Merge branch 'master' of ssh://crater.dragonflybsd.org/repository/git/dragonfly
[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 {
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127 int refs; /* active references delay writes */
128 volatile u_int lockval; /* lock count and control bits */
129 struct thread *owner; /* owner if exclusively held */
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130};
131
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132#define HAMMER_LOCKF_EXCLUSIVE 0x40000000
133#define HAMMER_LOCKF_WANTED 0x80000000
134
135static __inline int
136hammer_notlocked(struct hammer_lock *lock)
137{
138 return(lock->lockval == 0);
139}
140
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141static __inline int
142hammer_islocked(struct hammer_lock *lock)
143{
899eb297 144 return(lock->lockval != 0);
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145}
146
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147static __inline int
148hammer_isactive(struct hammer_lock *lock)
149{
150 return(lock->refs != 0);
151}
152
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153static __inline int
154hammer_islastref(struct hammer_lock *lock)
155{
156 return(lock->refs == 1);
157}
c60bb2c5 158
6a37e7e4 159/*
7aa3b8a6 160 * Return if we specifically own the lock exclusively.
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161 */
162static __inline int
7aa3b8a6 163hammer_lock_excl_owned(struct hammer_lock *lock, thread_t td)
6a37e7e4 164{
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165 if ((lock->lockval & HAMMER_LOCKF_EXCLUSIVE) &&
166 lock->owner == td) {
7aa3b8a6 167 return(1);
899eb297 168 }
7aa3b8a6 169 return(0);
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170}
171
ec4e8497 172/*
1f07f686 173 * Flush state, used by various structures
ec4e8497 174 */
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175typedef enum hammer_inode_state {
176 HAMMER_FST_IDLE,
177 HAMMER_FST_SETUP,
178 HAMMER_FST_FLUSH
179} hammer_inode_state_t;
ec4e8497 180
1f07f686 181TAILQ_HEAD(hammer_record_list, hammer_record);
ec4e8497 182
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183/*
184 * Pseudo-filesystem extended data tracking
185 */
186struct hammer_pfs_rb_tree;
187struct hammer_pseudofs_inmem;
188RB_HEAD(hammer_pfs_rb_tree, hammer_pseudofs_inmem);
189RB_PROTOTYPE2(hammer_pfs_rb_tree, hammer_pseudofs_inmem, rb_node,
190 hammer_pfs_rb_compare, u_int32_t);
191
192struct hammer_pseudofs_inmem {
193 RB_ENTRY(hammer_pseudofs_inmem) rb_node;
194 struct hammer_lock lock;
195 u_int32_t localization;
ea434b6f 196 hammer_tid_t create_tid;
842e7a70 197 int flags;
a56cb012 198 udev_t fsid_udev;
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199 struct hammer_pseudofs_data pfsd;
200};
201
202typedef struct hammer_pseudofs_inmem *hammer_pseudofs_inmem_t;
203
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204#define HAMMER_PFSM_DELETED 0x0001
205
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206/*
207 * Cache object ids. A fixed number of objid cache structures are
208 * created to reserve object id's for newly created files in multiples
209 * of 100,000, localized to a particular directory, and recycled as
210 * needed. This allows parallel create operations in different
211 * directories to retain fairly localized object ids which in turn
212 * improves reblocking performance and layout.
213 */
bf3b416b 214#define OBJID_CACHE_SIZE 1024
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215#define OBJID_CACHE_BULK_BITS 10 /* 10 bits (1024) */
216#define OBJID_CACHE_BULK (32 * 32) /* two level (1024) */
217#define OBJID_CACHE_BULK_MASK (OBJID_CACHE_BULK - 1)
218#define OBJID_CACHE_BULK_MASK64 ((u_int64_t)(OBJID_CACHE_BULK - 1))
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219
220typedef struct hammer_objid_cache {
221 TAILQ_ENTRY(hammer_objid_cache) entry;
222 struct hammer_inode *dip;
5a64efa1 223 hammer_tid_t base_tid;
0729c8c8 224 int count;
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225 u_int32_t bm0;
226 u_int32_t bm1[32];
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227} *hammer_objid_cache_t;
228
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229/*
230 * Associate an inode with a B-Tree node to cache search start positions
231 */
232typedef struct hammer_node_cache {
7a61b85d 233 TAILQ_ENTRY(hammer_node_cache) entry;
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234 struct hammer_node *node;
235 struct hammer_inode *ip;
236} *hammer_node_cache_t;
237
238TAILQ_HEAD(hammer_node_cache_list, hammer_node_cache);
239
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240/*
241 * Structure used to organize flush groups. Flush groups must be
242 * organized into chunks in order to avoid blowing out the UNDO FIFO.
243 * Without this a 'sync' could end up flushing 50,000 inodes in a single
244 * transaction.
245 */
246struct hammer_flush_group {
247 TAILQ_ENTRY(hammer_flush_group) flush_entry;
248 TAILQ_HEAD(, hammer_inode) flush_list;
38b9080b 249 int unused01; /* inode load */
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250 int total_count; /* record load */
251 int running; /* group is running */
252 int closed;
253 int refs;
254};
255
256typedef struct hammer_flush_group *hammer_flush_group_t;
257
258TAILQ_HEAD(hammer_flush_group_list, hammer_flush_group);
259
8750964d 260/*
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261 * Structure used to represent an inode in-memory.
262 *
263 * The record and data associated with an inode may be out of sync with
264 * the disk (xDIRTY flags), or not even on the disk at all (ONDISK flag
265 * clear).
266 *
267 * An inode may also hold a cache of unsynchronized records, used for
268 * database and directories only. Unsynchronized regular file data is
269 * stored in the buffer cache.
270 *
271 * NOTE: A file which is created and destroyed within the initial
272 * synchronization period can wind up not doing any disk I/O at all.
273 *
274 * Finally, an inode may cache numerous disk-referencing B-Tree cursors.
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275 */
276struct hammer_ino_rb_tree;
277struct hammer_inode;
278RB_HEAD(hammer_ino_rb_tree, hammer_inode);
279RB_PROTOTYPEX(hammer_ino_rb_tree, INFO, hammer_inode, rb_node,
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280 hammer_ino_rb_compare, hammer_inode_info_t);
281
282struct hammer_rec_rb_tree;
283struct hammer_record;
284RB_HEAD(hammer_rec_rb_tree, hammer_record);
285RB_PROTOTYPEX(hammer_rec_rb_tree, INFO, hammer_record, rb_node,
0832c9bb 286 hammer_rec_rb_compare, hammer_btree_leaf_elm_t);
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287
288TAILQ_HEAD(hammer_node_list, hammer_node);
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289
290struct hammer_inode {
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291 RB_ENTRY(hammer_inode) rb_node;
292 hammer_inode_state_t flush_state;
7a61b85d 293 hammer_flush_group_t flush_group;
059819e3 294 TAILQ_ENTRY(hammer_inode) flush_entry;
1f07f686 295 struct hammer_record_list target_list; /* target of dependant recs */
adf01747 296 int64_t obj_id; /* (key) object identifier */
b84de5af 297 hammer_tid_t obj_asof; /* (key) snapshot or 0 */
ddfdf542 298 u_int32_t obj_localization; /* (key) pseudo-fs */
b84de5af 299 struct hammer_mount *hmp;
0729c8c8 300 hammer_objid_cache_t objid_cache;
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301 int flags;
302 int error; /* flush error */
303 int cursor_ip_refs; /* sanity */
47637bff 304 int rsv_recs;
b84de5af 305 struct vnode *vp;
5fa5c92f 306 hammer_pseudofs_inmem_t pfsm;
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307 struct lockf advlock;
308 struct hammer_lock lock; /* sync copy interlock */
b84de5af 309 off_t trunc_off;
11ad5ade 310 struct hammer_btree_leaf_elm ino_leaf; /* in-memory cache */
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311 struct hammer_inode_data ino_data; /* in-memory cache */
312 struct hammer_rec_rb_tree rec_tree; /* in-memory cache */
3214ade6 313 int rec_generation;
39d8fd63 314 struct hammer_node_cache cache[4]; /* search initiate cache */
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315
316 /*
317 * When a demark is created to synchronize an inode to
318 * disk, certain fields are copied so the front-end VOPs
319 * can continue to run in parallel with the synchronization
320 * occuring in the background.
321 */
322 int sync_flags; /* to-sync flags cache */
323 off_t sync_trunc_off; /* to-sync truncation */
a9d52b76 324 off_t save_trunc_off; /* write optimization */
11ad5ade 325 struct hammer_btree_leaf_elm sync_ino_leaf; /* to-sync cache */
b84de5af 326 struct hammer_inode_data sync_ino_data; /* to-sync cache */
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327};
328
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329typedef struct hammer_inode *hammer_inode_t;
330
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331#define VTOI(vp) ((struct hammer_inode *)(vp)->v_data)
332
8cd0a023 333#define HAMMER_INODE_DDIRTY 0x0001 /* in-memory ino_data is dirty */
ddfdf542 334 /* (not including atime/mtime) */
e63644f0 335#define HAMMER_INODE_RSV_INODES 0x0002 /* hmp->rsv_inodes bumped */
7b6ccb11 336#define HAMMER_INODE_CONN_DOWN 0x0004 /* include in downward recursion */
1f07f686 337#define HAMMER_INODE_XDIRTY 0x0008 /* in-memory records */
8cd0a023 338#define HAMMER_INODE_ONDISK 0x0010 /* inode is on-disk (else not yet) */
a89aec1b 339#define HAMMER_INODE_FLUSH 0x0020 /* flush on last ref */
869e8f55 340#define HAMMER_INODE_DELETED 0x0080 /* inode delete (backend) */
76376933 341#define HAMMER_INODE_DELONDISK 0x0100 /* delete synchronized to disk */
d113fda1 342#define HAMMER_INODE_RO 0x0200 /* read-only (because of as-of) */
e8599db1 343#define HAMMER_INODE_VHELD 0x0400 /* vnode held on sync */
0a72edae 344#define HAMMER_INODE_DONDISK 0x0800 /* data records may be on disk */
f3b0f382 345#define HAMMER_INODE_BUFS 0x1000 /* dirty high level bps present */
f153644d 346#define HAMMER_INODE_REFLUSH 0x2000 /* flush on dependancy / reflush */
9f5097dc 347#define HAMMER_INODE_RECLAIM 0x4000 /* trying to reclaim */
059819e3 348#define HAMMER_INODE_FLUSHW 0x8000 /* Someone waiting for flush */
8cd0a023 349
b84de5af 350#define HAMMER_INODE_TRUNCATED 0x00010000
869e8f55 351#define HAMMER_INODE_DELETING 0x00020000 /* inode delete request (frontend)*/
4e17f465 352#define HAMMER_INODE_RESIGNAL 0x00040000 /* re-signal on re-flush */
ddfdf542 353#define HAMMER_INODE_ATIME 0x00100000 /* in-memory atime modified */
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354#define HAMMER_INODE_MTIME 0x00200000 /* in-memory mtime modified */
355#define HAMMER_INODE_WOULDBLOCK 0x00400000 /* re-issue to new flush group */
4c286c36 356#define HAMMER_INODE_DUMMY 0x00800000 /* dummy inode covering bad file */
b84de5af 357
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358#define HAMMER_INODE_MODMASK (HAMMER_INODE_DDIRTY| \
359 HAMMER_INODE_XDIRTY|HAMMER_INODE_BUFS| \
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360 HAMMER_INODE_ATIME|HAMMER_INODE_MTIME| \
361 HAMMER_INODE_TRUNCATED|HAMMER_INODE_DELETING)
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362
363#define HAMMER_INODE_MODMASK_NOXDIRTY \
364 (HAMMER_INODE_MODMASK & ~HAMMER_INODE_XDIRTY)
0b075555 365
cb51be26 366#define HAMMER_FLUSH_GROUP_SIZE 64
66325755 367
f90dde4c 368#define HAMMER_FLUSH_SIGNAL 0x0001
4e17f465 369#define HAMMER_FLUSH_RECURSION 0x0002
f90dde4c 370
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371/*
372 * Used by the inode reclaim code to pipeline reclaims and avoid
373 * blowing out kernel memory or letting the flusher get too far
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374 * behind. The reclaim wakes up when count reaches 0 or the
375 * timer expires.
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376 */
377struct hammer_reclaim {
378 TAILQ_ENTRY(hammer_reclaim) entry;
82010f9f 379 int count;
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380};
381
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382#define HAMMER_RECLAIM_FLUSH 2000
383#define HAMMER_RECLAIM_WAIT 4000
9f5097dc 384
8750964d 385/*
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386 * Structure used to represent an unsynchronized record in-memory. These
387 * records typically represent directory entries. Only non-historical
388 * records are kept in-memory.
389 *
390 * Records are organized as a per-inode RB-Tree. If the inode is not
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391 * on disk then neither are any records and the in-memory record tree
392 * represents the entire contents of the inode. If the inode is on disk
393 * then the on-disk B-Tree is scanned in parallel with the in-memory
394 * RB-Tree to synthesize the current state of the file.
395 *
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396 * Records are also used to enforce the ordering of directory create/delete
397 * operations. A new inode will not be flushed to disk unless its related
398 * directory entry is also being flushed at the same time. A directory entry
399 * will not be removed unless its related inode is also being removed at the
400 * same time.
8750964d 401 */
1f07f686 402typedef enum hammer_record_type {
e8599db1 403 HAMMER_MEM_RECORD_GENERAL, /* misc record */
930bf163 404 HAMMER_MEM_RECORD_INODE, /* inode record */
1f07f686 405 HAMMER_MEM_RECORD_ADD, /* positive memory cache record */
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406 HAMMER_MEM_RECORD_DEL, /* negative delete-on-disk record */
407 HAMMER_MEM_RECORD_DATA /* bulk-data record w/on-disk ref */
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408} hammer_record_type_t;
409
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410struct hammer_record {
411 RB_ENTRY(hammer_record) rb_node;
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412 TAILQ_ENTRY(hammer_record) target_entry;
413 hammer_inode_state_t flush_state;
7a61b85d 414 hammer_flush_group_t flush_group;
1f07f686 415 hammer_record_type_t type;
a89aec1b 416 struct hammer_lock lock;
0832c9bb 417 struct hammer_reserve *resv;
8cd0a023 418 struct hammer_inode *ip;
1f07f686 419 struct hammer_inode *target_ip;
11ad5ade 420 struct hammer_btree_leaf_elm leaf;
8cd0a023 421 union hammer_data_ondisk *data;
8cd0a023 422 int flags;
e469566b 423 hammer_off_t zone2_offset; /* direct-write only */
8cd0a023 424};
8750964d 425
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426typedef struct hammer_record *hammer_record_t;
427
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428/*
429 * Record flags. Note that FE can only be set by the frontend if the
430 * record has not been interlocked by the backend w/ BE.
431 */
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432#define HAMMER_RECF_ALLOCDATA 0x0001
433#define HAMMER_RECF_ONRBTREE 0x0002
b84de5af 434#define HAMMER_RECF_DELETED_FE 0x0004 /* deleted (frontend) */
d36ec43b 435#define HAMMER_RECF_DELETED_BE 0x0008 /* deleted (backend) */
1b0ab2c3 436#define HAMMER_RECF_COMMITTED 0x0010 /* committed to the B-Tree */
d36ec43b 437#define HAMMER_RECF_INTERLOCK_BE 0x0020 /* backend interlock */
0832c9bb 438#define HAMMER_RECF_WANTED 0x0040 /* wanted by the frontend */
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439#define HAMMER_RECF_CONVERT_DELETE 0x0100 /* special case */
440#define HAMMER_RECF_DIRECT_IO 0x0200 /* related direct I/O running*/
441#define HAMMER_RECF_DIRECT_WAIT 0x0400 /* related direct I/O running*/
e469566b 442#define HAMMER_RECF_DIRECT_INVAL 0x0800 /* buffer alias invalidation */
8cd0a023 443
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444/*
445 * hammer_delete_at_cursor() flags
446 */
447#define HAMMER_DELETE_ADJUST 0x0001
448#define HAMMER_DELETE_DESTROY 0x0002
449
8cd0a023 450/*
47197d71 451 * In-memory structures representing on-disk structures.
8cd0a023 452 */
8750964d 453struct hammer_volume;
427e5fc6 454struct hammer_buffer;
8cd0a023 455struct hammer_node;
e8599db1 456struct hammer_undo;
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457struct hammer_reserve;
458
8750964d 459RB_HEAD(hammer_vol_rb_tree, hammer_volume);
427e5fc6 460RB_HEAD(hammer_buf_rb_tree, hammer_buffer);
8cd0a023 461RB_HEAD(hammer_nod_rb_tree, hammer_node);
e8599db1 462RB_HEAD(hammer_und_rb_tree, hammer_undo);
0832c9bb 463RB_HEAD(hammer_res_rb_tree, hammer_reserve);
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464
465RB_PROTOTYPE2(hammer_vol_rb_tree, hammer_volume, rb_node,
466 hammer_vol_rb_compare, int32_t);
427e5fc6 467RB_PROTOTYPE2(hammer_buf_rb_tree, hammer_buffer, rb_node,
47197d71 468 hammer_buf_rb_compare, hammer_off_t);
8cd0a023 469RB_PROTOTYPE2(hammer_nod_rb_tree, hammer_node, rb_node,
47197d71 470 hammer_nod_rb_compare, hammer_off_t);
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471RB_PROTOTYPE2(hammer_und_rb_tree, hammer_undo, rb_node,
472 hammer_und_rb_compare, hammer_off_t);
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473RB_PROTOTYPE2(hammer_res_rb_tree, hammer_reserve, rb_node,
474 hammer_res_rb_compare, hammer_off_t);
8750964d 475
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476/*
477 * IO management - embedded at the head of various in-memory structures
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478 *
479 * VOLUME - hammer_volume containing meta-data
480 * META_BUFFER - hammer_buffer containing meta-data
481 * DATA_BUFFER - hammer_buffer containing pure-data
482 *
483 * Dirty volume headers and dirty meta-data buffers are locked until the
484 * flusher can sequence them out. Dirty pure-data buffers can be written.
485 * Clean buffers can be passively released.
66325755 486 */
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487typedef enum hammer_io_type {
488 HAMMER_STRUCTURE_VOLUME,
489 HAMMER_STRUCTURE_META_BUFFER,
490 HAMMER_STRUCTURE_UNDO_BUFFER,
491 HAMMER_STRUCTURE_DATA_BUFFER
492} hammer_io_type_t;
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493
494union hammer_io_structure;
055f5ff8 495struct hammer_io;
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496
497struct worklist {
498 LIST_ENTRY(worklist) node;
499};
500
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501TAILQ_HEAD(hammer_io_list, hammer_io);
502typedef struct hammer_io_list *hammer_io_list_t;
055f5ff8 503
66325755 504struct hammer_io {
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505 struct worklist worklist;
506 struct hammer_lock lock;
507 enum hammer_io_type type;
508 struct hammer_mount *hmp;
748efb59 509 struct hammer_volume *volume;
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510 TAILQ_ENTRY(hammer_io) mod_entry; /* list entry if modified */
511 hammer_io_list_t mod_list;
512 struct buf *bp;
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513 int64_t offset; /* zone-2 offset */
514 int bytes; /* buffer cache buffer size */
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515 int loading; /* loading/unloading interlock */
516 int modify_refs;
517
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518 u_int modified : 1; /* bp's data was modified */
519 u_int released : 1; /* bp released (w/ B_LOCKED set) */
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520 u_int running : 1; /* bp write IO in progress */
521 u_int waiting : 1; /* someone is waiting on us */
b33e2cc0 522 u_int validated : 1; /* ondisk has been validated */
b58c6388 523 u_int waitdep : 1; /* flush waits for dependancies */
51c35492 524 u_int recovered : 1; /* has recovery ref */
9f5097dc 525 u_int waitmod : 1; /* waiting for modify_refs */
cebe9493 526 u_int reclaim : 1; /* reclaim requested */
bcac4bbb 527 u_int gencrc : 1; /* crc needs to be generated */
cdb6e4e6 528 u_int ioerror : 1; /* abort on io-error */
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529};
530
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531typedef struct hammer_io *hammer_io_t;
532
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533#define HAMMER_CLUSTER_SIZE (64 * 1024)
534#if HAMMER_CLUSTER_SIZE > MAXBSIZE
535#undef HAMMER_CLUSTER_SIZE
536#define HAMMER_CLUSTER_SIZE MAXBSIZE
537#endif
538#define HAMMER_CLUSTER_BUFS (HAMMER_CLUSTER_SIZE / HAMMER_BUFSIZE)
539
66325755 540/*
8cd0a023 541 * In-memory volume representing on-disk buffer
66325755 542 */
8750964d 543struct hammer_volume {
66325755 544 struct hammer_io io;
8750964d 545 RB_ENTRY(hammer_volume) rb_node;
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546 struct hammer_volume_ondisk *ondisk;
547 int32_t vol_no;
fbc6e32a 548 int64_t nblocks; /* note: special calculation for statfs */
47197d71 549 int64_t buffer_base; /* base offset of buffer 0 */
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550 hammer_off_t maxbuf_off; /* Maximum buffer offset (zone-2) */
551 hammer_off_t maxraw_off; /* Maximum raw offset for device */
c60bb2c5 552 char *vol_name;
8750964d 553 struct vnode *devvp;
427e5fc6 554 int vol_flags;
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555};
556
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557typedef struct hammer_volume *hammer_volume_t;
558
66325755 559/*
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560 * In-memory buffer (other then volume, super-cluster, or cluster),
561 * representing an on-disk buffer.
66325755 562 */
427e5fc6 563struct hammer_buffer {
66325755 564 struct hammer_io io;
427e5fc6 565 RB_ENTRY(hammer_buffer) rb_node;
47197d71 566 void *ondisk;
34d829f7 567 hammer_off_t zoneX_offset;
0832c9bb 568 hammer_off_t zone2_offset;
cebe9493 569 struct hammer_reserve *resv;
8cd0a023 570 struct hammer_node_list clist;
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571};
572
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573typedef struct hammer_buffer *hammer_buffer_t;
574
575/*
576 * In-memory B-Tree node, representing an on-disk B-Tree node.
577 *
578 * This is a hang-on structure which is backed by a hammer_buffer,
579 * indexed by a hammer_cluster, and used for fine-grained locking of
580 * B-Tree nodes in order to properly control lock ordering. A hammer_buffer
581 * can contain multiple nodes representing wildly disassociated portions
582 * of the B-Tree so locking cannot be done on a buffer-by-buffer basis.
583 *
584 * This structure uses a cluster-relative index to reduce the number
585 * of layers required to access it, and also because all on-disk B-Tree
586 * references are cluster-relative offsets.
587 */
588struct hammer_node {
589 struct hammer_lock lock; /* node-by-node lock */
590 TAILQ_ENTRY(hammer_node) entry; /* per-buffer linkage */
591 RB_ENTRY(hammer_node) rb_node; /* per-cluster linkage */
47197d71 592 hammer_off_t node_offset; /* full offset spec */
40043e7f 593 struct hammer_mount *hmp;
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594 struct hammer_buffer *buffer; /* backing buffer */
595 hammer_node_ondisk_t ondisk; /* ptr to on-disk structure */
b3bad96f 596 TAILQ_HEAD(, hammer_cursor) cursor_list; /* deadlock recovery */
bcac4bbb 597 struct hammer_node_cache_list cache_list; /* passive caches */
b3deaf57 598 int flags;
740d8317 599 int loading; /* load interlock */
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600};
601
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602#define HAMMER_NODE_DELETED 0x0001
603#define HAMMER_NODE_FLUSH 0x0002
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604#define HAMMER_NODE_CRCGOOD 0x0004
605#define HAMMER_NODE_NEEDSCRC 0x0008
c82af904 606#define HAMMER_NODE_NEEDSMIRROR 0x0010
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607#define HAMMER_NODE_CRCBAD 0x0020
608
609#define HAMMER_NODE_CRCANY (HAMMER_NODE_CRCGOOD | HAMMER_NODE_CRCBAD)
b3deaf57 610
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611typedef struct hammer_node *hammer_node_t;
612
b33e2cc0 613/*
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614 * List of locked nodes. This structure is used to lock potentially large
615 * numbers of nodes as an aid for complex B-Tree operations.
b33e2cc0 616 */
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617struct hammer_node_lock;
618TAILQ_HEAD(hammer_node_lock_list, hammer_node_lock);
619
620struct hammer_node_lock {
621 TAILQ_ENTRY(hammer_node_lock) entry;
622 struct hammer_node_lock_list list;
623 struct hammer_node_lock *parent;
b33e2cc0 624 hammer_node_t node;
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625 hammer_node_ondisk_t copy; /* copy of on-disk data */
626 int index; /* index of this node in parent */
627 int count; /* count children */
628 int flags;
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629};
630
1775b6a0 631typedef struct hammer_node_lock *hammer_node_lock_t;
b33e2cc0 632
1775b6a0 633#define HAMMER_NODE_LOCK_UPDATED 0x0001
b33e2cc0 634
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635/*
636 * Common I/O management structure - embedded in in-memory structures
637 * which are backed by filesystem buffers.
638 */
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639union hammer_io_structure {
640 struct hammer_io io;
641 struct hammer_volume volume;
66325755 642 struct hammer_buffer buffer;
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643};
644
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645typedef union hammer_io_structure *hammer_io_structure_t;
646
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647/*
648 * The reserve structure prevents the blockmap from allocating
649 * out of a reserved bigblock. Such reservations are used by
650 * the direct-write mechanism.
651 *
652 * The structure is also used to hold off on reallocations of
653 * big blocks from the freemap until flush dependancies have
654 * been dealt with.
655 */
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656struct hammer_reserve {
657 RB_ENTRY(hammer_reserve) rb_node;
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658 TAILQ_ENTRY(hammer_reserve) delay_entry;
659 int flush_group;
cb51be26 660 int flags;
0832c9bb 661 int refs;
cb51be26 662 int zone;
df301614 663 int append_off;
cebe9493 664 hammer_off_t zone_offset;
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665};
666
667typedef struct hammer_reserve *hammer_reserve_t;
668
cb51be26 669#define HAMMER_RESF_ONDELAY 0x0001
5e435c92 670#define HAMMER_RESF_LAYER2FREE 0x0002
cb51be26 671
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672#include "hammer_cursor.h"
673
e8599db1 674/*
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675 * The undo structure tracks recent undos to avoid laying down duplicate
676 * undos within a flush group, saving us a significant amount of overhead.
677 *
678 * This is strictly a heuristic.
e8599db1 679 */
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680#define HAMMER_MAX_UNDOS 1024
681#define HAMMER_MAX_FLUSHERS 4
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682
683struct hammer_undo {
684 RB_ENTRY(hammer_undo) rb_node;
685 TAILQ_ENTRY(hammer_undo) lru_entry;
686 hammer_off_t offset;
687 int bytes;
688};
689
690typedef struct hammer_undo *hammer_undo_t;
691
af209b0f 692struct hammer_flusher_info;
7a61b85d 693TAILQ_HEAD(hammer_flusher_info_list, hammer_flusher_info);
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694
695struct hammer_flusher {
696 int signal; /* flusher thread sequencer */
697 int act; /* currently active flush group */
698 int done; /* set to act when complete */
699 int next; /* next flush group */
700 int group_lock; /* lock sequencing of the next flush */
701 int exiting; /* request master exit */
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702 thread_t td; /* master flusher thread */
703 hammer_tid_t tid; /* last flushed transaction id */
704 int finalize_want; /* serialize finalization */
705 struct hammer_lock finalize_lock; /* serialize finalization */
706 struct hammer_transaction trans; /* shared transaction */
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707 struct hammer_flusher_info_list run_list;
708 struct hammer_flusher_info_list ready_list;
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709};
710
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711/*
712 * Internal hammer mount data structure
713 */
714struct hammer_mount {
715 struct mount *mp;
27ea2398 716 /*struct vnode *rootvp;*/
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717 struct hammer_ino_rb_tree rb_inos_root;
718 struct hammer_vol_rb_tree rb_vols_root;
40043e7f 719 struct hammer_nod_rb_tree rb_nods_root;
e8599db1 720 struct hammer_und_rb_tree rb_undo_root;
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721 struct hammer_res_rb_tree rb_resv_root;
722 struct hammer_buf_rb_tree rb_bufs_root;
5fa5c92f 723 struct hammer_pfs_rb_tree rb_pfsm_root;
8750964d 724 struct hammer_volume *rootvol;
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725 struct hammer_base_elm root_btree_beg;
726 struct hammer_base_elm root_btree_end;
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727
728 struct malloc_type *m_misc;
729 struct malloc_type *m_inodes;
730
cdb6e4e6 731 int flags; /* HAMMER_MOUNT_xxx flags */
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732 int hflags;
733 int ronly;
734 int nvolumes;
d26d0ae9 735 int volume_iterator;
732a1697 736 int master_id; /* -1 or 0-15 - clustering and mirroring */
44a83111 737 int version; /* hammer filesystem version to use */
e63644f0 738 int rsv_inodes; /* reserved space due to dirty inodes */
a7e9bef1 739 int64_t rsv_databytes; /* reserved space due to record data */
e63644f0 740 int rsv_recs; /* reserved space due to dirty records */
a7e9bef1 741 int rsv_fromdelay; /* bigblocks reserved due to flush delay */
7a61b85d 742 int undo_rec_limit; /* based on size of undo area */
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743 int last_newrecords;
744 int count_newrecords;
da2da375 745
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746 int inode_reclaims; /* inodes pending reclaim by flusher */
747 int count_inodes; /* total number of inodes */
af209b0f 748 int count_iqueued; /* inodes queued to flusher */
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749
750 struct hammer_flusher flusher;
751
855942b6 752 u_int check_interrupt;
8750964d 753 uuid_t fsid;
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754 struct hammer_io_list volu_list; /* dirty undo buffers */
755 struct hammer_io_list undo_list; /* dirty undo buffers */
756 struct hammer_io_list data_list; /* dirty data buffers */
0832c9bb 757 struct hammer_io_list alt_data_list; /* dirty data buffers */
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758 struct hammer_io_list meta_list; /* dirty meta bufs */
759 struct hammer_io_list lose_list; /* loose buffers */
f5a07a7a
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760 int locked_dirty_space; /* meta/volu count */
761 int io_running_space;
0729c8c8 762 int objid_cache_count;
cdb6e4e6
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763 int error; /* critical I/O error */
764 struct krate krate; /* rate limited kprintf */
ddfdf542 765 hammer_tid_t asof; /* snapshot mount */
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766 hammer_tid_t next_tid;
767 hammer_tid_t flush_tid1; /* flusher tid sequencing */
768 hammer_tid_t flush_tid2; /* flusher tid sequencing */
e63644f0
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769 int64_t copy_stat_freebigblocks; /* number of free bigblocks */
770
513ca7d7 771 struct netexport export;
9480ff55 772 struct hammer_lock sync_lock;
c9b9e29d 773 struct hammer_lock free_lock;
d99d6bf5
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774 struct hammer_lock undo_lock;
775 struct hammer_lock blkmap_lock;
0729c8c8 776 struct hammer_blockmap blockmap[HAMMER_MAX_ZONES];
e8599db1
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777 struct hammer_undo undos[HAMMER_MAX_UNDOS];
778 int undo_alloc;
779 TAILQ_HEAD(, hammer_undo) undo_lru_list;
cebe9493 780 TAILQ_HEAD(, hammer_reserve) delay_list;
7a61b85d 781 struct hammer_flush_group_list flush_group_list;
7b6ccb11 782 hammer_flush_group_t next_flush_group;
0729c8c8 783 TAILQ_HEAD(, hammer_objid_cache) objid_cache_list;
7bc5b8c2 784 TAILQ_HEAD(, hammer_reclaim) reclaim_list;
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785};
786
8cd0a023 787typedef struct hammer_mount *hammer_mount_t;
8750964d 788
cdb6e4e6 789#define HAMMER_MOUNT_CRITICAL_ERROR 0x0001
82010f9f 790#define HAMMER_MOUNT_FLUSH_RECOVERY 0x0002
9f5097dc 791
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792struct hammer_sync_info {
793 int error;
794 int waitfor;
795};
796
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797#endif
798
a7e9bef1
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799/*
800 * checkspace slop (8MB chunks), higher numbers are more conservative.
801 */
93291532
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802#define HAMMER_CHKSPC_REBLOCK 25
803#define HAMMER_CHKSPC_MIRROR 20
804#define HAMMER_CHKSPC_WRITE 20
805#define HAMMER_CHKSPC_CREATE 20
806#define HAMMER_CHKSPC_REMOVE 10
7b6ccb11 807#define HAMMER_CHKSPC_EMERGENCY 0
a7e9bef1 808
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809#if defined(_KERNEL)
810
811extern struct vop_ops hammer_vnode_vops;
7a04d74f
MD
812extern struct vop_ops hammer_spec_vops;
813extern struct vop_ops hammer_fifo_vops;
66325755 814extern struct bio_ops hammer_bioops;
427e5fc6 815
2f85fa4d 816extern int hammer_debug_io;
d5ef456e 817extern int hammer_debug_general;
77062c8a 818extern int hammer_debug_debug;
e8599db1 819extern int hammer_debug_inode;
7d683b0f 820extern int hammer_debug_locks;
b3deaf57 821extern int hammer_debug_btree;
d113fda1 822extern int hammer_debug_tid;
b33e2cc0 823extern int hammer_debug_recover;
46fe7ae1 824extern int hammer_debug_recover_faults;
1b0ab2c3 825extern int hammer_cluster_enable;
7a61b85d 826extern int hammer_count_fsyncs;
b3deaf57 827extern int hammer_count_inodes;
af209b0f 828extern int hammer_count_iqueued;
9f5097dc 829extern int hammer_count_reclaiming;
b3deaf57
MD
830extern int hammer_count_records;
831extern int hammer_count_record_datas;
832extern int hammer_count_volumes;
b3deaf57
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833extern int hammer_count_buffers;
834extern int hammer_count_nodes;
a7e9bef1 835extern int64_t hammer_count_extra_space_used;
cb51be26
MD
836extern int64_t hammer_stats_btree_lookups;
837extern int64_t hammer_stats_btree_searches;
838extern int64_t hammer_stats_btree_inserts;
839extern int64_t hammer_stats_btree_deletes;
840extern int64_t hammer_stats_btree_elements;
841extern int64_t hammer_stats_btree_splits;
842extern int64_t hammer_stats_btree_iterations;
39d8fd63 843extern int64_t hammer_stats_btree_root_iterations;
cb51be26 844extern int64_t hammer_stats_record_iterations;
ce0138a6
MD
845extern int64_t hammer_stats_file_read;
846extern int64_t hammer_stats_file_write;
847extern int64_t hammer_stats_file_iopsr;
848extern int64_t hammer_stats_file_iopsw;
849extern int64_t hammer_stats_disk_read;
850extern int64_t hammer_stats_disk_write;
851extern int64_t hammer_stats_inode_flushes;
852extern int64_t hammer_stats_commits;
f5a07a7a 853extern int hammer_count_dirtybufspace;
a99b9ea2 854extern int hammer_count_refedbufs;
0832c9bb 855extern int hammer_count_reservations;
a99b9ea2
MD
856extern int hammer_count_io_running_read;
857extern int hammer_count_io_running_write;
858extern int hammer_count_io_locked;
f5a07a7a 859extern int hammer_limit_dirtybufspace;
47637bff 860extern int hammer_limit_recs;
1f07f686 861extern int hammer_bio_count;
cb51be26 862extern int hammer_verify_zone;
1b0ab2c3 863extern int hammer_verify_data;
cb51be26 864extern int hammer_write_mode;
21fde338 865extern int hammer_autoflush;
7d683b0f 866extern int64_t hammer_contention_count;
b3deaf57 867
cdb6e4e6
MD
868void hammer_critical_error(hammer_mount_t hmp, hammer_inode_t ip,
869 int error, const char *msg);
8750964d
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870int hammer_vop_inactive(struct vop_inactive_args *);
871int hammer_vop_reclaim(struct vop_reclaim_args *);
e8599db1 872int hammer_get_vnode(struct hammer_inode *ip, struct vnode **vpp);
36f82b23 873struct hammer_inode *hammer_get_inode(hammer_transaction_t trans,
adf01747 874 hammer_inode_t dip, int64_t obj_id,
ddfdf542
MD
875 hammer_tid_t asof, u_int32_t localization,
876 int flags, int *errorp);
4c286c36
MD
877struct hammer_inode *hammer_get_dummy_inode(hammer_transaction_t trans,
878 hammer_inode_t dip, int64_t obj_id,
879 hammer_tid_t asof, u_int32_t localization,
880 int flags, int *errorp);
39d8fd63
MD
881struct hammer_inode *hammer_find_inode(hammer_transaction_t trans,
882 int64_t obj_id, hammer_tid_t asof,
883 u_int32_t localization);
43c665ae
MD
884void hammer_scan_inode_snapshots(hammer_mount_t hmp,
885 hammer_inode_info_t iinfo,
886 int (*callback)(hammer_inode_t ip, void *data),
887 void *data);
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888void hammer_put_inode(struct hammer_inode *ip);
889void hammer_put_inode_ref(struct hammer_inode *ip);
4a2796f3 890void hammer_inode_waitreclaims(hammer_mount_t hmp);
82010f9f 891void hammer_inode_waithard(hammer_mount_t hmp);
66325755 892
8cd0a023 893int hammer_unload_volume(hammer_volume_t volume, void *data __unused);
51c35492
MD
894int hammer_adjust_volume_mode(hammer_volume_t volume, void *data __unused);
895
a89aec1b 896int hammer_unload_buffer(hammer_buffer_t buffer, void *data __unused);
7c19b529
MN
897int hammer_install_volume(hammer_mount_t hmp, const char *volname,
898 struct vnode *devvp);
1b0ab2c3 899int hammer_mountcheck_volumes(hammer_mount_t hmp);
8cd0a023 900
e469566b 901int hammer_mem_add(hammer_record_t record);
45a014dc 902int hammer_ip_lookup(hammer_cursor_t cursor);
4e17f465 903int hammer_ip_first(hammer_cursor_t cursor);
a89aec1b 904int hammer_ip_next(hammer_cursor_t cursor);
8cd0a023 905int hammer_ip_resolve_data(hammer_cursor_t cursor);
e63644f0
MD
906int hammer_ip_delete_record(hammer_cursor_t cursor, hammer_inode_t ip,
907 hammer_tid_t tid);
602c6cb8 908int hammer_delete_at_cursor(hammer_cursor_t cursor, int delete_flags,
842e7a70
MD
909 hammer_tid_t delete_tid, u_int32_t delete_ts,
910 int track, int64_t *stat_bytes);
b3deaf57 911int hammer_ip_check_directory_empty(hammer_transaction_t trans,
98f7132d 912 hammer_inode_t ip);
fbc6e32a 913int hammer_sync_hmp(hammer_mount_t hmp, int waitfor);
f36a9737
MD
914int hammer_queue_inodes_flusher(hammer_mount_t hmp, int waitfor);
915
8cd0a023 916hammer_record_t
11ad5ade 917 hammer_alloc_mem_record(hammer_inode_t ip, int data_len);
d36ec43b 918void hammer_flush_record_done(hammer_record_t record, int error);
af209b0f 919void hammer_wait_mem_record_ident(hammer_record_t record, const char *ident);
b3deaf57 920void hammer_rel_mem_record(hammer_record_t record);
b84de5af 921
6a37e7e4 922int hammer_cursor_up(hammer_cursor_t cursor);
f36a9737 923int hammer_cursor_up_locked(hammer_cursor_t cursor);
8cd0a023 924int hammer_cursor_down(hammer_cursor_t cursor);
6a37e7e4 925int hammer_cursor_upgrade(hammer_cursor_t cursor);
7bc5b8c2 926int hammer_cursor_upgrade_node(hammer_cursor_t cursor);
6a37e7e4 927void hammer_cursor_downgrade(hammer_cursor_t cursor);
32c90105
MD
928int hammer_cursor_seek(hammer_cursor_t cursor, hammer_node_t node,
929 int index);
af209b0f 930void hammer_lock_ex_ident(struct hammer_lock *lock, const char *ident);
8cd0a023
MD
931int hammer_lock_ex_try(struct hammer_lock *lock);
932void hammer_lock_sh(struct hammer_lock *lock);
47637bff 933int hammer_lock_sh_try(struct hammer_lock *lock);
6a37e7e4
MD
934int hammer_lock_upgrade(struct hammer_lock *lock);
935void hammer_lock_downgrade(struct hammer_lock *lock);
b3bad96f 936int hammer_lock_status(struct hammer_lock *lock);
427e5fc6 937void hammer_unlock(struct hammer_lock *lock);
66325755
MD
938void hammer_ref(struct hammer_lock *lock);
939void hammer_unref(struct hammer_lock *lock);
8cd0a023 940
2f85fa4d
MD
941void hammer_sync_lock_ex(hammer_transaction_t trans);
942void hammer_sync_lock_sh(hammer_transaction_t trans);
47637bff 943int hammer_sync_lock_sh_try(hammer_transaction_t trans);
2f85fa4d
MD
944void hammer_sync_unlock(hammer_transaction_t trans);
945
66325755 946u_int32_t hammer_to_unix_xid(uuid_t *uuid);
8cd0a023 947void hammer_guid_to_uuid(uuid_t *uuid, u_int32_t guid);
ddfdf542
MD
948void hammer_time_to_timespec(u_int64_t xtime, struct timespec *ts);
949u_int64_t hammer_timespec_to_time(struct timespec *ts);
bc6c1f13
MD
950int hammer_str_to_tid(const char *str, int *ispfsp,
951 hammer_tid_t *tidp, u_int32_t *localizationp);
952int hammer_is_atatext(const char *name, int len);
5a64efa1
MD
953hammer_tid_t hammer_alloc_objid(hammer_mount_t hmp, hammer_inode_t dip,
954 int64_t namekey);
0729c8c8
MD
955void hammer_clear_objid(hammer_inode_t dip);
956void hammer_destroy_objid_cache(hammer_mount_t hmp);
8cd0a023 957
e8599db1 958int hammer_enter_undo_history(hammer_mount_t hmp, hammer_off_t offset,
b3bad96f 959 int bytes);
e8599db1 960void hammer_clear_undo_history(hammer_mount_t hmp);
66325755 961enum vtype hammer_get_vnode_type(u_int8_t obj_type);
6b4f890b 962int hammer_get_dtype(u_int8_t obj_type);
66325755 963u_int8_t hammer_get_obj_type(enum vtype vtype);
5e435c92
MD
964int64_t hammer_directory_namekey(hammer_inode_t dip, const void *name, int len,
965 u_int32_t *max_iterationsp);
e63644f0 966int hammer_nohistory(hammer_inode_t ip);
427e5fc6 967
36f82b23 968int hammer_init_cursor(hammer_transaction_t trans, hammer_cursor_t cursor,
b3bad96f 969 hammer_node_cache_t cache, hammer_inode_t ip);
4e17f465 970void hammer_normalize_cursor(hammer_cursor_t cursor);
8cd0a023 971void hammer_done_cursor(hammer_cursor_t cursor);
b3bad96f 972int hammer_recover_cursor(hammer_cursor_t cursor);
982be4bf
MD
973void hammer_unlock_cursor(hammer_cursor_t cursor);
974int hammer_lock_cursor(hammer_cursor_t cursor);
3f43fb33
MD
975hammer_cursor_t hammer_push_cursor(hammer_cursor_t ocursor);
976void hammer_pop_cursor(hammer_cursor_t ocursor, hammer_cursor_t ncursor);
b3bad96f
MD
977
978void hammer_cursor_replaced_node(hammer_node_t onode, hammer_node_t nnode);
979void hammer_cursor_removed_node(hammer_node_t onode, hammer_node_t parent,
980 int index);
981void hammer_cursor_split_node(hammer_node_t onode, hammer_node_t nnode,
982 int index);
1775b6a0
MD
983void hammer_cursor_moved_element(hammer_node_t onode, hammer_node_t nnode,
984 int oindex, int nindex);
985void hammer_cursor_parent_changed(hammer_node_t node, hammer_node_t oparent,
986 hammer_node_t nparent, int nindex);
b3bad96f
MD
987void hammer_cursor_inserted_element(hammer_node_t node, int index);
988void hammer_cursor_deleted_element(hammer_node_t node, int index);
8cd0a023
MD
989
990int hammer_btree_lookup(hammer_cursor_t cursor);
d26d0ae9 991int hammer_btree_first(hammer_cursor_t cursor);
32c90105 992int hammer_btree_last(hammer_cursor_t cursor);
8cd0a023
MD
993int hammer_btree_extract(hammer_cursor_t cursor, int flags);
994int hammer_btree_iterate(hammer_cursor_t cursor);
32c90105 995int hammer_btree_iterate_reverse(hammer_cursor_t cursor);
11ad5ade 996int hammer_btree_insert(hammer_cursor_t cursor,
602c6cb8 997 hammer_btree_leaf_elm_t elm, int *doprop);
8cd0a023 998int hammer_btree_delete(hammer_cursor_t cursor);
4c038e17
MD
999void hammer_btree_do_propagation(hammer_cursor_t cursor,
1000 hammer_pseudofs_inmem_t pfsm,
602c6cb8 1001 hammer_btree_leaf_elm_t leaf);
8cd0a023 1002int hammer_btree_cmp(hammer_base_elm_t key1, hammer_base_elm_t key2);
d26d0ae9 1003int hammer_btree_chkts(hammer_tid_t ts, hammer_base_elm_t key);
32c90105
MD
1004int hammer_btree_correct_rhb(hammer_cursor_t cursor, hammer_tid_t tid);
1005int hammer_btree_correct_lhb(hammer_cursor_t cursor, hammer_tid_t tid);
1006
2f85fa4d
MD
1007int btree_set_parent(hammer_transaction_t trans, hammer_node_t node,
1008 hammer_btree_elm_t elm);
1775b6a0
MD
1009void hammer_node_lock_init(hammer_node_lock_t parent, hammer_node_t node);
1010int hammer_btree_lock_children(hammer_cursor_t cursor, int depth,
1011 hammer_node_lock_t parent);
1012void hammer_btree_lock_copy(hammer_cursor_t cursor,
1013 hammer_node_lock_t parent);
7ddc70d1 1014int hammer_btree_sync_copy(hammer_cursor_t cursor,
1775b6a0 1015 hammer_node_lock_t parent);
bac808fe 1016void hammer_btree_unlock_children(hammer_cursor_t cursor,
1775b6a0 1017 hammer_node_lock_t parent);
bcac4bbb 1018int hammer_btree_search_node(hammer_base_elm_t elm, hammer_node_ondisk_t node);
82010f9f
MD
1019hammer_node_t hammer_btree_get_parent(hammer_transaction_t trans,
1020 hammer_node_t node, int *parent_indexp,
c82af904 1021 int *errorp, int try_exclusive);
b33e2cc0 1022
c0ade690
MD
1023void hammer_print_btree_node(hammer_node_ondisk_t ondisk);
1024void hammer_print_btree_elm(hammer_btree_elm_t elm, u_int8_t type, int i);
8750964d 1025
47197d71
MD
1026void *hammer_bread(struct hammer_mount *hmp, hammer_off_t off,
1027 int *errorp, struct hammer_buffer **bufferp);
1028void *hammer_bnew(struct hammer_mount *hmp, hammer_off_t off,
1029 int *errorp, struct hammer_buffer **bufferp);
4a2796f3
MD
1030void *hammer_bread_ext(struct hammer_mount *hmp, hammer_off_t off, int bytes,
1031 int *errorp, struct hammer_buffer **bufferp);
1032void *hammer_bnew_ext(struct hammer_mount *hmp, hammer_off_t off, int bytes,
1033 int *errorp, struct hammer_buffer **bufferp);
8cd0a023
MD
1034
1035hammer_volume_t hammer_get_root_volume(hammer_mount_t hmp, int *errorp);
427e5fc6 1036
8cd0a023 1037hammer_volume_t hammer_get_volume(hammer_mount_t hmp,
427e5fc6 1038 int32_t vol_no, int *errorp);
4a2796f3
MD
1039hammer_buffer_t hammer_get_buffer(hammer_mount_t hmp, hammer_off_t buf_offset,
1040 int bytes, int isnew, int *errorp);
1b0ab2c3
MD
1041void hammer_sync_buffers(hammer_mount_t hmp,
1042 hammer_off_t base_offset, int bytes);
362ec2dc 1043int hammer_del_buffers(hammer_mount_t hmp,
1b0ab2c3 1044 hammer_off_t base_offset,
362ec2dc
MD
1045 hammer_off_t zone2_offset, int bytes,
1046 int report_conflicts);
8cd0a023 1047
fbc6e32a 1048int hammer_ref_volume(hammer_volume_t volume);
8cd0a023
MD
1049int hammer_ref_buffer(hammer_buffer_t buffer);
1050void hammer_flush_buffer_nodes(hammer_buffer_t buffer);
1051
8cd0a023 1052void hammer_rel_volume(hammer_volume_t volume, int flush);
8cd0a023
MD
1053void hammer_rel_buffer(hammer_buffer_t buffer, int flush);
1054
513ca7d7
MD
1055int hammer_vfs_export(struct mount *mp, int op,
1056 const struct export_args *export);
82010f9f
MD
1057hammer_node_t hammer_get_node(hammer_transaction_t trans,
1058 hammer_off_t node_offset, int isnew, int *errorp);
740d8317 1059void hammer_ref_node(hammer_node_t node);
4c286c36 1060hammer_node_t hammer_ref_node_safe(hammer_transaction_t trans,
bcac4bbb 1061 hammer_node_cache_t cache, int *errorp);
8cd0a023 1062void hammer_rel_node(hammer_node_t node);
36f82b23
MD
1063void hammer_delete_node(hammer_transaction_t trans,
1064 hammer_node_t node);
bcac4bbb
MD
1065void hammer_cache_node(hammer_node_cache_t cache,
1066 hammer_node_t node);
1067void hammer_uncache_node(hammer_node_cache_t cache);
8cd0a023
MD
1068void hammer_flush_node(hammer_node_t node);
1069
427e5fc6
MD
1070void hammer_dup_buffer(struct hammer_buffer **bufferp,
1071 struct hammer_buffer *buffer);
df2ccbac
MD
1072hammer_node_t hammer_alloc_btree(hammer_transaction_t trans,
1073 hammer_off_t hint, int *errorp);
36f82b23 1074void *hammer_alloc_data(hammer_transaction_t trans, int32_t data_len,
bf3b416b 1075 u_int16_t rec_type, hammer_off_t *data_offsetp,
df2ccbac
MD
1076 struct hammer_buffer **data_bufferp,
1077 hammer_off_t hint, int *errorp);
bf686dbe 1078
059819e3
MD
1079int hammer_generate_undo(hammer_transaction_t trans, hammer_io_t io,
1080 hammer_off_t zone1_offset, void *base, int len);
427e5fc6 1081
66325755 1082void hammer_put_volume(struct hammer_volume *volume, int flush);
66325755 1083void hammer_put_buffer(struct hammer_buffer *buffer, int flush);
427e5fc6 1084
36f82b23
MD
1085hammer_off_t hammer_freemap_alloc(hammer_transaction_t trans,
1086 hammer_off_t owner, int *errorp);
1087void hammer_freemap_free(hammer_transaction_t trans, hammer_off_t phys_offset,
c3be93f2 1088 hammer_off_t owner, int *errorp);
0f65be10 1089int _hammer_checkspace(hammer_mount_t hmp, int slop, int64_t *resp);
36f82b23 1090hammer_off_t hammer_blockmap_alloc(hammer_transaction_t trans, int zone,
df2ccbac 1091 int bytes, hammer_off_t hint, int *errorp);
0832c9bb
MD
1092hammer_reserve_t hammer_blockmap_reserve(hammer_mount_t hmp, int zone,
1093 int bytes, hammer_off_t *zone_offp, int *errorp);
1094void hammer_blockmap_reserve_complete(hammer_mount_t hmp,
1095 hammer_reserve_t resv);
cb51be26 1096void hammer_reserve_clrdelay(hammer_mount_t hmp, hammer_reserve_t resv);
36f82b23
MD
1097void hammer_blockmap_free(hammer_transaction_t trans,
1098 hammer_off_t bmap_off, int bytes);
cdb6e4e6 1099int hammer_blockmap_finalize(hammer_transaction_t trans,
5e435c92 1100 hammer_reserve_t resv,
4a2796f3 1101 hammer_off_t bmap_off, int bytes);
bf686dbe
MD
1102int hammer_blockmap_getfree(hammer_mount_t hmp, hammer_off_t bmap_off,
1103 int *curp, int *errorp);
40043e7f
MD
1104hammer_off_t hammer_blockmap_lookup(hammer_mount_t hmp, hammer_off_t bmap_off,
1105 int *errorp);
bf686dbe
MD
1106hammer_off_t hammer_undo_lookup(hammer_mount_t hmp, hammer_off_t bmap_off,
1107 int *errorp);
06ad81ff
MD
1108int64_t hammer_undo_used(hammer_transaction_t trans);
1109int64_t hammer_undo_space(hammer_transaction_t trans);
1f07f686
MD
1110int64_t hammer_undo_max(hammer_mount_t hmp);
1111
8cd0a023
MD
1112void hammer_start_transaction(struct hammer_transaction *trans,
1113 struct hammer_mount *hmp);
36f82b23
MD
1114void hammer_simple_transaction(struct hammer_transaction *trans,
1115 struct hammer_mount *hmp);
b84de5af
MD
1116void hammer_start_transaction_fls(struct hammer_transaction *trans,
1117 struct hammer_mount *hmp);
1118void hammer_done_transaction(struct hammer_transaction *trans);
66325755 1119
47637bff 1120void hammer_modify_inode(hammer_inode_t ip, int flags);
f90dde4c 1121void hammer_flush_inode(hammer_inode_t ip, int flags);
cdb6e4e6 1122void hammer_flush_inode_done(hammer_inode_t ip, int error);
b84de5af
MD
1123void hammer_wait_inode(hammer_inode_t ip);
1124
8cd0a023
MD
1125int hammer_create_inode(struct hammer_transaction *trans, struct vattr *vap,
1126 struct ucred *cred, struct hammer_inode *dip,
5a64efa1 1127 const char *name, int namelen,
ea434b6f
MD
1128 hammer_pseudofs_inmem_t pfsm,
1129 struct hammer_inode **ipp);
a89aec1b 1130void hammer_rel_inode(hammer_inode_t ip, int flush);
51c35492 1131int hammer_reload_inode(hammer_inode_t ip, void *arg __unused);
af209b0f 1132int hammer_ino_rb_compare(hammer_inode_t ip1, hammer_inode_t ip2);
cdb6e4e6 1133int hammer_destroy_inode_callback(hammer_inode_t ip, void *data __unused);
51c35492 1134
02325004 1135int hammer_sync_inode(hammer_transaction_t trans, hammer_inode_t ip);
7b6ccb11 1136void hammer_test_inode(hammer_inode_t dip);
e8599db1 1137void hammer_inode_unloadable_check(hammer_inode_t ip, int getvp);
8cd0a023 1138
a89aec1b 1139int hammer_ip_add_directory(struct hammer_transaction *trans,
5a930e66 1140 hammer_inode_t dip, const char *name, int bytes,
8cd0a023 1141 hammer_inode_t nip);
a89aec1b 1142int hammer_ip_del_directory(struct hammer_transaction *trans,
8cd0a023
MD
1143 hammer_cursor_t cursor, hammer_inode_t dip,
1144 hammer_inode_t ip);
47637bff 1145hammer_record_t hammer_ip_add_bulk(hammer_inode_t ip, off_t file_offset,
0832c9bb 1146 void *data, int bytes, int *errorp);
47637bff 1147int hammer_ip_frontend_trunc(struct hammer_inode *ip, off_t file_size);
7a04d74f
MD
1148int hammer_ip_add_record(struct hammer_transaction *trans,
1149 hammer_record_t record);
4e17f465 1150int hammer_ip_delete_range(hammer_cursor_t cursor, hammer_inode_t ip,
47637bff 1151 int64_t ran_beg, int64_t ran_end, int truncating);
a9d52b76 1152int hammer_ip_delete_clean(hammer_cursor_t cursor, hammer_inode_t ip,
4e17f465
MD
1153 int *countp);
1154int hammer_ip_sync_data(hammer_cursor_t cursor, hammer_inode_t ip,
1155 int64_t offset, void *data, int bytes);
36f82b23 1156int hammer_ip_sync_record(hammer_transaction_t trans, hammer_record_t rec);
4e17f465 1157int hammer_ip_sync_record_cursor(hammer_cursor_t cursor, hammer_record_t rec);
ea434b6f
MD
1158hammer_pseudofs_inmem_t hammer_load_pseudofs(hammer_transaction_t trans,
1159 u_int32_t localization, int *errorp);
1160int hammer_mkroot_pseudofs(hammer_transaction_t trans, struct ucred *cred,
1161 hammer_pseudofs_inmem_t pfsm);
1162int hammer_save_pseudofs(hammer_transaction_t trans,
1163 hammer_pseudofs_inmem_t pfsm);
842e7a70 1164int hammer_unload_pseudofs(hammer_transaction_t trans, u_int32_t localization);
5fa5c92f 1165void hammer_rel_pseudofs(hammer_mount_t hmp, hammer_pseudofs_inmem_t pfsm);
7dc57964
MD
1166int hammer_ioctl(hammer_inode_t ip, u_long com, caddr_t data, int fflag,
1167 struct ucred *cred);
1168
748efb59 1169void hammer_io_init(hammer_io_t io, hammer_volume_t volume,
10a5d1ba 1170 enum hammer_io_type type);
2f85fa4d
MD
1171int hammer_io_read(struct vnode *devvp, struct hammer_io *io,
1172 hammer_off_t limit);
66325755 1173int hammer_io_new(struct vnode *devvp, struct hammer_io *io);
362ec2dc 1174int hammer_io_inval(hammer_volume_t volume, hammer_off_t zone2_offset);
ecca949a 1175struct buf *hammer_io_release(struct hammer_io *io, int flush);
055f5ff8 1176void hammer_io_flush(struct hammer_io *io);
1b0ab2c3 1177void hammer_io_wait(struct hammer_io *io);
055f5ff8 1178void hammer_io_waitdep(struct hammer_io *io);
af209b0f 1179void hammer_io_wait_all(hammer_mount_t hmp, const char *ident);
1b0ab2c3
MD
1180int hammer_io_direct_read(hammer_mount_t hmp, struct bio *bio,
1181 hammer_btree_leaf_elm_t leaf);
1182int hammer_io_direct_write(hammer_mount_t hmp, hammer_record_t record,
1183 struct bio *bio);
1184void hammer_io_direct_wait(hammer_record_t record);
43c665ae 1185void hammer_io_direct_uncache(hammer_mount_t hmp, hammer_btree_leaf_elm_t leaf);
9f5097dc
MD
1186void hammer_io_write_interlock(hammer_io_t io);
1187void hammer_io_done_interlock(hammer_io_t io);
4a2796f3 1188void hammer_io_clear_modify(struct hammer_io *io, int inval);
cebe9493 1189void hammer_io_clear_modlist(struct hammer_io *io);
748efb59
MD
1190void hammer_io_flush_sync(hammer_mount_t hmp);
1191
36f82b23
MD
1192void hammer_modify_volume(hammer_transaction_t trans, hammer_volume_t volume,
1193 void *base, int len);
1194void hammer_modify_buffer(hammer_transaction_t trans, hammer_buffer_t buffer,
1195 void *base, int len);
10a5d1ba
MD
1196void hammer_modify_volume_done(hammer_volume_t volume);
1197void hammer_modify_buffer_done(hammer_buffer_t buffer);
0b075555 1198
36f82b23
MD
1199int hammer_ioc_reblock(hammer_transaction_t trans, hammer_inode_t ip,
1200 struct hammer_ioc_reblock *reblock);
1775b6a0
MD
1201int hammer_ioc_rebalance(hammer_transaction_t trans, hammer_inode_t ip,
1202 struct hammer_ioc_rebalance *rebal);
11ad5ade
MD
1203int hammer_ioc_prune(hammer_transaction_t trans, hammer_inode_t ip,
1204 struct hammer_ioc_prune *prune);
c82af904
MD
1205int hammer_ioc_mirror_read(hammer_transaction_t trans, hammer_inode_t ip,
1206 struct hammer_ioc_mirror_rw *mirror);
1207int hammer_ioc_mirror_write(hammer_transaction_t trans, hammer_inode_t ip,
1208 struct hammer_ioc_mirror_rw *mirror);
5fa5c92f 1209int hammer_ioc_set_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
ea434b6f 1210 struct ucred *cred, struct hammer_ioc_pseudofs_rw *pfs);
5fa5c92f
MD
1211int hammer_ioc_get_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1212 struct hammer_ioc_pseudofs_rw *pfs);
842e7a70
MD
1213int hammer_ioc_destroy_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1214 struct hammer_ioc_pseudofs_rw *pfs);
1215int hammer_ioc_downgrade_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1216 struct hammer_ioc_pseudofs_rw *pfs);
1217int hammer_ioc_upgrade_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1218 struct hammer_ioc_pseudofs_rw *pfs);
4889cbd4
MD
1219int hammer_ioc_wait_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1220 struct hammer_ioc_pseudofs_rw *pfs);
e27700cf
MN
1221int hammer_ioc_expand(hammer_transaction_t trans, hammer_inode_t ip,
1222 struct hammer_ioc_expand *expand);
bf686dbe 1223
855942b6 1224int hammer_signal_check(hammer_mount_t hmp);
bf686dbe 1225
059819e3
MD
1226void hammer_flusher_create(hammer_mount_t hmp);
1227void hammer_flusher_destroy(hammer_mount_t hmp);
1228void hammer_flusher_sync(hammer_mount_t hmp);
7a61b85d 1229int hammer_flusher_async(hammer_mount_t hmp, hammer_flush_group_t flg);
15e75dab 1230int hammer_flusher_async_one(hammer_mount_t hmp);
93291532 1231void hammer_flusher_wait(hammer_mount_t hmp, int seq);
82010f9f 1232void hammer_flusher_wait_next(hammer_mount_t hmp);
06ad81ff 1233int hammer_flusher_meta_limit(hammer_mount_t hmp);
93291532 1234int hammer_flusher_meta_halflimit(hammer_mount_t hmp);
06ad81ff 1235int hammer_flusher_undo_exhausted(hammer_transaction_t trans, int quarter);
525aad3a 1236void hammer_flusher_clean_loose_ios(hammer_mount_t hmp);
6c1f89f4 1237void hammer_flusher_finalize(hammer_transaction_t trans, int final);
1b0ab2c3
MD
1238int hammer_flusher_haswork(hammer_mount_t hmp);
1239
059819e3 1240
f90dde4c 1241int hammer_recover(hammer_mount_t hmp, hammer_volume_t rootvol);
51c35492 1242void hammer_recover_flush_buffers(hammer_mount_t hmp,
06ad81ff 1243 hammer_volume_t root_volume, int final);
f90dde4c 1244
19619882
MD
1245void hammer_crc_set_blockmap(hammer_blockmap_t blockmap);
1246void hammer_crc_set_volume(hammer_volume_ondisk_t ondisk);
ddfdf542 1247void hammer_crc_set_leaf(void *data, hammer_btree_leaf_elm_t leaf);
19619882
MD
1248
1249int hammer_crc_test_blockmap(hammer_blockmap_t blockmap);
1250int hammer_crc_test_volume(hammer_volume_ondisk_t ondisk);
19619882 1251int hammer_crc_test_btree(hammer_node_ondisk_t ondisk);
ddfdf542 1252int hammer_crc_test_leaf(void *data, hammer_btree_leaf_elm_t leaf);
77062c8a 1253void hkprintf(const char *ctl, ...);
a56cb012
MD
1254udev_t hammer_fsid_to_udev(uuid_t *uuid);
1255
19619882 1256
4a2796f3
MD
1257int hammer_blocksize(int64_t file_offset);
1258int64_t hammer_blockdemarc(int64_t file_offset1, int64_t file_offset2);
1259
0f65be10
MD
1260/*
1261 * Shortcut for _hammer_checkspace(), used all over the code.
1262 */
1263static __inline int
1264hammer_checkspace(hammer_mount_t hmp, int slop)
1265{
1266 return(_hammer_checkspace(hmp, slop, NULL));
1267}
1268
055f5ff8 1269#endif
427e5fc6 1270
af209b0f
MD
1271static __inline void
1272hammer_wait_mem_record(hammer_record_t record)
1273{
1274 hammer_wait_mem_record_ident(record, "hmmwai");
1275}
1276
1277static __inline void
1278hammer_lock_ex(struct hammer_lock *lock)
1279{
1280 hammer_lock_ex_ident(lock, "hmrlck");
1281}
1282
bcac4bbb
MD
1283/*
1284 * Indicate that a B-Tree node is being modified.
1285 */
8cd0a023 1286static __inline void
36f82b23 1287hammer_modify_node_noundo(hammer_transaction_t trans, hammer_node_t node)
bf686dbe 1288{
4c286c36 1289 KKASSERT((node->flags & HAMMER_NODE_CRCBAD) == 0);
36f82b23 1290 hammer_modify_buffer(trans, node->buffer, NULL, 0);
bf686dbe
MD
1291}
1292
1293static __inline void
36f82b23 1294hammer_modify_node_all(hammer_transaction_t trans, struct hammer_node *node)
8cd0a023 1295{
4c286c36 1296 KKASSERT((node->flags & HAMMER_NODE_CRCBAD) == 0);
36f82b23
MD
1297 hammer_modify_buffer(trans, node->buffer,
1298 node->ondisk, sizeof(*node->ondisk));
427e5fc6
MD
1299}
1300
bf686dbe 1301static __inline void
36f82b23
MD
1302hammer_modify_node(hammer_transaction_t trans, hammer_node_t node,
1303 void *base, int len)
bf686dbe 1304{
19619882
MD
1305 hammer_crc_t *crcptr;
1306
bf686dbe
MD
1307 KKASSERT((char *)base >= (char *)node->ondisk &&
1308 (char *)base + len <=
1309 (char *)node->ondisk + sizeof(*node->ondisk));
4c286c36 1310 KKASSERT((node->flags & HAMMER_NODE_CRCBAD) == 0);
36f82b23 1311 hammer_modify_buffer(trans, node->buffer, base, len);
19619882
MD
1312 crcptr = &node->ondisk->crc;
1313 hammer_modify_buffer(trans, node->buffer, crcptr, sizeof(hammer_crc_t));
1314 --node->buffer->io.modify_refs; /* only want one ref */
bf686dbe
MD
1315}
1316
bcac4bbb
MD
1317/*
1318 * Indicate that the specified modifications have been completed.
1319 *
1320 * Do not try to generate the crc here, it's very expensive to do and a
1321 * sequence of insertions or deletions can result in many calls to this
1322 * function on the same node.
1323 */
10a5d1ba
MD
1324static __inline void
1325hammer_modify_node_done(hammer_node_t node)
1326{
bcac4bbb
MD
1327 node->flags |= HAMMER_NODE_CRCGOOD;
1328 if ((node->flags & HAMMER_NODE_NEEDSCRC) == 0) {
1329 node->flags |= HAMMER_NODE_NEEDSCRC;
1330 node->buffer->io.gencrc = 1;
1331 hammer_ref_node(node);
1332 }
10a5d1ba
MD
1333 hammer_modify_buffer_done(node->buffer);
1334}
1335
e8599db1
MD
1336#define hammer_modify_volume_field(trans, vol, field) \
1337 hammer_modify_volume(trans, vol, &(vol)->ondisk->field, \
1338 sizeof((vol)->ondisk->field))
1339
c9b9e29d
MD
1340#define hammer_modify_node_field(trans, node, field) \
1341 hammer_modify_node(trans, node, &(node)->ondisk->field, \
1342 sizeof((node)->ondisk->field))
1343
beec5dc4
MD
1344/*
1345 * The HAMMER_INODE_CAP_DIR_LOCAL_INO capability is set on newly
1346 * created directories for HAMMER version 2 or greater and causes
1347 * directory entries to be placed the inode localization zone in
1348 * the B-Tree instead of the misc zone.
1349 *
1350 * This greatly improves localization between directory entries and
1351 * inodes
1352 */
1353static __inline u_int32_t
1354hammer_dir_localization(hammer_inode_t dip)
1355{
1356 if (dip->ino_data.cap_flags & HAMMER_INODE_CAP_DIR_LOCAL_INO)
1357 return(HAMMER_LOCALIZE_INODE);
1358 else
1359 return(HAMMER_LOCALIZE_MISC);
1360}