* backend interlock */
0832c9bb 429#define HAMMER_RECF_WANTED 0x0040 /* wanted by the frontend */
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430#define HAMMER_RECF_CONVERT_DELETE 0x0100 /* special case */
431#define HAMMER_RECF_DIRECT_IO 0x0200 /* related direct I/O running*/
432#define HAMMER_RECF_DIRECT_WAIT 0x0400 /* related direct I/O running*/
e469566b 433#define HAMMER_RECF_DIRECT_INVAL 0x0800 /* buffer alias invalidation */
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434
435/*
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436 * hammer_delete_at_cursor() flags
437 */
438#define HAMMER_DELETE_ADJUST 0x0001
439#define HAMMER_DELETE_DESTROY 0x0002
440
441/*
47197d71 442 * In-memory structures representing on-disk structures.
8cd0a023 443 */
8750964d 444struct hammer_volume;
427e5fc6 445struct hammer_buffer;
8cd0a023 446struct hammer_node;
e8599db1 447struct hammer_undo;
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448struct hammer_reserve;
449
8750964d 450RB_HEAD(hammer_vol_rb_tree, hammer_volume);
427e5fc6 451RB_HEAD(hammer_buf_rb_tree, hammer_buffer);
8cd0a023 452RB_HEAD(hammer_nod_rb_tree, hammer_node);
e8599db1 453RB_HEAD(hammer_und_rb_tree, hammer_undo);
0832c9bb 454RB_HEAD(hammer_res_rb_tree, hammer_reserve);
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455
456RB_PROTOTYPE2(hammer_vol_rb_tree, hammer_volume, rb_node,
457 hammer_vol_rb_compare, int32_t);
427e5fc6 458RB_PROTOTYPE2(hammer_buf_rb_tree, hammer_buffer, rb_node,
47197d71 459 hammer_buf_rb_compare, hammer_off_t);
8cd0a023 460RB_PROTOTYPE2(hammer_nod_rb_tree, hammer_node, rb_node,
47197d71 461 hammer_nod_rb_compare, hammer_off_t);
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462RB_PROTOTYPE2(hammer_und_rb_tree, hammer_undo, rb_node,
463 hammer_und_rb_compare, hammer_off_t);
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464RB_PROTOTYPE2(hammer_res_rb_tree, hammer_reserve, rb_node,
465 hammer_res_rb_compare, hammer_off_t);
8750964d 466
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467/*
468 * IO management - embedded at the head of various in-memory structures
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469 *
470 * VOLUME - hammer_volume containing meta-data
471 * META_BUFFER - hammer_buffer containing meta-data
472 * DATA_BUFFER - hammer_buffer containing pure-data
473 *
474 * Dirty volume headers and dirty meta-data buffers are locked until the
475 * flusher can sequence them out. Dirty pure-data buffers can be written.
476 * Clean buffers can be passively released.
66325755 477 */
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478typedef enum hammer_io_type {
479 HAMMER_STRUCTURE_VOLUME,
480 HAMMER_STRUCTURE_META_BUFFER,
481 HAMMER_STRUCTURE_UNDO_BUFFER,
482 HAMMER_STRUCTURE_DATA_BUFFER
483} hammer_io_type_t;
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484
485union hammer_io_structure;
055f5ff8 486struct hammer_io;
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487
488struct worklist {
489 LIST_ENTRY(worklist) node;
490};
491
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492TAILQ_HEAD(hammer_io_list, hammer_io);
493typedef struct hammer_io_list *hammer_io_list_t;
055f5ff8 494
66325755 495struct hammer_io {
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496 struct worklist worklist;
497 struct hammer_lock lock;
498 enum hammer_io_type type;
499 struct hammer_mount *hmp;
748efb59 500 struct hammer_volume *volume;
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501 TAILQ_ENTRY(hammer_io) mod_entry; /* list entry if modified */
502 hammer_io_list_t mod_list;
503 struct buf *bp;
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504 int64_t offset; /* zone-2 offset */
505 int bytes; /* buffer cache buffer size */
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506 int loading; /* loading/unloading interlock */
507 int modify_refs;
508
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509 u_int modified : 1; /* bp's data was modified */
510 u_int released : 1; /* bp released (w/ B_LOCKED set) */
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511 u_int running : 1; /* bp write IO in progress */
512 u_int waiting : 1; /* someone is waiting on us */
b33e2cc0 513 u_int validated : 1; /* ondisk has been validated */
b58c6388 514 u_int waitdep : 1; /* flush waits for dependancies */
51c35492 515 u_int recovered : 1; /* has recovery ref */
9f5097dc 516 u_int waitmod : 1; /* waiting for modify_refs */
cebe9493 517 u_int reclaim : 1; /* reclaim requested */
bcac4bbb 518 u_int gencrc : 1; /* crc needs to be generated */
cdb6e4e6 519 u_int ioerror : 1; /* abort on io-error */
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520};
521
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522typedef struct hammer_io *hammer_io_t;
523
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524#define HAMMER_CLUSTER_SIZE (64 * 1024)
525#if HAMMER_CLUSTER_SIZE > MAXBSIZE
526#undef HAMMER_CLUSTER_SIZE
527#define HAMMER_CLUSTER_SIZE MAXBSIZE
528#endif
529#define HAMMER_CLUSTER_BUFS (HAMMER_CLUSTER_SIZE / HAMMER_BUFSIZE)
530
66325755 531/*
8cd0a023 532 * In-memory volume representing on-disk buffer
66325755 533 */
8750964d 534struct hammer_volume {
66325755 535 struct hammer_io io;
8750964d 536 RB_ENTRY(hammer_volume) rb_node;
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537 struct hammer_volume_ondisk *ondisk;
538 int32_t vol_no;
fbc6e32a 539 int64_t nblocks; /* note: special calculation for statfs */
47197d71 540 int64_t buffer_base; /* base offset of buffer 0 */
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541 hammer_off_t maxbuf_off; /* Maximum buffer offset (zone-2) */
542 hammer_off_t maxraw_off; /* Maximum raw offset for device */
c60bb2c5 543 char *vol_name;
8750964d 544 struct vnode *devvp;
427e5fc6 545 int vol_flags;
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546};
547
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548typedef struct hammer_volume *hammer_volume_t;
549
66325755 550/*
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551 * In-memory buffer (other then volume, super-cluster, or cluster),
552 * representing an on-disk buffer.
66325755 553 */
427e5fc6 554struct hammer_buffer {
66325755 555 struct hammer_io io;
427e5fc6 556 RB_ENTRY(hammer_buffer) rb_node;
47197d71 557 void *ondisk;
34d829f7 558 hammer_off_t zoneX_offset;
0832c9bb 559 hammer_off_t zone2_offset;
cebe9493 560 struct hammer_reserve *resv;
8cd0a023 561 struct hammer_node_list clist;
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562};
563
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564typedef struct hammer_buffer *hammer_buffer_t;
565
566/*
567 * In-memory B-Tree node, representing an on-disk B-Tree node.
568 *
569 * This is a hang-on structure which is backed by a hammer_buffer,
570 * indexed by a hammer_cluster, and used for fine-grained locking of
571 * B-Tree nodes in order to properly control lock ordering. A hammer_buffer
572 * can contain multiple nodes representing wildly disassociated portions
573 * of the B-Tree so locking cannot be done on a buffer-by-buffer basis.
574 *
575 * This structure uses a cluster-relative index to reduce the number
576 * of layers required to access it, and also because all on-disk B-Tree
577 * references are cluster-relative offsets.
578 */
579struct hammer_node {
580 struct hammer_lock lock; /* node-by-node lock */
581 TAILQ_ENTRY(hammer_node) entry; /* per-buffer linkage */
582 RB_ENTRY(hammer_node) rb_node; /* per-cluster linkage */
47197d71 583 hammer_off_t node_offset; /* full offset spec */
40043e7f 584 struct hammer_mount *hmp;
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585 struct hammer_buffer *buffer; /* backing buffer */
586 hammer_node_ondisk_t ondisk; /* ptr to on-disk structure */
b3bad96f 587 TAILQ_HEAD(, hammer_cursor) cursor_list; /* deadlock recovery */
bcac4bbb 588 struct hammer_node_cache_list cache_list; /* passive caches */
b3deaf57 589 int flags;
740d8317 590 int loading; /* load interlock */
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591};
592
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593#define HAMMER_NODE_DELETED 0x0001
594#define HAMMER_NODE_FLUSH 0x0002
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595#define HAMMER_NODE_CRCGOOD 0x0004
596#define HAMMER_NODE_NEEDSCRC 0x0008
c82af904 597#define HAMMER_NODE_NEEDSMIRROR 0x0010
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598#define HAMMER_NODE_CRCBAD 0x0020
599
600#define HAMMER_NODE_CRCANY (HAMMER_NODE_CRCGOOD | HAMMER_NODE_CRCBAD)
b3deaf57 601
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602typedef struct hammer_node *hammer_node_t;
603
604/*
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605 * List of locked nodes. This structure is used to lock potentially large
606 * numbers of nodes as an aid for complex B-Tree operations.
b33e2cc0 607 */
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608struct hammer_node_lock;
609TAILQ_HEAD(hammer_node_lock_list, hammer_node_lock);
610
611struct hammer_node_lock {
612 TAILQ_ENTRY(hammer_node_lock) entry;
613 struct hammer_node_lock_list list;
614 struct hammer_node_lock *parent;
b33e2cc0 615 hammer_node_t node;
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616 hammer_node_ondisk_t copy; /* copy of on-disk data */
617 int index; /* index of this node in parent */
618 int count; /* count children */
619 int flags;
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620};
621
1775b6a0 622typedef struct hammer_node_lock *hammer_node_lock_t;
b33e2cc0 623
1775b6a0 624#define HAMMER_NODE_LOCK_UPDATED 0x0001
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625
626/*
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627 * Common I/O management structure - embedded in in-memory structures
628 * which are backed by filesystem buffers.
629 */
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630union hammer_io_structure {
631 struct hammer_io io;
632 struct hammer_volume volume;
66325755 633 struct hammer_buffer buffer;
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634};
635
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636typedef union hammer_io_structure *hammer_io_structure_t;
637
bf686dbe 638/*
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639 * The reserve structure prevents the blockmap from allocating
640 * out of a reserved bigblock. Such reservations are used by
641 * the direct-write mechanism.
642 *
643 * The structure is also used to hold off on reallocations of
644 * big blocks from the freemap until flush dependancies have
645 * been dealt with.
646 */
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647struct hammer_reserve {
648 RB_ENTRY(hammer_reserve) rb_node;
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649 TAILQ_ENTRY(hammer_reserve) delay_entry;
650 int flush_group;
cb51be26 651 int flags;
0832c9bb 652 int refs;
cb51be26 653 int zone;
df301614 654 int append_off;
cebe9493 655 hammer_off_t zone_offset;
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656};
657
658typedef struct hammer_reserve *hammer_reserve_t;
659
cb51be26 660#define HAMMER_RESF_ONDELAY 0x0001
5e435c92 661#define HAMMER_RESF_LAYER2FREE 0x0002
cb51be26 662
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663#include "hammer_cursor.h"
664
8750964d 665/*
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666 * The undo structure tracks recent undos to avoid laying down duplicate
667 * undos within a flush group, saving us a significant amount of overhead.
668 *
669 * This is strictly a heuristic.
e8599db1 670 */
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671#define HAMMER_MAX_UNDOS 1024
672#define HAMMER_MAX_FLUSHERS 4
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673
674struct hammer_undo {
675 RB_ENTRY(hammer_undo) rb_node;
676 TAILQ_ENTRY(hammer_undo) lru_entry;
677 hammer_off_t offset;
678 int bytes;
679};
680
681typedef struct hammer_undo *hammer_undo_t;
682
af209b0f 683struct hammer_flusher_info;
7a61b85d 684TAILQ_HEAD(hammer_flusher_info_list, hammer_flusher_info);
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685
686struct hammer_flusher {
687 int signal; /* flusher thread sequencer */
688 int act; /* currently active flush group */
689 int done; /* set to act when complete */
690 int next; /* next flush group */
691 int group_lock; /* lock sequencing of the next flush */
692 int exiting; /* request master exit */
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693 thread_t td; /* master flusher thread */
694 hammer_tid_t tid; /* last flushed transaction id */
695 int finalize_want; /* serialize finalization */
696 struct hammer_lock finalize_lock; /* serialize finalization */
697 struct hammer_transaction trans; /* shared transaction */
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698 struct hammer_flusher_info_list run_list;
699 struct hammer_flusher_info_list ready_list;
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700};
701
702/*
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703 * Internal hammer mount data structure
704 */
705struct hammer_mount {
706 struct mount *mp;
27ea2398 707 /*struct vnode *rootvp;*/
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708 struct hammer_ino_rb_tree rb_inos_root;
709 struct hammer_vol_rb_tree rb_vols_root;
40043e7f 710 struct hammer_nod_rb_tree rb_nods_root;
e8599db1 711 struct hammer_und_rb_tree rb_undo_root;
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712 struct hammer_res_rb_tree rb_resv_root;
713 struct hammer_buf_rb_tree rb_bufs_root;
5fa5c92f 714 struct hammer_pfs_rb_tree rb_pfsm_root;
8750964d 715 struct hammer_volume *rootvol;
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716 struct hammer_base_elm root_btree_beg;
717 struct hammer_base_elm root_btree_end;
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718
719 struct malloc_type *m_misc;
720 struct malloc_type *m_inodes;
721
cdb6e4e6 722 int flags; /* HAMMER_MOUNT_xxx flags */
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723 int hflags;
724 int ronly;
725 int nvolumes;
d26d0ae9 726 int volume_iterator;
732a1697 727 int master_id; /* -1 or 0-15 - clustering and mirroring */
44a83111 728 int version; /* hammer filesystem version to use */
e63644f0 729 int rsv_inodes; /* reserved space due to dirty inodes */
a7e9bef1 730 int64_t rsv_databytes; /* reserved space due to record data */
e63644f0 731 int rsv_recs; /* reserved space due to dirty records */
a7e9bef1 732 int rsv_fromdelay; /* bigblocks reserved due to flush delay */
7a61b85d 733 int undo_rec_limit; /* based on size of undo area */
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734 int last_newrecords;
735 int count_newrecords;
da2da375 736
9f5097dc
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737 int inode_reclaims; /* inodes pending reclaim by flusher */
738 int count_inodes; /* total number of inodes */
af209b0f 739 int count_iqueued; /* inodes queued to flusher */
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740
741 struct hammer_flusher flusher;
742
855942b6 743 u_int check_interrupt;
8750964d 744 uuid_t fsid;
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745 struct hammer_io_list volu_list; /* dirty undo buffers */
746 struct hammer_io_list undo_list; /* dirty undo buffers */
747 struct hammer_io_list data_list; /* dirty data buffers */
0832c9bb 748 struct hammer_io_list alt_data_list; /* dirty data buffers */
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749 struct hammer_io_list meta_list; /* dirty meta bufs */
750 struct hammer_io_list lose_list; /* loose buffers */
f5a07a7a
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751 int locked_dirty_space; /* meta/volu count */
752 int io_running_space;
0729c8c8 753 int objid_cache_count;
cdb6e4e6
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754 int error; /* critical I/O error */
755 struct krate krate; /* rate limited kprintf */
ddfdf542 756 hammer_tid_t asof; /* snapshot mount */
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757 hammer_tid_t next_tid;
758 hammer_tid_t flush_tid1; /* flusher tid sequencing */
759 hammer_tid_t flush_tid2; /* flusher tid sequencing */
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760 int64_t copy_stat_freebigblocks; /* number of free bigblocks */
761
513ca7d7 762 struct netexport export;
9480ff55 763 struct hammer_lock sync_lock;
c9b9e29d 764 struct hammer_lock free_lock;
d99d6bf5
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765 struct hammer_lock undo_lock;
766 struct hammer_lock blkmap_lock;
0729c8c8 767 struct hammer_blockmap blockmap[HAMMER_MAX_ZONES];
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768 struct hammer_undo undos[HAMMER_MAX_UNDOS];
769 int undo_alloc;
770 TAILQ_HEAD(, hammer_undo) undo_lru_list;
cebe9493 771 TAILQ_HEAD(, hammer_reserve) delay_list;
7a61b85d 772 struct hammer_flush_group_list flush_group_list;
7b6ccb11 773 hammer_flush_group_t next_flush_group;
0729c8c8 774 TAILQ_HEAD(, hammer_objid_cache) objid_cache_list;
7bc5b8c2 775 TAILQ_HEAD(, hammer_reclaim) reclaim_list;
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776};
777
8cd0a023 778typedef struct hammer_mount *hammer_mount_t;
8750964d 779
cdb6e4e6 780#define HAMMER_MOUNT_CRITICAL_ERROR 0x0001
82010f9f 781#define HAMMER_MOUNT_FLUSH_RECOVERY 0x0002
9f5097dc 782
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783struct hammer_sync_info {
784 int error;
785 int waitfor;
786};
787
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788#endif
789
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790/*
791 * checkspace slop (8MB chunks), higher numbers are more conservative.
792 */
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793#define HAMMER_CHKSPC_REBLOCK 25
794#define HAMMER_CHKSPC_MIRROR 20
795#define HAMMER_CHKSPC_WRITE 20
796#define HAMMER_CHKSPC_CREATE 20
797#define HAMMER_CHKSPC_REMOVE 10
7b6ccb11 798#define HAMMER_CHKSPC_EMERGENCY 0
a7e9bef1 799
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800#if defined(_KERNEL)
801
802extern struct vop_ops hammer_vnode_vops;
7a04d74f
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803extern struct vop_ops hammer_spec_vops;
804extern struct vop_ops hammer_fifo_vops;
66325755 805extern struct bio_ops hammer_bioops;
427e5fc6 806
2f85fa4d 807extern int hammer_debug_io;
d5ef456e 808extern int hammer_debug_general;
77062c8a 809extern int hammer_debug_debug;
e8599db1 810extern int hammer_debug_inode;
7d683b0f 811extern int hammer_debug_locks;
b3deaf57 812extern int hammer_debug_btree;
d113fda1 813extern int hammer_debug_tid;
b33e2cc0 814extern int hammer_debug_recover;
46fe7ae1 815extern int hammer_debug_recover_faults;
1b0ab2c3 816extern int hammer_cluster_enable;
7a61b85d 817extern int hammer_count_fsyncs;
b3deaf57 818extern int hammer_count_inodes;
af209b0f 819extern int hammer_count_iqueued;
9f5097dc 820extern int hammer_count_reclaiming;
b3deaf57
MD
821extern int hammer_count_records;
822extern int hammer_count_record_datas;
823extern int hammer_count_volumes;
b3deaf57
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824extern int hammer_count_buffers;
825extern int hammer_count_nodes;
a7e9bef1 826extern int64_t hammer_count_extra_space_used;
cb51be26
MD
827extern int64_t hammer_stats_btree_lookups;
828extern int64_t hammer_stats_btree_searches;
829extern int64_t hammer_stats_btree_inserts;
830extern int64_t hammer_stats_btree_deletes;
831extern int64_t hammer_stats_btree_elements;
832extern int64_t hammer_stats_btree_splits;
833extern int64_t hammer_stats_btree_iterations;
39d8fd63 834extern int64_t hammer_stats_btree_root_iterations;
cb51be26 835extern int64_t hammer_stats_record_iterations;
ce0138a6
MD
836extern int64_t hammer_stats_file_read;
837extern int64_t hammer_stats_file_write;
838extern int64_t hammer_stats_file_iopsr;
839extern int64_t hammer_stats_file_iopsw;
840extern int64_t hammer_stats_disk_read;
841extern int64_t hammer_stats_disk_write;
842extern int64_t hammer_stats_inode_flushes;
843extern int64_t hammer_stats_commits;
f5a07a7a 844extern int hammer_count_dirtybufspace;
a99b9ea2 845extern int hammer_count_refedbufs;
0832c9bb 846extern int hammer_count_reservations;
a99b9ea2
MD
847extern int hammer_count_io_running_read;
848extern int hammer_count_io_running_write;
849extern int hammer_count_io_locked;
f5a07a7a 850extern int hammer_limit_dirtybufspace;
47637bff 851extern int hammer_limit_recs;
1f07f686 852extern int hammer_bio_count;
cb51be26 853extern int hammer_verify_zone;
1b0ab2c3 854extern int hammer_verify_data;
cb51be26 855extern int hammer_write_mode;
21fde338 856extern int hammer_autoflush;
7d683b0f 857extern int64_t hammer_contention_count;
b3deaf57 858
cdb6e4e6
MD
859void hammer_critical_error(hammer_mount_t hmp, hammer_inode_t ip,
860 int error, const char *msg);
8750964d
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861int hammer_vop_inactive(struct vop_inactive_args *);
862int hammer_vop_reclaim(struct vop_reclaim_args *);
e8599db1 863int hammer_get_vnode(struct hammer_inode *ip, struct vnode **vpp);
36f82b23 864struct hammer_inode *hammer_get_inode(hammer_transaction_t trans,
adf01747 865 hammer_inode_t dip, int64_t obj_id,
ddfdf542
MD
866 hammer_tid_t asof, u_int32_t localization,
867 int flags, int *errorp);
4c286c36
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868struct hammer_inode *hammer_get_dummy_inode(hammer_transaction_t trans,
869 hammer_inode_t dip, int64_t obj_id,
870 hammer_tid_t asof, u_int32_t localization,
871 int flags, int *errorp);
39d8fd63
MD
872struct hammer_inode *hammer_find_inode(hammer_transaction_t trans,
873 int64_t obj_id, hammer_tid_t asof,
874 u_int32_t localization);
43c665ae
MD
875void hammer_scan_inode_snapshots(hammer_mount_t hmp,
876 hammer_inode_info_t iinfo,
877 int (*callback)(hammer_inode_t ip, void *data),
878 void *data);
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879void hammer_put_inode(struct hammer_inode *ip);
880void hammer_put_inode_ref(struct hammer_inode *ip);
4a2796f3 881void hammer_inode_waitreclaims(hammer_mount_t hmp);
82010f9f 882void hammer_inode_waithard(hammer_mount_t hmp);
66325755 883
8cd0a023 884int hammer_unload_volume(hammer_volume_t volume, void *data __unused);
51c35492
MD
885int hammer_adjust_volume_mode(hammer_volume_t volume, void *data __unused);
886
a89aec1b 887int hammer_unload_buffer(hammer_buffer_t buffer, void *data __unused);
7c19b529
MN
888int hammer_install_volume(hammer_mount_t hmp, const char *volname,
889 struct vnode *devvp);
1b0ab2c3 890int hammer_mountcheck_volumes(hammer_mount_t hmp);
8cd0a023 891
e469566b 892int hammer_mem_add(hammer_record_t record);
45a014dc 893int hammer_ip_lookup(hammer_cursor_t cursor);
4e17f465 894int hammer_ip_first(hammer_cursor_t cursor);
a89aec1b 895int hammer_ip_next(hammer_cursor_t cursor);
8cd0a023 896int hammer_ip_resolve_data(hammer_cursor_t cursor);
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897int hammer_ip_delete_record(hammer_cursor_t cursor, hammer_inode_t ip,
898 hammer_tid_t tid);
602c6cb8 899int hammer_delete_at_cursor(hammer_cursor_t cursor, int delete_flags,
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MD
900 hammer_tid_t delete_tid, u_int32_t delete_ts,
901 int track, int64_t *stat_bytes);
b3deaf57 902int hammer_ip_check_directory_empty(hammer_transaction_t trans,
98f7132d 903 hammer_inode_t ip);
fbc6e32a 904int hammer_sync_hmp(hammer_mount_t hmp, int waitfor);
f36a9737
MD
905int hammer_queue_inodes_flusher(hammer_mount_t hmp, int waitfor);
906
8cd0a023 907hammer_record_t
11ad5ade 908 hammer_alloc_mem_record(hammer_inode_t ip, int data_len);
d36ec43b 909void hammer_flush_record_done(hammer_record_t record, int error);
af209b0f 910void hammer_wait_mem_record_ident(hammer_record_t record, const char *ident);
b3deaf57 911void hammer_rel_mem_record(hammer_record_t record);
b84de5af 912
6a37e7e4 913int hammer_cursor_up(hammer_cursor_t cursor);
f36a9737 914int hammer_cursor_up_locked(hammer_cursor_t cursor);
8cd0a023 915int hammer_cursor_down(hammer_cursor_t cursor);
6a37e7e4 916int hammer_cursor_upgrade(hammer_cursor_t cursor);
7bc5b8c2 917int hammer_cursor_upgrade_node(hammer_cursor_t cursor);
6a37e7e4 918void hammer_cursor_downgrade(hammer_cursor_t cursor);
32c90105
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919int hammer_cursor_seek(hammer_cursor_t cursor, hammer_node_t node,
920 int index);
af209b0f 921void hammer_lock_ex_ident(struct hammer_lock *lock, const char *ident);
8cd0a023
MD
922int hammer_lock_ex_try(struct hammer_lock *lock);
923void hammer_lock_sh(struct hammer_lock *lock);
47637bff 924int hammer_lock_sh_try(struct hammer_lock *lock);
6a37e7e4
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925int hammer_lock_upgrade(struct hammer_lock *lock);
926void hammer_lock_downgrade(struct hammer_lock *lock);
b3bad96f 927int hammer_lock_status(struct hammer_lock *lock);
427e5fc6 928void hammer_unlock(struct hammer_lock *lock);
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929void hammer_ref(struct hammer_lock *lock);
930void hammer_unref(struct hammer_lock *lock);
8cd0a023 931
2f85fa4d
MD
932void hammer_sync_lock_ex(hammer_transaction_t trans);
933void hammer_sync_lock_sh(hammer_transaction_t trans);
47637bff 934int hammer_sync_lock_sh_try(hammer_transaction_t trans);
2f85fa4d
MD
935void hammer_sync_unlock(hammer_transaction_t trans);
936
66325755 937u_int32_t hammer_to_unix_xid(uuid_t *uuid);
8cd0a023 938void hammer_guid_to_uuid(uuid_t *uuid, u_int32_t guid);
ddfdf542
MD
939void hammer_time_to_timespec(u_int64_t xtime, struct timespec *ts);
940u_int64_t hammer_timespec_to_time(struct timespec *ts);
bc6c1f13
MD
941int hammer_str_to_tid(const char *str, int *ispfsp,
942 hammer_tid_t *tidp, u_int32_t *localizationp);
943int hammer_is_atatext(const char *name, int len);
5a64efa1
MD
944hammer_tid_t hammer_alloc_objid(hammer_mount_t hmp, hammer_inode_t dip,
945 int64_t namekey);
0729c8c8
MD
946void hammer_clear_objid(hammer_inode_t dip);
947void hammer_destroy_objid_cache(hammer_mount_t hmp);
8cd0a023 948
e8599db1 949int hammer_enter_undo_history(hammer_mount_t hmp, hammer_off_t offset,
b3bad96f 950 int bytes);
e8599db1 951void hammer_clear_undo_history(hammer_mount_t hmp);
66325755 952enum vtype hammer_get_vnode_type(u_int8_t obj_type);
6b4f890b 953int hammer_get_dtype(u_int8_t obj_type);
66325755 954u_int8_t hammer_get_obj_type(enum vtype vtype);
5e435c92
MD
955int64_t hammer_directory_namekey(hammer_inode_t dip, const void *name, int len,
956 u_int32_t *max_iterationsp);
e63644f0 957int hammer_nohistory(hammer_inode_t ip);
427e5fc6 958
36f82b23 959int hammer_init_cursor(hammer_transaction_t trans, hammer_cursor_t cursor,
b3bad96f 960 hammer_node_cache_t cache, hammer_inode_t ip);
4e17f465 961void hammer_normalize_cursor(hammer_cursor_t cursor);
8cd0a023 962void hammer_done_cursor(hammer_cursor_t cursor);
b3bad96f 963int hammer_recover_cursor(hammer_cursor_t cursor);
982be4bf
MD
964void hammer_unlock_cursor(hammer_cursor_t cursor);
965int hammer_lock_cursor(hammer_cursor_t cursor);
3f43fb33
MD
966hammer_cursor_t hammer_push_cursor(hammer_cursor_t ocursor);
967void hammer_pop_cursor(hammer_cursor_t ocursor, hammer_cursor_t ncursor);
b3bad96f
MD
968
969void hammer_cursor_replaced_node(hammer_node_t onode, hammer_node_t nnode);
970void hammer_cursor_removed_node(hammer_node_t onode, hammer_node_t parent,
971 int index);
972void hammer_cursor_split_node(hammer_node_t onode, hammer_node_t nnode,
973 int index);
1775b6a0
MD
974void hammer_cursor_moved_element(hammer_node_t onode, hammer_node_t nnode,
975 int oindex, int nindex);
976void hammer_cursor_parent_changed(hammer_node_t node, hammer_node_t oparent,
977 hammer_node_t nparent, int nindex);
b3bad96f
MD
978void hammer_cursor_inserted_element(hammer_node_t node, int index);
979void hammer_cursor_deleted_element(hammer_node_t node, int index);
8cd0a023
MD
980
981int hammer_btree_lookup(hammer_cursor_t cursor);
d26d0ae9 982int hammer_btree_first(hammer_cursor_t cursor);
32c90105 983int hammer_btree_last(hammer_cursor_t cursor);
8cd0a023
MD
984int hammer_btree_extract(hammer_cursor_t cursor, int flags);
985int hammer_btree_iterate(hammer_cursor_t cursor);
32c90105 986int hammer_btree_iterate_reverse(hammer_cursor_t cursor);
11ad5ade 987int hammer_btree_insert(hammer_cursor_t cursor,
602c6cb8 988 hammer_btree_leaf_elm_t elm, int *doprop);
8cd0a023 989int hammer_btree_delete(hammer_cursor_t cursor);
4c038e17
MD
990void hammer_btree_do_propagation(hammer_cursor_t cursor,
991 hammer_pseudofs_inmem_t pfsm,
602c6cb8 992 hammer_btree_leaf_elm_t leaf);
8cd0a023 993int hammer_btree_cmp(hammer_base_elm_t key1, hammer_base_elm_t key2);
d26d0ae9 994int hammer_btree_chkts(hammer_tid_t ts, hammer_base_elm_t key);
32c90105
MD
995int hammer_btree_correct_rhb(hammer_cursor_t cursor, hammer_tid_t tid);
996int hammer_btree_correct_lhb(hammer_cursor_t cursor, hammer_tid_t tid);
997
2f85fa4d
MD
998int btree_set_parent(hammer_transaction_t trans, hammer_node_t node,
999 hammer_btree_elm_t elm);
1775b6a0
MD
1000void hammer_node_lock_init(hammer_node_lock_t parent, hammer_node_t node);
1001int hammer_btree_lock_children(hammer_cursor_t cursor, int depth,
1002 hammer_node_lock_t parent);
1003void hammer_btree_lock_copy(hammer_cursor_t cursor,
1004 hammer_node_lock_t parent);
7ddc70d1 1005int hammer_btree_sync_copy(hammer_cursor_t cursor,
1775b6a0 1006 hammer_node_lock_t parent);
bac808fe 1007void hammer_btree_unlock_children(hammer_cursor_t cursor,
1775b6a0 1008 hammer_node_lock_t parent);
bcac4bbb 1009int hammer_btree_search_node(hammer_base_elm_t elm, hammer_node_ondisk_t node);
82010f9f
MD
1010hammer_node_t hammer_btree_get_parent(hammer_transaction_t trans,
1011 hammer_node_t node, int *parent_indexp,
c82af904 1012 int *errorp, int try_exclusive);
b33e2cc0 1013
c0ade690
MD
1014void hammer_print_btree_node(hammer_node_ondisk_t ondisk);
1015void hammer_print_btree_elm(hammer_btree_elm_t elm, u_int8_t type, int i);
8750964d 1016
47197d71
MD
1017void *hammer_bread(struct hammer_mount *hmp, hammer_off_t off,
1018 int *errorp, struct hammer_buffer **bufferp);
1019void *hammer_bnew(struct hammer_mount *hmp, hammer_off_t off,
1020 int *errorp, struct hammer_buffer **bufferp);
4a2796f3
MD
1021void *hammer_bread_ext(struct hammer_mount *hmp, hammer_off_t off, int bytes,
1022 int *errorp, struct hammer_buffer **bufferp);
1023void *hammer_bnew_ext(struct hammer_mount *hmp, hammer_off_t off, int bytes,
1024 int *errorp, struct hammer_buffer **bufferp);
8cd0a023
MD
1025
1026hammer_volume_t hammer_get_root_volume(hammer_mount_t hmp, int *errorp);
427e5fc6 1027
8cd0a023 1028hammer_volume_t hammer_get_volume(hammer_mount_t hmp,
427e5fc6 1029 int32_t vol_no, int *errorp);
4a2796f3
MD
1030hammer_buffer_t hammer_get_buffer(hammer_mount_t hmp, hammer_off_t buf_offset,
1031 int bytes, int isnew, int *errorp);
1b0ab2c3
MD
1032void hammer_sync_buffers(hammer_mount_t hmp,
1033 hammer_off_t base_offset, int bytes);
362ec2dc 1034int hammer_del_buffers(hammer_mount_t hmp,
1b0ab2c3 1035 hammer_off_t base_offset,
362ec2dc
MD
1036 hammer_off_t zone2_offset, int bytes,
1037 int report_conflicts);
8cd0a023 1038
fbc6e32a 1039int hammer_ref_volume(hammer_volume_t volume);
8cd0a023
MD
1040int hammer_ref_buffer(hammer_buffer_t buffer);
1041void hammer_flush_buffer_nodes(hammer_buffer_t buffer);
1042
8cd0a023 1043void hammer_rel_volume(hammer_volume_t volume, int flush);
8cd0a023
MD
1044void hammer_rel_buffer(hammer_buffer_t buffer, int flush);
1045
513ca7d7
MD
1046int hammer_vfs_export(struct mount *mp, int op,
1047 const struct export_args *export);
82010f9f
MD
1048hammer_node_t hammer_get_node(hammer_transaction_t trans,
1049 hammer_off_t node_offset, int isnew, int *errorp);
740d8317 1050void hammer_ref_node(hammer_node_t node);
4c286c36 1051hammer_node_t hammer_ref_node_safe(hammer_transaction_t trans,
bcac4bbb 1052 hammer_node_cache_t cache, int *errorp);
8cd0a023 1053void hammer_rel_node(hammer_node_t node);
36f82b23
MD
1054void hammer_delete_node(hammer_transaction_t trans,
1055 hammer_node_t node);
bcac4bbb
MD
1056void hammer_cache_node(hammer_node_cache_t cache,
1057 hammer_node_t node);
1058void hammer_uncache_node(hammer_node_cache_t cache);
8cd0a023
MD
1059void hammer_flush_node(hammer_node_t node);
1060
427e5fc6
MD
1061void hammer_dup_buffer(struct hammer_buffer **bufferp,
1062 struct hammer_buffer *buffer);
df2ccbac
MD
1063hammer_node_t hammer_alloc_btree(hammer_transaction_t trans,
1064 hammer_off_t hint, int *errorp);
36f82b23 1065void *hammer_alloc_data(hammer_transaction_t trans, int32_t data_len,
bf3b416b 1066 u_int16_t rec_type, hammer_off_t *data_offsetp,
df2ccbac
MD
1067 struct hammer_buffer **data_bufferp,
1068 hammer_off_t hint, int *errorp);
bf686dbe 1069
059819e3
MD
1070int hammer_generate_undo(hammer_transaction_t trans, hammer_io_t io,
1071 hammer_off_t zone1_offset, void *base, int len);
427e5fc6 1072
66325755 1073void hammer_put_volume(struct hammer_volume *volume, int flush);
66325755 1074void hammer_put_buffer(struct hammer_buffer *buffer, int flush);
427e5fc6 1075
36f82b23
MD
1076hammer_off_t hammer_freemap_alloc(hammer_transaction_t trans,
1077 hammer_off_t owner, int *errorp);
1078void hammer_freemap_free(hammer_transaction_t trans, hammer_off_t phys_offset,
c3be93f2 1079 hammer_off_t owner, int *errorp);
0f65be10 1080int _hammer_checkspace(hammer_mount_t hmp, int slop, int64_t *resp);
36f82b23 1081hammer_off_t hammer_blockmap_alloc(hammer_transaction_t trans, int zone,
df2ccbac 1082 int bytes, hammer_off_t hint, int *errorp);
0832c9bb
MD
1083hammer_reserve_t hammer_blockmap_reserve(hammer_mount_t hmp, int zone,
1084 int bytes, hammer_off_t *zone_offp, int *errorp);
1085void hammer_blockmap_reserve_complete(hammer_mount_t hmp,
1086 hammer_reserve_t resv);
cb51be26 1087void hammer_reserve_clrdelay(hammer_mount_t hmp, hammer_reserve_t resv);
36f82b23
MD
1088void hammer_blockmap_free(hammer_transaction_t trans,
1089 hammer_off_t bmap_off, int bytes);
cdb6e4e6 1090int hammer_blockmap_finalize(hammer_transaction_t trans,
5e435c92 1091 hammer_reserve_t resv,
4a2796f3 1092 hammer_off_t bmap_off, int bytes);
bf686dbe
MD
1093int hammer_blockmap_getfree(hammer_mount_t hmp, hammer_off_t bmap_off,
1094 int *curp, int *errorp);
40043e7f
MD
1095hammer_off_t hammer_blockmap_lookup(hammer_mount_t hmp, hammer_off_t bmap_off,
1096 int *errorp);
bf686dbe
MD
1097hammer_off_t hammer_undo_lookup(hammer_mount_t hmp, hammer_off_t bmap_off,
1098 int *errorp);
06ad81ff
MD
1099int64_t hammer_undo_used(hammer_transaction_t trans);
1100int64_t hammer_undo_space(hammer_transaction_t trans);
1f07f686
MD
1101int64_t hammer_undo_max(hammer_mount_t hmp);
1102
8cd0a023
MD
1103void hammer_start_transaction(struct hammer_transaction *trans,
1104 struct hammer_mount *hmp);
36f82b23
MD
1105void hammer_simple_transaction(struct hammer_transaction *trans,
1106 struct hammer_mount *hmp);
b84de5af
MD
1107void hammer_start_transaction_fls(struct hammer_transaction *trans,
1108 struct hammer_mount *hmp);
1109void hammer_done_transaction(struct hammer_transaction *trans);
66325755 1110
47637bff 1111void hammer_modify_inode(hammer_inode_t ip, int flags);
f90dde4c 1112void hammer_flush_inode(hammer_inode_t ip, int flags);
cdb6e4e6 1113void hammer_flush_inode_done(hammer_inode_t ip, int error);
b84de5af
MD
1114void hammer_wait_inode(hammer_inode_t ip);
1115
8cd0a023
MD
1116int hammer_create_inode(struct hammer_transaction *trans, struct vattr *vap,
1117 struct ucred *cred, struct hammer_inode *dip,
5a64efa1 1118 const char *name, int namelen,
ea434b6f
MD
1119 hammer_pseudofs_inmem_t pfsm,
1120 struct hammer_inode **ipp);
a89aec1b 1121void hammer_rel_inode(hammer_inode_t ip, int flush);
51c35492 1122int hammer_reload_inode(hammer_inode_t ip, void *arg __unused);
af209b0f 1123int hammer_ino_rb_compare(hammer_inode_t ip1, hammer_inode_t ip2);
cdb6e4e6 1124int hammer_destroy_inode_callback(hammer_inode_t ip, void *data __unused);
51c35492 1125
02325004 1126int hammer_sync_inode(hammer_transaction_t trans, hammer_inode_t ip);
7b6ccb11 1127void hammer_test_inode(hammer_inode_t dip);
e8599db1 1128void hammer_inode_unloadable_check(hammer_inode_t ip, int getvp);
8cd0a023 1129
a89aec1b 1130int hammer_ip_add_directory(struct hammer_transaction *trans,
5a930e66 1131 hammer_inode_t dip, const char *name, int bytes,
8cd0a023 1132 hammer_inode_t nip);
a89aec1b 1133int hammer_ip_del_directory(struct hammer_transaction *trans,
8cd0a023
MD
1134 hammer_cursor_t cursor, hammer_inode_t dip,
1135 hammer_inode_t ip);
47637bff 1136hammer_record_t hammer_ip_add_bulk(hammer_inode_t ip, off_t file_offset,
0832c9bb 1137 void *data, int bytes, int *errorp);
47637bff 1138int hammer_ip_frontend_trunc(struct hammer_inode *ip, off_t file_size);
7a04d74f
MD
1139int hammer_ip_add_record(struct hammer_transaction *trans,
1140 hammer_record_t record);
4e17f465 1141int hammer_ip_delete_range(hammer_cursor_t cursor, hammer_inode_t ip,
47637bff 1142 int64_t ran_beg, int64_t ran_end, int truncating);
a9d52b76 1143int hammer_ip_delete_clean(hammer_cursor_t cursor, hammer_inode_t ip,
4e17f465
MD
1144 int *countp);
1145int hammer_ip_sync_data(hammer_cursor_t cursor, hammer_inode_t ip,
1146 int64_t offset, void *data, int bytes);
36f82b23 1147int hammer_ip_sync_record(hammer_transaction_t trans, hammer_record_t rec);
4e17f465 1148int hammer_ip_sync_record_cursor(hammer_cursor_t cursor, hammer_record_t rec);
ea434b6f
MD
1149hammer_pseudofs_inmem_t hammer_load_pseudofs(hammer_transaction_t trans,
1150 u_int32_t localization, int *errorp);
1151int hammer_mkroot_pseudofs(hammer_transaction_t trans, struct ucred *cred,
1152 hammer_pseudofs_inmem_t pfsm);
1153int hammer_save_pseudofs(hammer_transaction_t trans,
1154 hammer_pseudofs_inmem_t pfsm);
842e7a70 1155int hammer_unload_pseudofs(hammer_transaction_t trans, u_int32_t localization);
5fa5c92f 1156void hammer_rel_pseudofs(hammer_mount_t hmp, hammer_pseudofs_inmem_t pfsm);
7dc57964
MD
1157int hammer_ioctl(hammer_inode_t ip, u_long com, caddr_t data, int fflag,
1158 struct ucred *cred);
1159
748efb59 1160void hammer_io_init(hammer_io_t io, hammer_volume_t volume,
10a5d1ba 1161 enum hammer_io_type type);
2f85fa4d
MD
1162int hammer_io_read(struct vnode *devvp, struct hammer_io *io,
1163 hammer_off_t limit);
66325755 1164int hammer_io_new(struct vnode *devvp, struct hammer_io *io);
362ec2dc 1165int hammer_io_inval(hammer_volume_t volume, hammer_off_t zone2_offset);
ecca949a 1166struct buf *hammer_io_release(struct hammer_io *io, int flush);
055f5ff8 1167void hammer_io_flush(struct hammer_io *io);
1b0ab2c3 1168void hammer_io_wait(struct hammer_io *io);
055f5ff8 1169void hammer_io_waitdep(struct hammer_io *io);
af209b0f 1170void hammer_io_wait_all(hammer_mount_t hmp, const char *ident);
1b0ab2c3
MD
1171int hammer_io_direct_read(hammer_mount_t hmp, struct bio *bio,
1172 hammer_btree_leaf_elm_t leaf);
1173int hammer_io_direct_write(hammer_mount_t hmp, hammer_record_t record,
1174 struct bio *bio);
1175void hammer_io_direct_wait(hammer_record_t record);
43c665ae 1176void hammer_io_direct_uncache(hammer_mount_t hmp, hammer_btree_leaf_elm_t leaf);
9f5097dc
MD
1177void hammer_io_write_interlock(hammer_io_t io);
1178void hammer_io_done_interlock(hammer_io_t io);
4a2796f3 1179void hammer_io_clear_modify(struct hammer_io *io, int inval);
cebe9493 1180void hammer_io_clear_modlist(struct hammer_io *io);
748efb59
MD
1181void hammer_io_flush_sync(hammer_mount_t hmp);
1182
36f82b23
MD
1183void hammer_modify_volume(hammer_transaction_t trans, hammer_volume_t volume,
1184 void *base, int len);
1185void hammer_modify_buffer(hammer_transaction_t trans, hammer_buffer_t buffer,
1186 void *base, int len);
10a5d1ba
MD
1187void hammer_modify_volume_done(hammer_volume_t volume);
1188void hammer_modify_buffer_done(hammer_buffer_t buffer);
0b075555 1189
36f82b23
MD
1190int hammer_ioc_reblock(hammer_transaction_t trans, hammer_inode_t ip,
1191 struct hammer_ioc_reblock *reblock);
1775b6a0
MD
1192int hammer_ioc_rebalance(hammer_transaction_t trans, hammer_inode_t ip,
1193 struct hammer_ioc_rebalance *rebal);
11ad5ade
MD
1194int hammer_ioc_prune(hammer_transaction_t trans, hammer_inode_t ip,
1195 struct hammer_ioc_prune *prune);
c82af904
MD
1196int hammer_ioc_mirror_read(hammer_transaction_t trans, hammer_inode_t ip,
1197 struct hammer_ioc_mirror_rw *mirror);
1198int hammer_ioc_mirror_write(hammer_transaction_t trans, hammer_inode_t ip,
1199 struct hammer_ioc_mirror_rw *mirror);
5fa5c92f 1200int hammer_ioc_set_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
ea434b6f 1201 struct ucred *cred, struct hammer_ioc_pseudofs_rw *pfs);
5fa5c92f
MD
1202int hammer_ioc_get_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1203 struct hammer_ioc_pseudofs_rw *pfs);
842e7a70
MD
1204int hammer_ioc_destroy_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1205 struct hammer_ioc_pseudofs_rw *pfs);
1206int hammer_ioc_downgrade_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1207 struct hammer_ioc_pseudofs_rw *pfs);
1208int hammer_ioc_upgrade_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1209 struct hammer_ioc_pseudofs_rw *pfs);
4889cbd4
MD
1210int hammer_ioc_wait_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1211 struct hammer_ioc_pseudofs_rw *pfs);
bf686dbe 1212
855942b6 1213int hammer_signal_check(hammer_mount_t hmp);
bf686dbe 1214
059819e3
MD
1215void hammer_flusher_create(hammer_mount_t hmp);
1216void hammer_flusher_destroy(hammer_mount_t hmp);
1217void hammer_flusher_sync(hammer_mount_t hmp);
7a61b85d 1218int hammer_flusher_async(hammer_mount_t hmp, hammer_flush_group_t flg);
15e75dab 1219int hammer_flusher_async_one(hammer_mount_t hmp);
93291532 1220void hammer_flusher_wait(hammer_mount_t hmp, int seq);
82010f9f 1221void hammer_flusher_wait_next(hammer_mount_t hmp);
06ad81ff 1222int hammer_flusher_meta_limit(hammer_mount_t hmp);
93291532 1223int hammer_flusher_meta_halflimit(hammer_mount_t hmp);
06ad81ff 1224int hammer_flusher_undo_exhausted(hammer_transaction_t trans, int quarter);
525aad3a 1225void hammer_flusher_clean_loose_ios(hammer_mount_t hmp);
6c1f89f4 1226void hammer_flusher_finalize(hammer_transaction_t trans, int final);
1b0ab2c3
MD
1227int hammer_flusher_haswork(hammer_mount_t hmp);
1228
059819e3 1229
f90dde4c 1230int hammer_recover(hammer_mount_t hmp, hammer_volume_t rootvol);
51c35492 1231void hammer_recover_flush_buffers(hammer_mount_t hmp,
06ad81ff 1232 hammer_volume_t root_volume, int final);
f90dde4c 1233
19619882
MD
1234void hammer_crc_set_blockmap(hammer_blockmap_t blockmap);
1235void hammer_crc_set_volume(hammer_volume_ondisk_t ondisk);
ddfdf542 1236void hammer_crc_set_leaf(void *data, hammer_btree_leaf_elm_t leaf);
19619882
MD
1237
1238int hammer_crc_test_blockmap(hammer_blockmap_t blockmap);
1239int hammer_crc_test_volume(hammer_volume_ondisk_t ondisk);
19619882 1240int hammer_crc_test_btree(hammer_node_ondisk_t ondisk);
ddfdf542 1241int hammer_crc_test_leaf(void *data, hammer_btree_leaf_elm_t leaf);
77062c8a 1242void hkprintf(const char *ctl, ...);
a56cb012
MD
1243udev_t hammer_fsid_to_udev(uuid_t *uuid);
1244
19619882 1245
4a2796f3
MD
1246int hammer_blocksize(int64_t file_offset);
1247int64_t hammer_blockdemarc(int64_t file_offset1, int64_t file_offset2);
1248
0f65be10
MD
1249/*
1250 * Shortcut for _hammer_checkspace(), used all over the code.
1251 */
1252static __inline int
1253hammer_checkspace(hammer_mount_t hmp, int slop)
1254{
1255 return(_hammer_checkspace(hmp, slop, NULL));
1256}
1257
055f5ff8 1258#endif
427e5fc6 1259
8cd0a023 1260static __inline void
af209b0f
MD
1261hammer_wait_mem_record(hammer_record_t record)
1262{
1263 hammer_wait_mem_record_ident(record, "hmmwai");
1264}
1265
1266static __inline void
1267hammer_lock_ex(struct hammer_lock *lock)
1268{
1269 hammer_lock_ex_ident(lock, "hmrlck");
1270}
1271
bcac4bbb
MD
1272/*
1273 * Indicate that a B-Tree node is being modified.
1274 */
af209b0f 1275static __inline void
36f82b23 1276hammer_modify_node_noundo(hammer_transaction_t trans, hammer_node_t node)
bf686dbe 1277{
4c286c36 1278 KKASSERT((node->flags & HAMMER_NODE_CRCBAD) == 0);
36f82b23 1279 hammer_modify_buffer(trans, node->buffer, NULL, 0);
bf686dbe
MD
1280}
1281
1282static __inline void
36f82b23 1283hammer_modify_node_all(hammer_transaction_t trans, struct hammer_node *node)
8cd0a023 1284{
4c286c36 1285 KKASSERT((node->flags & HAMMER_NODE_CRCBAD) == 0);
36f82b23
MD
1286 hammer_modify_buffer(trans, node->buffer,
1287 node->ondisk, sizeof(*node->ondisk));
427e5fc6
MD
1288}
1289
bf686dbe 1290static __inline void
36f82b23
MD
1291hammer_modify_node(hammer_transaction_t trans, hammer_node_t node,
1292 void *base, int len)
bf686dbe 1293{
19619882
MD
1294 hammer_crc_t *crcptr;
1295
bf686dbe
MD
1296 KKASSERT((char *)base >= (char *)node->ondisk &&
1297 (char *)base + len <=
1298 (char *)node->ondisk + sizeof(*node->ondisk));
4c286c36 1299 KKASSERT((node->flags & HAMMER_NODE_CRCBAD) == 0);
36f82b23 1300 hammer_modify_buffer(trans, node->buffer, base, len);
19619882
MD
1301 crcptr = &node->ondisk->crc;
1302 hammer_modify_buffer(trans, node->buffer, crcptr, sizeof(hammer_crc_t));
1303 --node->buffer->io.modify_refs; /* only want one ref */
bf686dbe
MD
1304}
1305
bcac4bbb
MD
1306/*
1307 * Indicate that the specified modifications have been completed.
1308 *
1309 * Do not try to generate the crc here, it's very expensive to do and a
1310 * sequence of insertions or deletions can result in many calls to this
1311 * function on the same node.
1312 */
bf686dbe 1313static __inline void
10a5d1ba
MD
1314hammer_modify_node_done(hammer_node_t node)
1315{
bcac4bbb
MD
1316 node->flags |= HAMMER_NODE_CRCGOOD;
1317 if ((node->flags & HAMMER_NODE_NEEDSCRC) == 0) {
1318 node->flags |= HAMMER_NODE_NEEDSCRC;
1319 node->buffer->io.gencrc = 1;
1320 hammer_ref_node(node);
1321 }
10a5d1ba
MD
1322 hammer_modify_buffer_done(node->buffer);
1323}
1324
e8599db1
MD
1325#define hammer_modify_volume_field(trans, vol, field) \
1326 hammer_modify_volume(trans, vol, &(vol)->ondisk->field, \
1327 sizeof((vol)->ondisk->field))
1328
c9b9e29d
MD
1329#define hammer_modify_node_field(trans, node, field) \
1330 hammer_modify_node(trans, node, &(node)->ondisk->field, \
1331 sizeof((node)->ondisk->field))
1332