HAMMER VFS - REDO implementation base code part 1/many
[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>
66325755 59#include <sys/globaldata.h>
9192654c 60#include <sys/limits.h>
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61
62#include <sys/buf2.h>
855942b6 63#include <sys/signal2.h>
2247fe02 64#include <sys/mplock2.h>
427e5fc6 65#include "hammer_disk.h"
8750964d 66#include "hammer_mount.h"
7dc57964 67#include "hammer_ioctl.h"
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68
69#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
70
71MALLOC_DECLARE(M_HAMMER);
72
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73/*
74 * Kernel trace
75 */
76#if !defined(KTR_HAMMER)
77#define KTR_HAMMER KTR_ALL
78#endif
79KTR_INFO_MASTER_EXTERN(hammer);
80
81/*
82 * Misc structures
83 */
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84struct hammer_mount;
85
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86/*
87 * Key structure used for custom RB tree inode lookups. This prototypes
88 * the function hammer_ino_rb_tree_RB_LOOKUP_INFO(root, info).
89 */
90typedef struct hammer_inode_info {
513ca7d7 91 int64_t obj_id; /* (key) object identifier */
8750964d 92 hammer_tid_t obj_asof; /* (key) snapshot transid or 0 */
ddfdf542 93 u_int32_t obj_localization; /* (key) pseudo-fs */
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94 union {
95 struct hammer_btree_leaf_elm *leaf;
96 } u;
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97} *hammer_inode_info_t;
98
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99typedef enum hammer_transaction_type {
100 HAMMER_TRANS_RO,
101 HAMMER_TRANS_STD,
102 HAMMER_TRANS_FLS
103} hammer_transaction_type_t;
104
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105/*
106 * HAMMER Transaction tracking
107 */
108struct hammer_transaction {
b84de5af 109 hammer_transaction_type_t type;
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110 struct hammer_mount *hmp;
111 hammer_tid_t tid;
ddfdf542 112 u_int64_t time;
dd94f1b1 113 u_int32_t time32;
2f85fa4d 114 int sync_lock_refs;
21fde338 115 int flags;
a89aec1b 116 struct hammer_volume *rootvol;
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117};
118
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119typedef struct hammer_transaction *hammer_transaction_t;
120
21fde338 121#define HAMMER_TRANSF_NEWINODE 0x0001
82010f9f 122#define HAMMER_TRANSF_DIDIO 0x0002
4c286c36 123#define HAMMER_TRANSF_CRCDOM 0x0004 /* EDOM on CRC error, less critical */
21fde338 124
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125/*
126 * HAMMER locks
127 */
427e5fc6 128struct hammer_lock {
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129 int refs; /* active references delay writes */
130 volatile u_int lockval; /* lock count and control bits */
131 struct thread *owner; /* owner if exclusively held */
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132};
133
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134#define HAMMER_LOCKF_EXCLUSIVE 0x40000000
135#define HAMMER_LOCKF_WANTED 0x80000000
136
137static __inline int
138hammer_notlocked(struct hammer_lock *lock)
139{
140 return(lock->lockval == 0);
141}
142
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143static __inline int
144hammer_islocked(struct hammer_lock *lock)
145{
899eb297 146 return(lock->lockval != 0);
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147}
148
149static __inline int
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150hammer_isactive(struct hammer_lock *lock)
151{
152 return(lock->refs != 0);
153}
154
155static __inline int
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156hammer_islastref(struct hammer_lock *lock)
157{
158 return(lock->refs == 1);
159}
c60bb2c5 160
8750964d 161/*
7aa3b8a6 162 * Return if we specifically own the lock exclusively.
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163 */
164static __inline int
7aa3b8a6 165hammer_lock_excl_owned(struct hammer_lock *lock, thread_t td)
6a37e7e4 166{
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167 if ((lock->lockval & HAMMER_LOCKF_EXCLUSIVE) &&
168 lock->owner == td) {
7aa3b8a6 169 return(1);
899eb297 170 }
7aa3b8a6 171 return(0);
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172}
173
174/*
1f07f686 175 * Flush state, used by various structures
ec4e8497 176 */
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177typedef enum hammer_inode_state {
178 HAMMER_FST_IDLE,
179 HAMMER_FST_SETUP,
180 HAMMER_FST_FLUSH
181} hammer_inode_state_t;
ec4e8497 182
1f07f686 183TAILQ_HEAD(hammer_record_list, hammer_record);
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184
185/*
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186 * Pseudo-filesystem extended data tracking
187 */
188struct hammer_pfs_rb_tree;
189struct hammer_pseudofs_inmem;
190RB_HEAD(hammer_pfs_rb_tree, hammer_pseudofs_inmem);
191RB_PROTOTYPE2(hammer_pfs_rb_tree, hammer_pseudofs_inmem, rb_node,
192 hammer_pfs_rb_compare, u_int32_t);
193
194struct hammer_pseudofs_inmem {
195 RB_ENTRY(hammer_pseudofs_inmem) rb_node;
196 struct hammer_lock lock;
197 u_int32_t localization;
ea434b6f 198 hammer_tid_t create_tid;
842e7a70 199 int flags;
a56cb012 200 udev_t fsid_udev;
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201 struct hammer_pseudofs_data pfsd;
202};
203
204typedef struct hammer_pseudofs_inmem *hammer_pseudofs_inmem_t;
205
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206#define HAMMER_PFSM_DELETED 0x0001
207
5fa5c92f 208/*
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209 * Cache object ids. A fixed number of objid cache structures are
210 * created to reserve object id's for newly created files in multiples
211 * of 100,000, localized to a particular directory, and recycled as
212 * needed. This allows parallel create operations in different
213 * directories to retain fairly localized object ids which in turn
214 * improves reblocking performance and layout.
215 */
bf3b416b 216#define OBJID_CACHE_SIZE 1024
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217#define OBJID_CACHE_BULK_BITS 10 /* 10 bits (1024) */
218#define OBJID_CACHE_BULK (32 * 32) /* two level (1024) */
219#define OBJID_CACHE_BULK_MASK (OBJID_CACHE_BULK - 1)
220#define OBJID_CACHE_BULK_MASK64 ((u_int64_t)(OBJID_CACHE_BULK - 1))
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221
222typedef struct hammer_objid_cache {
223 TAILQ_ENTRY(hammer_objid_cache) entry;
224 struct hammer_inode *dip;
5a64efa1 225 hammer_tid_t base_tid;
0729c8c8 226 int count;
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227 u_int32_t bm0;
228 u_int32_t bm1[32];
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229} *hammer_objid_cache_t;
230
231/*
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232 * Associate an inode with a B-Tree node to cache search start positions
233 */
234typedef struct hammer_node_cache {
7a61b85d 235 TAILQ_ENTRY(hammer_node_cache) entry;
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236 struct hammer_node *node;
237 struct hammer_inode *ip;
238} *hammer_node_cache_t;
239
240TAILQ_HEAD(hammer_node_cache_list, hammer_node_cache);
241
242/*
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243 * Structure used to organize flush groups. Flush groups must be
244 * organized into chunks in order to avoid blowing out the UNDO FIFO.
245 * Without this a 'sync' could end up flushing 50,000 inodes in a single
246 * transaction.
247 */
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248struct hammer_fls_rb_tree;
249RB_HEAD(hammer_fls_rb_tree, hammer_inode);
250RB_PROTOTYPE(hammer_fls_rb_tree, hammer_inode, rb_flsnode,
251 hammer_ino_rb_compare);
252
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253struct hammer_flush_group {
254 TAILQ_ENTRY(hammer_flush_group) flush_entry;
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255 struct hammer_fls_rb_tree flush_tree;
256 int unused01;
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257 int total_count; /* record load */
258 int running; /* group is running */
259 int closed;
260 int refs;
261};
262
263typedef struct hammer_flush_group *hammer_flush_group_t;
264
265TAILQ_HEAD(hammer_flush_group_list, hammer_flush_group);
266
267/*
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268 * Structure used to represent an inode in-memory.
269 *
270 * The record and data associated with an inode may be out of sync with
271 * the disk (xDIRTY flags), or not even on the disk at all (ONDISK flag
272 * clear).
273 *
274 * An inode may also hold a cache of unsynchronized records, used for
275 * database and directories only. Unsynchronized regular file data is
276 * stored in the buffer cache.
277 *
278 * NOTE: A file which is created and destroyed within the initial
279 * synchronization period can wind up not doing any disk I/O at all.
280 *
281 * Finally, an inode may cache numerous disk-referencing B-Tree cursors.
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282 */
283struct hammer_ino_rb_tree;
284struct hammer_inode;
285RB_HEAD(hammer_ino_rb_tree, hammer_inode);
286RB_PROTOTYPEX(hammer_ino_rb_tree, INFO, hammer_inode, rb_node,
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287 hammer_ino_rb_compare, hammer_inode_info_t);
288
289struct hammer_rec_rb_tree;
290struct hammer_record;
291RB_HEAD(hammer_rec_rb_tree, hammer_record);
292RB_PROTOTYPEX(hammer_rec_rb_tree, INFO, hammer_record, rb_node,
0832c9bb 293 hammer_rec_rb_compare, hammer_btree_leaf_elm_t);
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294
295TAILQ_HEAD(hammer_node_list, hammer_node);
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296
297struct hammer_inode {
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298 RB_ENTRY(hammer_inode) rb_node;
299 hammer_inode_state_t flush_state;
7a61b85d 300 hammer_flush_group_t flush_group;
ff003b11 301 RB_ENTRY(hammer_inode) rb_flsnode; /* when on flush list */
1f07f686 302 struct hammer_record_list target_list; /* target of dependant recs */
adf01747 303 int64_t obj_id; /* (key) object identifier */
b84de5af 304 hammer_tid_t obj_asof; /* (key) snapshot or 0 */
ddfdf542 305 u_int32_t obj_localization; /* (key) pseudo-fs */
b84de5af 306 struct hammer_mount *hmp;
0729c8c8 307 hammer_objid_cache_t objid_cache;
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308 int flags;
309 int error; /* flush error */
310 int cursor_ip_refs; /* sanity */
47637bff 311 int rsv_recs;
b84de5af 312 struct vnode *vp;
5fa5c92f 313 hammer_pseudofs_inmem_t pfsm;
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314 struct lockf advlock;
315 struct hammer_lock lock; /* sync copy interlock */
b84de5af 316 off_t trunc_off;
11ad5ade 317 struct hammer_btree_leaf_elm ino_leaf; /* in-memory cache */
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318 struct hammer_inode_data ino_data; /* in-memory cache */
319 struct hammer_rec_rb_tree rec_tree; /* in-memory cache */
3214ade6 320 int rec_generation;
39d8fd63 321 struct hammer_node_cache cache[4]; /* search initiate cache */
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322
323 /*
324 * When a demark is created to synchronize an inode to
325 * disk, certain fields are copied so the front-end VOPs
326 * can continue to run in parallel with the synchronization
327 * occuring in the background.
328 */
329 int sync_flags; /* to-sync flags cache */
330 off_t sync_trunc_off; /* to-sync truncation */
a9d52b76 331 off_t save_trunc_off; /* write optimization */
11ad5ade 332 struct hammer_btree_leaf_elm sync_ino_leaf; /* to-sync cache */
b84de5af 333 struct hammer_inode_data sync_ino_data; /* to-sync cache */
9192654c 334 size_t redo_count;
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335};
336
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337typedef struct hammer_inode *hammer_inode_t;
338
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339#define VTOI(vp) ((struct hammer_inode *)(vp)->v_data)
340
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341/*
342 * NOTE: DDIRTY does not include atime or mtime and does not include
343 * write-append size changes. SDIRTY handles write-append size
344 * changes.
345 */
ddfdf542 346 /* (not including atime/mtime) */
9192654c 347#define HAMMER_INODE_DDIRTY 0x0001 /* in-memory ino_data is dirty */
e63644f0 348#define HAMMER_INODE_RSV_INODES 0x0002 /* hmp->rsv_inodes bumped */
7b6ccb11 349#define HAMMER_INODE_CONN_DOWN 0x0004 /* include in downward recursion */
1f07f686 350#define HAMMER_INODE_XDIRTY 0x0008 /* in-memory records */
8cd0a023 351#define HAMMER_INODE_ONDISK 0x0010 /* inode is on-disk (else not yet) */
a89aec1b 352#define HAMMER_INODE_FLUSH 0x0020 /* flush on last ref */
869e8f55 353#define HAMMER_INODE_DELETED 0x0080 /* inode delete (backend) */
76376933 354#define HAMMER_INODE_DELONDISK 0x0100 /* delete synchronized to disk */
d113fda1 355#define HAMMER_INODE_RO 0x0200 /* read-only (because of as-of) */
e8599db1 356#define HAMMER_INODE_VHELD 0x0400 /* vnode held on sync */
0a72edae 357#define HAMMER_INODE_DONDISK 0x0800 /* data records may be on disk */
f3b0f382 358#define HAMMER_INODE_BUFS 0x1000 /* dirty high level bps present */
f153644d 359#define HAMMER_INODE_REFLUSH 0x2000 /* flush on dependancy / reflush */
9f5097dc 360#define HAMMER_INODE_RECLAIM 0x4000 /* trying to reclaim */
059819e3 361#define HAMMER_INODE_FLUSHW 0x8000 /* Someone waiting for flush */
8cd0a023 362
b84de5af 363#define HAMMER_INODE_TRUNCATED 0x00010000
869e8f55 364#define HAMMER_INODE_DELETING 0x00020000 /* inode delete request (frontend)*/
4e17f465 365#define HAMMER_INODE_RESIGNAL 0x00040000 /* re-signal on re-flush */
ddfdf542 366#define HAMMER_INODE_ATIME 0x00100000 /* in-memory atime modified */
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367#define HAMMER_INODE_MTIME 0x00200000 /* in-memory mtime modified */
368#define HAMMER_INODE_WOULDBLOCK 0x00400000 /* re-issue to new flush group */
4c286c36 369#define HAMMER_INODE_DUMMY 0x00800000 /* dummy inode covering bad file */
9192654c 370#define HAMMER_INODE_SDIRTY 0x01000000 /* in-memory ino_data.size is dirty*/
b84de5af 371
9192654c 372#define HAMMER_INODE_MODMASK (HAMMER_INODE_DDIRTY|HAMMER_INODE_SDIRTY| \
11ad5ade 373 HAMMER_INODE_XDIRTY|HAMMER_INODE_BUFS| \
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374 HAMMER_INODE_ATIME|HAMMER_INODE_MTIME| \
375 HAMMER_INODE_TRUNCATED|HAMMER_INODE_DELETING)
1f07f686 376
9192654c 377#define HAMMER_INODE_MODMASK_NOXDIRTY \
1f07f686 378 (HAMMER_INODE_MODMASK & ~HAMMER_INODE_XDIRTY)
0b075555 379
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380#define HAMMER_INODE_MODMASK_NOREDO \
381 (HAMMER_INODE_DDIRTY| \
382 HAMMER_INODE_XDIRTY| \
383 HAMMER_INODE_TRUNCATED|HAMMER_INODE_DELETING)
384
f90dde4c 385#define HAMMER_FLUSH_SIGNAL 0x0001
4e17f465 386#define HAMMER_FLUSH_RECURSION 0x0002
f90dde4c 387
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388/*
389 * Used by the inode reclaim code to pipeline reclaims and avoid
390 * blowing out kernel memory or letting the flusher get too far
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391 * behind. The reclaim wakes up when count reaches 0 or the
392 * timer expires.
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393 */
394struct hammer_reclaim {
395 TAILQ_ENTRY(hammer_reclaim) entry;
82010f9f 396 int count;
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397};
398
ff003b11 399#define HAMMER_RECLAIM_WAIT 4000 /* default vfs.hammer.limit_reclaim */
9f5097dc 400
8750964d 401/*
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402 * Structure used to represent an unsynchronized record in-memory. These
403 * records typically represent directory entries. Only non-historical
404 * records are kept in-memory.
405 *
406 * Records are organized as a per-inode RB-Tree. If the inode is not
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407 * on disk then neither are any records and the in-memory record tree
408 * represents the entire contents of the inode. If the inode is on disk
409 * then the on-disk B-Tree is scanned in parallel with the in-memory
410 * RB-Tree to synthesize the current state of the file.
411 *
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412 * Records are also used to enforce the ordering of directory create/delete
413 * operations. A new inode will not be flushed to disk unless its related
414 * directory entry is also being flushed at the same time. A directory entry
415 * will not be removed unless its related inode is also being removed at the
416 * same time.
8750964d 417 */
1f07f686 418typedef enum hammer_record_type {
e8599db1 419 HAMMER_MEM_RECORD_GENERAL, /* misc record */
930bf163 420 HAMMER_MEM_RECORD_INODE, /* inode record */
1f07f686 421 HAMMER_MEM_RECORD_ADD, /* positive memory cache record */
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422 HAMMER_MEM_RECORD_DEL, /* negative delete-on-disk record */
423 HAMMER_MEM_RECORD_DATA /* bulk-data record w/on-disk ref */
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424} hammer_record_type_t;
425
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426struct hammer_record {
427 RB_ENTRY(hammer_record) rb_node;
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428 TAILQ_ENTRY(hammer_record) target_entry;
429 hammer_inode_state_t flush_state;
7a61b85d 430 hammer_flush_group_t flush_group;
1f07f686 431 hammer_record_type_t type;
a89aec1b 432 struct hammer_lock lock;
0832c9bb 433 struct hammer_reserve *resv;
8cd0a023 434 struct hammer_inode *ip;
1f07f686 435 struct hammer_inode *target_ip;
11ad5ade 436 struct hammer_btree_leaf_elm leaf;
8cd0a023 437 union hammer_data_ondisk *data;
8cd0a023 438 int flags;
e469566b 439 hammer_off_t zone2_offset; /* direct-write only */
8cd0a023 440};
8750964d 441
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442typedef struct hammer_record *hammer_record_t;
443
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444/*
445 * Record flags. Note that FE can only be set by the frontend if the
446 * record has not been interlocked by the backend w/ BE.
447 */
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448#define HAMMER_RECF_ALLOCDATA 0x0001
449#define HAMMER_RECF_ONRBTREE 0x0002
b84de5af 450#define HAMMER_RECF_DELETED_FE 0x0004 /* deleted (frontend) */
d36ec43b 451#define HAMMER_RECF_DELETED_BE 0x0008 /* deleted (backend) */
1b0ab2c3 452#define HAMMER_RECF_COMMITTED 0x0010 /* committed to the B-Tree */
d36ec43b 453#define HAMMER_RECF_INTERLOCK_BE 0x0020 /* backend interlock */
0832c9bb 454#define HAMMER_RECF_WANTED 0x0040 /* wanted by the frontend */
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455#define HAMMER_RECF_CONVERT_DELETE 0x0100 /* special case */
456#define HAMMER_RECF_DIRECT_IO 0x0200 /* related direct I/O running*/
457#define HAMMER_RECF_DIRECT_WAIT 0x0400 /* related direct I/O running*/
e469566b 458#define HAMMER_RECF_DIRECT_INVAL 0x0800 /* buffer alias invalidation */
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459
460/*
83f2a3aa 461 * hammer_create_at_cursor() and hammer_delete_at_cursor() flags.
602c6cb8 462 */
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463#define HAMMER_CREATE_MODE_UMIRROR 0x0001
464#define HAMMER_CREATE_MODE_SYS 0x0002
465
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466#define HAMMER_DELETE_ADJUST 0x0001
467#define HAMMER_DELETE_DESTROY 0x0002
468
469/*
47197d71 470 * In-memory structures representing on-disk structures.
8cd0a023 471 */
8750964d 472struct hammer_volume;
427e5fc6 473struct hammer_buffer;
8cd0a023 474struct hammer_node;
e8599db1 475struct hammer_undo;
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476struct hammer_reserve;
477
8750964d 478RB_HEAD(hammer_vol_rb_tree, hammer_volume);
427e5fc6 479RB_HEAD(hammer_buf_rb_tree, hammer_buffer);
8cd0a023 480RB_HEAD(hammer_nod_rb_tree, hammer_node);
e8599db1 481RB_HEAD(hammer_und_rb_tree, hammer_undo);
0832c9bb 482RB_HEAD(hammer_res_rb_tree, hammer_reserve);
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483
484RB_PROTOTYPE2(hammer_vol_rb_tree, hammer_volume, rb_node,
485 hammer_vol_rb_compare, int32_t);
427e5fc6 486RB_PROTOTYPE2(hammer_buf_rb_tree, hammer_buffer, rb_node,
47197d71 487 hammer_buf_rb_compare, hammer_off_t);
8cd0a023 488RB_PROTOTYPE2(hammer_nod_rb_tree, hammer_node, rb_node,
47197d71 489 hammer_nod_rb_compare, hammer_off_t);
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490RB_PROTOTYPE2(hammer_und_rb_tree, hammer_undo, rb_node,
491 hammer_und_rb_compare, hammer_off_t);
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492RB_PROTOTYPE2(hammer_res_rb_tree, hammer_reserve, rb_node,
493 hammer_res_rb_compare, hammer_off_t);
8750964d 494
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495/*
496 * IO management - embedded at the head of various in-memory structures
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497 *
498 * VOLUME - hammer_volume containing meta-data
499 * META_BUFFER - hammer_buffer containing meta-data
500 * DATA_BUFFER - hammer_buffer containing pure-data
501 *
502 * Dirty volume headers and dirty meta-data buffers are locked until the
503 * flusher can sequence them out. Dirty pure-data buffers can be written.
504 * Clean buffers can be passively released.
66325755 505 */
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506typedef enum hammer_io_type {
507 HAMMER_STRUCTURE_VOLUME,
508 HAMMER_STRUCTURE_META_BUFFER,
509 HAMMER_STRUCTURE_UNDO_BUFFER,
510 HAMMER_STRUCTURE_DATA_BUFFER
511} hammer_io_type_t;
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512
513union hammer_io_structure;
055f5ff8 514struct hammer_io;
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515
516struct worklist {
517 LIST_ENTRY(worklist) node;
518};
519
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520TAILQ_HEAD(hammer_io_list, hammer_io);
521typedef struct hammer_io_list *hammer_io_list_t;
055f5ff8 522
66325755 523struct hammer_io {
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524 struct worklist worklist;
525 struct hammer_lock lock;
526 enum hammer_io_type type;
527 struct hammer_mount *hmp;
748efb59 528 struct hammer_volume *volume;
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529 TAILQ_ENTRY(hammer_io) mod_entry; /* list entry if modified */
530 hammer_io_list_t mod_list;
531 struct buf *bp;
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532 int64_t offset; /* zone-2 offset */
533 int bytes; /* buffer cache buffer size */
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534 int loading; /* loading/unloading interlock */
535 int modify_refs;
536
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537 u_int modified : 1; /* bp's data was modified */
538 u_int released : 1; /* bp released (w/ B_LOCKED set) */
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539 u_int running : 1; /* bp write IO in progress */
540 u_int waiting : 1; /* someone is waiting on us */
b33e2cc0 541 u_int validated : 1; /* ondisk has been validated */
b58c6388 542 u_int waitdep : 1; /* flush waits for dependancies */
51c35492 543 u_int recovered : 1; /* has recovery ref */
9f5097dc 544 u_int waitmod : 1; /* waiting for modify_refs */
cebe9493 545 u_int reclaim : 1; /* reclaim requested */
bcac4bbb 546 u_int gencrc : 1; /* crc needs to be generated */
cdb6e4e6 547 u_int ioerror : 1; /* abort on io-error */
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548};
549
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550typedef struct hammer_io *hammer_io_t;
551
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552#define HAMMER_CLUSTER_SIZE (64 * 1024)
553#if HAMMER_CLUSTER_SIZE > MAXBSIZE
554#undef HAMMER_CLUSTER_SIZE
555#define HAMMER_CLUSTER_SIZE MAXBSIZE
556#endif
557#define HAMMER_CLUSTER_BUFS (HAMMER_CLUSTER_SIZE / HAMMER_BUFSIZE)
558
66325755 559/*
8cd0a023 560 * In-memory volume representing on-disk buffer
66325755 561 */
8750964d 562struct hammer_volume {
66325755 563 struct hammer_io io;
8750964d 564 RB_ENTRY(hammer_volume) rb_node;
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565 struct hammer_volume_ondisk *ondisk;
566 int32_t vol_no;
fbc6e32a 567 int64_t nblocks; /* note: special calculation for statfs */
47197d71 568 int64_t buffer_base; /* base offset of buffer 0 */
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569 hammer_off_t maxbuf_off; /* Maximum buffer offset (zone-2) */
570 hammer_off_t maxraw_off; /* Maximum raw offset for device */
c60bb2c5 571 char *vol_name;
8750964d 572 struct vnode *devvp;
427e5fc6 573 int vol_flags;
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574};
575
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576typedef struct hammer_volume *hammer_volume_t;
577
66325755 578/*
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579 * In-memory buffer (other then volume, super-cluster, or cluster),
580 * representing an on-disk buffer.
66325755 581 */
427e5fc6 582struct hammer_buffer {
66325755 583 struct hammer_io io;
427e5fc6 584 RB_ENTRY(hammer_buffer) rb_node;
47197d71 585 void *ondisk;
34d829f7 586 hammer_off_t zoneX_offset;
0832c9bb 587 hammer_off_t zone2_offset;
cebe9493 588 struct hammer_reserve *resv;
8cd0a023 589 struct hammer_node_list clist;
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590};
591
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592typedef struct hammer_buffer *hammer_buffer_t;
593
594/*
595 * In-memory B-Tree node, representing an on-disk B-Tree node.
596 *
597 * This is a hang-on structure which is backed by a hammer_buffer,
598 * indexed by a hammer_cluster, and used for fine-grained locking of
599 * B-Tree nodes in order to properly control lock ordering. A hammer_buffer
600 * can contain multiple nodes representing wildly disassociated portions
601 * of the B-Tree so locking cannot be done on a buffer-by-buffer basis.
602 *
603 * This structure uses a cluster-relative index to reduce the number
604 * of layers required to access it, and also because all on-disk B-Tree
605 * references are cluster-relative offsets.
606 */
607struct hammer_node {
608 struct hammer_lock lock; /* node-by-node lock */
609 TAILQ_ENTRY(hammer_node) entry; /* per-buffer linkage */
610 RB_ENTRY(hammer_node) rb_node; /* per-cluster linkage */
47197d71 611 hammer_off_t node_offset; /* full offset spec */
40043e7f 612 struct hammer_mount *hmp;
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613 struct hammer_buffer *buffer; /* backing buffer */
614 hammer_node_ondisk_t ondisk; /* ptr to on-disk structure */
b3bad96f 615 TAILQ_HEAD(, hammer_cursor) cursor_list; /* deadlock recovery */
bcac4bbb 616 struct hammer_node_cache_list cache_list; /* passive caches */
b3deaf57 617 int flags;
740d8317 618 int loading; /* load interlock */
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619};
620
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621#define HAMMER_NODE_DELETED 0x0001
622#define HAMMER_NODE_FLUSH 0x0002
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623#define HAMMER_NODE_CRCGOOD 0x0004
624#define HAMMER_NODE_NEEDSCRC 0x0008
c82af904 625#define HAMMER_NODE_NEEDSMIRROR 0x0010
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626#define HAMMER_NODE_CRCBAD 0x0020
627
628#define HAMMER_NODE_CRCANY (HAMMER_NODE_CRCGOOD | HAMMER_NODE_CRCBAD)
b3deaf57 629
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630typedef struct hammer_node *hammer_node_t;
631
632/*
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633 * List of locked nodes. This structure is used to lock potentially large
634 * numbers of nodes as an aid for complex B-Tree operations.
b33e2cc0 635 */
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636struct hammer_node_lock;
637TAILQ_HEAD(hammer_node_lock_list, hammer_node_lock);
638
639struct hammer_node_lock {
640 TAILQ_ENTRY(hammer_node_lock) entry;
641 struct hammer_node_lock_list list;
642 struct hammer_node_lock *parent;
b33e2cc0 643 hammer_node_t node;
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644 hammer_node_ondisk_t copy; /* copy of on-disk data */
645 int index; /* index of this node in parent */
646 int count; /* count children */
647 int flags;
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648};
649
1775b6a0 650typedef struct hammer_node_lock *hammer_node_lock_t;
b33e2cc0 651
1775b6a0 652#define HAMMER_NODE_LOCK_UPDATED 0x0001
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653
654/*
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655 * Common I/O management structure - embedded in in-memory structures
656 * which are backed by filesystem buffers.
657 */
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658union hammer_io_structure {
659 struct hammer_io io;
660 struct hammer_volume volume;
66325755 661 struct hammer_buffer buffer;
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662};
663
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664typedef union hammer_io_structure *hammer_io_structure_t;
665
bf686dbe 666/*
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667 * The reserve structure prevents the blockmap from allocating
668 * out of a reserved bigblock. Such reservations are used by
669 * the direct-write mechanism.
670 *
671 * The structure is also used to hold off on reallocations of
672 * big blocks from the freemap until flush dependancies have
673 * been dealt with.
674 */
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675struct hammer_reserve {
676 RB_ENTRY(hammer_reserve) rb_node;
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677 TAILQ_ENTRY(hammer_reserve) delay_entry;
678 int flush_group;
cb51be26 679 int flags;
0832c9bb 680 int refs;
cb51be26 681 int zone;
df301614 682 int append_off;
cebe9493 683 hammer_off_t zone_offset;
0832c9bb
MD
684};
685
686typedef struct hammer_reserve *hammer_reserve_t;
687
cb51be26 688#define HAMMER_RESF_ONDELAY 0x0001
5e435c92 689#define HAMMER_RESF_LAYER2FREE 0x0002
cb51be26 690
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691#include "hammer_cursor.h"
692
8750964d 693/*
cebe9493
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694 * The undo structure tracks recent undos to avoid laying down duplicate
695 * undos within a flush group, saving us a significant amount of overhead.
696 *
697 * This is strictly a heuristic.
e8599db1 698 */
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699#define HAMMER_MAX_UNDOS 1024
700#define HAMMER_MAX_FLUSHERS 4
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701
702struct hammer_undo {
703 RB_ENTRY(hammer_undo) rb_node;
704 TAILQ_ENTRY(hammer_undo) lru_entry;
705 hammer_off_t offset;
706 int bytes;
707};
708
709typedef struct hammer_undo *hammer_undo_t;
710
af209b0f 711struct hammer_flusher_info;
7a61b85d 712TAILQ_HEAD(hammer_flusher_info_list, hammer_flusher_info);
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713
714struct hammer_flusher {
715 int signal; /* flusher thread sequencer */
716 int act; /* currently active flush group */
717 int done; /* set to act when complete */
718 int next; /* next flush group */
719 int group_lock; /* lock sequencing of the next flush */
720 int exiting; /* request master exit */
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721 thread_t td; /* master flusher thread */
722 hammer_tid_t tid; /* last flushed transaction id */
723 int finalize_want; /* serialize finalization */
724 struct hammer_lock finalize_lock; /* serialize finalization */
725 struct hammer_transaction trans; /* shared transaction */
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726 struct hammer_flusher_info_list run_list;
727 struct hammer_flusher_info_list ready_list;
da2da375
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728};
729
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730#define HAMMER_FLUSH_UNDOS_RELAXED 0
731#define HAMMER_FLUSH_UNDOS_FORCED 1
732#define HAMMER_FLUSH_UNDOS_AUTO 2
da2da375 733/*
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734 * Internal hammer mount data structure
735 */
736struct hammer_mount {
737 struct mount *mp;
27ea2398 738 /*struct vnode *rootvp;*/
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739 struct hammer_ino_rb_tree rb_inos_root;
740 struct hammer_vol_rb_tree rb_vols_root;
40043e7f 741 struct hammer_nod_rb_tree rb_nods_root;
e8599db1 742 struct hammer_und_rb_tree rb_undo_root;
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743 struct hammer_res_rb_tree rb_resv_root;
744 struct hammer_buf_rb_tree rb_bufs_root;
5fa5c92f 745 struct hammer_pfs_rb_tree rb_pfsm_root;
8750964d 746 struct hammer_volume *rootvol;
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747 struct hammer_base_elm root_btree_beg;
748 struct hammer_base_elm root_btree_end;
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749
750 struct malloc_type *m_misc;
751 struct malloc_type *m_inodes;
752
cdb6e4e6 753 int flags; /* HAMMER_MOUNT_xxx flags */
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754 int hflags;
755 int ronly;
756 int nvolumes;
d26d0ae9 757 int volume_iterator;
732a1697 758 int master_id; /* -1 or 0-15 - clustering and mirroring */
44a83111 759 int version; /* hammer filesystem version to use */
e63644f0 760 int rsv_inodes; /* reserved space due to dirty inodes */
a7e9bef1 761 int64_t rsv_databytes; /* reserved space due to record data */
e63644f0 762 int rsv_recs; /* reserved space due to dirty records */
a7e9bef1 763 int rsv_fromdelay; /* bigblocks reserved due to flush delay */
7a61b85d 764 int undo_rec_limit; /* based on size of undo area */
4a2796f3
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765 int last_newrecords;
766 int count_newrecords;
da2da375 767
865c9609
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768 int volume_to_remove; /* volume that is currently being removed */
769
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770 int inode_reclaims; /* inodes pending reclaim by flusher */
771 int count_inodes; /* total number of inodes */
af209b0f 772 int count_iqueued; /* inodes queued to flusher */
da2da375
MD
773
774 struct hammer_flusher flusher;
775
855942b6 776 u_int check_interrupt;
3e583440 777 u_int check_yield;
8750964d 778 uuid_t fsid;
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MD
779 struct hammer_io_list volu_list; /* dirty undo buffers */
780 struct hammer_io_list undo_list; /* dirty undo buffers */
781 struct hammer_io_list data_list; /* dirty data buffers */
0832c9bb 782 struct hammer_io_list alt_data_list; /* dirty data buffers */
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783 struct hammer_io_list meta_list; /* dirty meta bufs */
784 struct hammer_io_list lose_list; /* loose buffers */
f5a07a7a
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785 int locked_dirty_space; /* meta/volu count */
786 int io_running_space;
0729c8c8 787 int objid_cache_count;
cdb6e4e6
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788 int error; /* critical I/O error */
789 struct krate krate; /* rate limited kprintf */
ddfdf542 790 hammer_tid_t asof; /* snapshot mount */
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791 hammer_tid_t next_tid;
792 hammer_tid_t flush_tid1; /* flusher tid sequencing */
793 hammer_tid_t flush_tid2; /* flusher tid sequencing */
e63644f0 794 int64_t copy_stat_freebigblocks; /* number of free bigblocks */
02428fb6 795 u_int32_t undo_seqno; /* UNDO/REDO FIFO seqno */
e63644f0 796
513ca7d7 797 struct netexport export;
9480ff55 798 struct hammer_lock sync_lock;
c9b9e29d 799 struct hammer_lock free_lock;
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800 struct hammer_lock undo_lock;
801 struct hammer_lock blkmap_lock;
83f2a3aa 802 struct hammer_lock snapshot_lock;
52e547e3 803 struct hammer_lock volume_lock;
0729c8c8 804 struct hammer_blockmap blockmap[HAMMER_MAX_ZONES];
e8599db1
MD
805 struct hammer_undo undos[HAMMER_MAX_UNDOS];
806 int undo_alloc;
807 TAILQ_HEAD(, hammer_undo) undo_lru_list;
cebe9493 808 TAILQ_HEAD(, hammer_reserve) delay_list;
7a61b85d 809 struct hammer_flush_group_list flush_group_list;
7b6ccb11 810 hammer_flush_group_t next_flush_group;
0729c8c8 811 TAILQ_HEAD(, hammer_objid_cache) objid_cache_list;
7bc5b8c2 812 TAILQ_HEAD(, hammer_reclaim) reclaim_list;
8750964d
MD
813};
814
8cd0a023 815typedef struct hammer_mount *hammer_mount_t;
8750964d 816
cdb6e4e6 817#define HAMMER_MOUNT_CRITICAL_ERROR 0x0001
82010f9f 818#define HAMMER_MOUNT_FLUSH_RECOVERY 0x0002
9f5097dc 819
fbc6e32a
MD
820struct hammer_sync_info {
821 int error;
822 int waitfor;
823};
824
8750964d
MD
825#endif
826
a7e9bef1
MD
827/*
828 * checkspace slop (8MB chunks), higher numbers are more conservative.
829 */
93291532
MD
830#define HAMMER_CHKSPC_REBLOCK 25
831#define HAMMER_CHKSPC_MIRROR 20
832#define HAMMER_CHKSPC_WRITE 20
833#define HAMMER_CHKSPC_CREATE 20
834#define HAMMER_CHKSPC_REMOVE 10
7b6ccb11 835#define HAMMER_CHKSPC_EMERGENCY 0
a7e9bef1 836
8750964d
MD
837#if defined(_KERNEL)
838
839extern struct vop_ops hammer_vnode_vops;
7a04d74f
MD
840extern struct vop_ops hammer_spec_vops;
841extern struct vop_ops hammer_fifo_vops;
66325755 842extern struct bio_ops hammer_bioops;
427e5fc6 843
2f85fa4d 844extern int hammer_debug_io;
d5ef456e 845extern int hammer_debug_general;
77062c8a 846extern int hammer_debug_debug;
e8599db1 847extern int hammer_debug_inode;
7d683b0f 848extern int hammer_debug_locks;
b3deaf57 849extern int hammer_debug_btree;
d113fda1 850extern int hammer_debug_tid;
b33e2cc0 851extern int hammer_debug_recover;
46fe7ae1 852extern int hammer_debug_recover_faults;
fc73edd8 853extern int hammer_debug_critical;
1b0ab2c3 854extern int hammer_cluster_enable;
7a61b85d 855extern int hammer_count_fsyncs;
b3deaf57 856extern int hammer_count_inodes;
af209b0f 857extern int hammer_count_iqueued;
9f5097dc 858extern int hammer_count_reclaiming;
b3deaf57
MD
859extern int hammer_count_records;
860extern int hammer_count_record_datas;
861extern int hammer_count_volumes;
b3deaf57
MD
862extern int hammer_count_buffers;
863extern int hammer_count_nodes;
a7e9bef1 864extern int64_t hammer_count_extra_space_used;
cb51be26
MD
865extern int64_t hammer_stats_btree_lookups;
866extern int64_t hammer_stats_btree_searches;
867extern int64_t hammer_stats_btree_inserts;
868extern int64_t hammer_stats_btree_deletes;
869extern int64_t hammer_stats_btree_elements;
870extern int64_t hammer_stats_btree_splits;
871extern int64_t hammer_stats_btree_iterations;
39d8fd63 872extern int64_t hammer_stats_btree_root_iterations;
cb51be26 873extern int64_t hammer_stats_record_iterations;
ce0138a6
MD
874extern int64_t hammer_stats_file_read;
875extern int64_t hammer_stats_file_write;
876extern int64_t hammer_stats_file_iopsr;
877extern int64_t hammer_stats_file_iopsw;
878extern int64_t hammer_stats_disk_read;
879extern int64_t hammer_stats_disk_write;
880extern int64_t hammer_stats_inode_flushes;
881extern int64_t hammer_stats_commits;
89e744ce 882extern int64_t hammer_stats_undo;
6048b411 883extern int64_t hammer_stats_redo;
f5a07a7a 884extern int hammer_count_dirtybufspace;
a99b9ea2 885extern int hammer_count_refedbufs;
0832c9bb 886extern int hammer_count_reservations;
a99b9ea2
MD
887extern int hammer_count_io_running_read;
888extern int hammer_count_io_running_write;
889extern int hammer_count_io_locked;
f5a07a7a 890extern int hammer_limit_dirtybufspace;
47637bff 891extern int hammer_limit_recs;
de996e86 892extern int hammer_limit_inode_recs;
ff003b11 893extern int hammer_limit_reclaim;
9192654c 894extern int hammer_limit_redo;
1f07f686 895extern int hammer_bio_count;
cb51be26 896extern int hammer_verify_zone;
1b0ab2c3 897extern int hammer_verify_data;
cb51be26 898extern int hammer_write_mode;
3e583440 899extern int hammer_yield_check;
6f3d87c0 900extern int hammer_fsync_mode;
21fde338 901extern int hammer_autoflush;
7d683b0f 902extern int64_t hammer_contention_count;
b3deaf57 903
cdb6e4e6
MD
904void hammer_critical_error(hammer_mount_t hmp, hammer_inode_t ip,
905 int error, const char *msg);
8750964d
MD
906int hammer_vop_inactive(struct vop_inactive_args *);
907int hammer_vop_reclaim(struct vop_reclaim_args *);
e8599db1 908int hammer_get_vnode(struct hammer_inode *ip, struct vnode **vpp);
36f82b23 909struct hammer_inode *hammer_get_inode(hammer_transaction_t trans,
adf01747 910 hammer_inode_t dip, int64_t obj_id,
ddfdf542
MD
911 hammer_tid_t asof, u_int32_t localization,
912 int flags, int *errorp);
4c286c36
MD
913struct hammer_inode *hammer_get_dummy_inode(hammer_transaction_t trans,
914 hammer_inode_t dip, int64_t obj_id,
915 hammer_tid_t asof, u_int32_t localization,
916 int flags, int *errorp);
39d8fd63
MD
917struct hammer_inode *hammer_find_inode(hammer_transaction_t trans,
918 int64_t obj_id, hammer_tid_t asof,
919 u_int32_t localization);
43c665ae
MD
920void hammer_scan_inode_snapshots(hammer_mount_t hmp,
921 hammer_inode_info_t iinfo,
922 int (*callback)(hammer_inode_t ip, void *data),
923 void *data);
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MD
924void hammer_put_inode(struct hammer_inode *ip);
925void hammer_put_inode_ref(struct hammer_inode *ip);
4a2796f3 926void hammer_inode_waitreclaims(hammer_mount_t hmp);
82010f9f 927void hammer_inode_waithard(hammer_mount_t hmp);
66325755 928
8cd0a023 929int hammer_unload_volume(hammer_volume_t volume, void *data __unused);
51c35492
MD
930int hammer_adjust_volume_mode(hammer_volume_t volume, void *data __unused);
931
07be83b8 932int hammer_unload_buffer(hammer_buffer_t buffer, void *data);
7c19b529
MN
933int hammer_install_volume(hammer_mount_t hmp, const char *volname,
934 struct vnode *devvp);
1b0ab2c3 935int hammer_mountcheck_volumes(hammer_mount_t hmp);
8cd0a023 936
e469566b 937int hammer_mem_add(hammer_record_t record);
45a014dc 938int hammer_ip_lookup(hammer_cursor_t cursor);
4e17f465 939int hammer_ip_first(hammer_cursor_t cursor);
a89aec1b 940int hammer_ip_next(hammer_cursor_t cursor);
8cd0a023 941int hammer_ip_resolve_data(hammer_cursor_t cursor);
e63644f0
MD
942int hammer_ip_delete_record(hammer_cursor_t cursor, hammer_inode_t ip,
943 hammer_tid_t tid);
83f2a3aa
MD
944int hammer_create_at_cursor(hammer_cursor_t cursor,
945 hammer_btree_leaf_elm_t leaf, void *udata, int mode);
602c6cb8 946int hammer_delete_at_cursor(hammer_cursor_t cursor, int delete_flags,
842e7a70
MD
947 hammer_tid_t delete_tid, u_int32_t delete_ts,
948 int track, int64_t *stat_bytes);
b3deaf57 949int hammer_ip_check_directory_empty(hammer_transaction_t trans,
98f7132d 950 hammer_inode_t ip);
fbc6e32a 951int hammer_sync_hmp(hammer_mount_t hmp, int waitfor);
f36a9737
MD
952int hammer_queue_inodes_flusher(hammer_mount_t hmp, int waitfor);
953
8cd0a023 954hammer_record_t
11ad5ade 955 hammer_alloc_mem_record(hammer_inode_t ip, int data_len);
d36ec43b 956void hammer_flush_record_done(hammer_record_t record, int error);
af209b0f 957void hammer_wait_mem_record_ident(hammer_record_t record, const char *ident);
b3deaf57 958void hammer_rel_mem_record(hammer_record_t record);
b84de5af 959
6a37e7e4 960int hammer_cursor_up(hammer_cursor_t cursor);
f36a9737 961int hammer_cursor_up_locked(hammer_cursor_t cursor);
8cd0a023 962int hammer_cursor_down(hammer_cursor_t cursor);
6a37e7e4 963int hammer_cursor_upgrade(hammer_cursor_t cursor);
7bc5b8c2 964int hammer_cursor_upgrade_node(hammer_cursor_t cursor);
6a37e7e4 965void hammer_cursor_downgrade(hammer_cursor_t cursor);
32c90105
MD
966int hammer_cursor_seek(hammer_cursor_t cursor, hammer_node_t node,
967 int index);
af209b0f 968void hammer_lock_ex_ident(struct hammer_lock *lock, const char *ident);
8cd0a023
MD
969int hammer_lock_ex_try(struct hammer_lock *lock);
970void hammer_lock_sh(struct hammer_lock *lock);
47637bff 971int hammer_lock_sh_try(struct hammer_lock *lock);
6a37e7e4
MD
972int hammer_lock_upgrade(struct hammer_lock *lock);
973void hammer_lock_downgrade(struct hammer_lock *lock);
b3bad96f 974int hammer_lock_status(struct hammer_lock *lock);
427e5fc6 975void hammer_unlock(struct hammer_lock *lock);
66325755
MD
976void hammer_ref(struct hammer_lock *lock);
977void hammer_unref(struct hammer_lock *lock);
8cd0a023 978
2f85fa4d
MD
979void hammer_sync_lock_ex(hammer_transaction_t trans);
980void hammer_sync_lock_sh(hammer_transaction_t trans);
47637bff 981int hammer_sync_lock_sh_try(hammer_transaction_t trans);
2f85fa4d
MD
982void hammer_sync_unlock(hammer_transaction_t trans);
983
66325755 984u_int32_t hammer_to_unix_xid(uuid_t *uuid);
8cd0a023 985void hammer_guid_to_uuid(uuid_t *uuid, u_int32_t guid);
ddfdf542
MD
986void hammer_time_to_timespec(u_int64_t xtime, struct timespec *ts);
987u_int64_t hammer_timespec_to_time(struct timespec *ts);
bc6c1f13
MD
988int hammer_str_to_tid(const char *str, int *ispfsp,
989 hammer_tid_t *tidp, u_int32_t *localizationp);
990int hammer_is_atatext(const char *name, int len);
5a64efa1
MD
991hammer_tid_t hammer_alloc_objid(hammer_mount_t hmp, hammer_inode_t dip,
992 int64_t namekey);
0729c8c8
MD
993void hammer_clear_objid(hammer_inode_t dip);
994void hammer_destroy_objid_cache(hammer_mount_t hmp);
8cd0a023 995
e8599db1 996int hammer_enter_undo_history(hammer_mount_t hmp, hammer_off_t offset,
b3bad96f 997 int bytes);
e8599db1 998void hammer_clear_undo_history(hammer_mount_t hmp);
66325755 999enum vtype hammer_get_vnode_type(u_int8_t obj_type);
6b4f890b 1000int hammer_get_dtype(u_int8_t obj_type);
66325755 1001u_int8_t hammer_get_obj_type(enum vtype vtype);
5e435c92
MD
1002int64_t hammer_directory_namekey(hammer_inode_t dip, const void *name, int len,
1003 u_int32_t *max_iterationsp);
e63644f0 1004int hammer_nohistory(hammer_inode_t ip);
427e5fc6 1005
36f82b23 1006int hammer_init_cursor(hammer_transaction_t trans, hammer_cursor_t cursor,
b3bad96f 1007 hammer_node_cache_t cache, hammer_inode_t ip);
4e17f465 1008void hammer_normalize_cursor(hammer_cursor_t cursor);
8cd0a023 1009void hammer_done_cursor(hammer_cursor_t cursor);
b3bad96f 1010int hammer_recover_cursor(hammer_cursor_t cursor);
982be4bf
MD
1011void hammer_unlock_cursor(hammer_cursor_t cursor);
1012int hammer_lock_cursor(hammer_cursor_t cursor);
3f43fb33
MD
1013hammer_cursor_t hammer_push_cursor(hammer_cursor_t ocursor);
1014void hammer_pop_cursor(hammer_cursor_t ocursor, hammer_cursor_t ncursor);
b3bad96f
MD
1015
1016void hammer_cursor_replaced_node(hammer_node_t onode, hammer_node_t nnode);
1017void hammer_cursor_removed_node(hammer_node_t onode, hammer_node_t parent,
1018 int index);
1019void hammer_cursor_split_node(hammer_node_t onode, hammer_node_t nnode,
1020 int index);
1775b6a0
MD
1021void hammer_cursor_moved_element(hammer_node_t onode, hammer_node_t nnode,
1022 int oindex, int nindex);
1023void hammer_cursor_parent_changed(hammer_node_t node, hammer_node_t oparent,
1024 hammer_node_t nparent, int nindex);
b3bad96f
MD
1025void hammer_cursor_inserted_element(hammer_node_t node, int index);
1026void hammer_cursor_deleted_element(hammer_node_t node, int index);
8cd0a023
MD
1027
1028int hammer_btree_lookup(hammer_cursor_t cursor);
d26d0ae9 1029int hammer_btree_first(hammer_cursor_t cursor);
32c90105 1030int hammer_btree_last(hammer_cursor_t cursor);
8cd0a023
MD
1031int hammer_btree_extract(hammer_cursor_t cursor, int flags);
1032int hammer_btree_iterate(hammer_cursor_t cursor);
32c90105 1033int hammer_btree_iterate_reverse(hammer_cursor_t cursor);
11ad5ade 1034int hammer_btree_insert(hammer_cursor_t cursor,
602c6cb8 1035 hammer_btree_leaf_elm_t elm, int *doprop);
8cd0a023 1036int hammer_btree_delete(hammer_cursor_t cursor);
4c038e17
MD
1037void hammer_btree_do_propagation(hammer_cursor_t cursor,
1038 hammer_pseudofs_inmem_t pfsm,
602c6cb8 1039 hammer_btree_leaf_elm_t leaf);
8cd0a023 1040int hammer_btree_cmp(hammer_base_elm_t key1, hammer_base_elm_t key2);
d26d0ae9 1041int hammer_btree_chkts(hammer_tid_t ts, hammer_base_elm_t key);
32c90105
MD
1042int hammer_btree_correct_rhb(hammer_cursor_t cursor, hammer_tid_t tid);
1043int hammer_btree_correct_lhb(hammer_cursor_t cursor, hammer_tid_t tid);
1044
2f85fa4d
MD
1045int btree_set_parent(hammer_transaction_t trans, hammer_node_t node,
1046 hammer_btree_elm_t elm);
1775b6a0
MD
1047void hammer_node_lock_init(hammer_node_lock_t parent, hammer_node_t node);
1048int hammer_btree_lock_children(hammer_cursor_t cursor, int depth,
1049 hammer_node_lock_t parent);
1050void hammer_btree_lock_copy(hammer_cursor_t cursor,
1051 hammer_node_lock_t parent);
7ddc70d1 1052int hammer_btree_sync_copy(hammer_cursor_t cursor,
1775b6a0 1053 hammer_node_lock_t parent);
bac808fe 1054void hammer_btree_unlock_children(hammer_cursor_t cursor,
1775b6a0 1055 hammer_node_lock_t parent);
bcac4bbb 1056int hammer_btree_search_node(hammer_base_elm_t elm, hammer_node_ondisk_t node);
82010f9f
MD
1057hammer_node_t hammer_btree_get_parent(hammer_transaction_t trans,
1058 hammer_node_t node, int *parent_indexp,
c82af904 1059 int *errorp, int try_exclusive);
b33e2cc0 1060
c0ade690
MD
1061void hammer_print_btree_node(hammer_node_ondisk_t ondisk);
1062void hammer_print_btree_elm(hammer_btree_elm_t elm, u_int8_t type, int i);
8750964d 1063
47197d71
MD
1064void *hammer_bread(struct hammer_mount *hmp, hammer_off_t off,
1065 int *errorp, struct hammer_buffer **bufferp);
1066void *hammer_bnew(struct hammer_mount *hmp, hammer_off_t off,
1067 int *errorp, struct hammer_buffer **bufferp);
4a2796f3
MD
1068void *hammer_bread_ext(struct hammer_mount *hmp, hammer_off_t off, int bytes,
1069 int *errorp, struct hammer_buffer **bufferp);
1070void *hammer_bnew_ext(struct hammer_mount *hmp, hammer_off_t off, int bytes,
1071 int *errorp, struct hammer_buffer **bufferp);
8cd0a023
MD
1072
1073hammer_volume_t hammer_get_root_volume(hammer_mount_t hmp, int *errorp);
427e5fc6 1074
8cd0a023 1075hammer_volume_t hammer_get_volume(hammer_mount_t hmp,
427e5fc6 1076 int32_t vol_no, int *errorp);
4a2796f3
MD
1077hammer_buffer_t hammer_get_buffer(hammer_mount_t hmp, hammer_off_t buf_offset,
1078 int bytes, int isnew, int *errorp);
1b0ab2c3
MD
1079void hammer_sync_buffers(hammer_mount_t hmp,
1080 hammer_off_t base_offset, int bytes);
362ec2dc 1081int hammer_del_buffers(hammer_mount_t hmp,
1b0ab2c3 1082 hammer_off_t base_offset,
362ec2dc
MD
1083 hammer_off_t zone2_offset, int bytes,
1084 int report_conflicts);
8cd0a023 1085
fbc6e32a 1086int hammer_ref_volume(hammer_volume_t volume);
8cd0a023
MD
1087int hammer_ref_buffer(hammer_buffer_t buffer);
1088void hammer_flush_buffer_nodes(hammer_buffer_t buffer);
1089
8cd0a023 1090void hammer_rel_volume(hammer_volume_t volume, int flush);
8cd0a023
MD
1091void hammer_rel_buffer(hammer_buffer_t buffer, int flush);
1092
513ca7d7
MD
1093int hammer_vfs_export(struct mount *mp, int op,
1094 const struct export_args *export);
82010f9f
MD
1095hammer_node_t hammer_get_node(hammer_transaction_t trans,
1096 hammer_off_t node_offset, int isnew, int *errorp);
740d8317 1097void hammer_ref_node(hammer_node_t node);
4c286c36 1098hammer_node_t hammer_ref_node_safe(hammer_transaction_t trans,
bcac4bbb 1099 hammer_node_cache_t cache, int *errorp);
8cd0a023 1100void hammer_rel_node(hammer_node_t node);
36f82b23
MD
1101void hammer_delete_node(hammer_transaction_t trans,
1102 hammer_node_t node);
bcac4bbb
MD
1103void hammer_cache_node(hammer_node_cache_t cache,
1104 hammer_node_t node);
1105void hammer_uncache_node(hammer_node_cache_t cache);
8cd0a023
MD
1106void hammer_flush_node(hammer_node_t node);
1107
427e5fc6
MD
1108void hammer_dup_buffer(struct hammer_buffer **bufferp,
1109 struct hammer_buffer *buffer);
df2ccbac
MD
1110hammer_node_t hammer_alloc_btree(hammer_transaction_t trans,
1111 hammer_off_t hint, int *errorp);
36f82b23 1112void *hammer_alloc_data(hammer_transaction_t trans, int32_t data_len,
bf3b416b 1113 u_int16_t rec_type, hammer_off_t *data_offsetp,
df2ccbac
MD
1114 struct hammer_buffer **data_bufferp,
1115 hammer_off_t hint, int *errorp);
bf686dbe 1116
02428fb6 1117int hammer_generate_undo(hammer_transaction_t trans,
059819e3 1118 hammer_off_t zone1_offset, void *base, int len);
6048b411
MD
1119int hammer_generate_redo(hammer_transaction_t trans, hammer_inode_t ip,
1120 hammer_off_t file_offset, void *base, int len);
02428fb6 1121int hammer_upgrade_undo_4(hammer_transaction_t trans);
427e5fc6 1122
66325755 1123void hammer_put_volume(struct hammer_volume *volume, int flush);
66325755 1124void hammer_put_buffer(struct hammer_buffer *buffer, int flush);
427e5fc6 1125
36f82b23
MD
1126hammer_off_t hammer_freemap_alloc(hammer_transaction_t trans,
1127 hammer_off_t owner, int *errorp);
1128void hammer_freemap_free(hammer_transaction_t trans, hammer_off_t phys_offset,
c3be93f2 1129 hammer_off_t owner, int *errorp);
0f65be10 1130int _hammer_checkspace(hammer_mount_t hmp, int slop, int64_t *resp);
36f82b23 1131hammer_off_t hammer_blockmap_alloc(hammer_transaction_t trans, int zone,
df2ccbac 1132 int bytes, hammer_off_t hint, int *errorp);
0832c9bb
MD
1133hammer_reserve_t hammer_blockmap_reserve(hammer_mount_t hmp, int zone,
1134 int bytes, hammer_off_t *zone_offp, int *errorp);
1135void hammer_blockmap_reserve_complete(hammer_mount_t hmp,
1136 hammer_reserve_t resv);
cb51be26 1137void hammer_reserve_clrdelay(hammer_mount_t hmp, hammer_reserve_t resv);
36f82b23
MD
1138void hammer_blockmap_free(hammer_transaction_t trans,
1139 hammer_off_t bmap_off, int bytes);
cdb6e4e6 1140int hammer_blockmap_finalize(hammer_transaction_t trans,
5e435c92 1141 hammer_reserve_t resv,
4a2796f3 1142 hammer_off_t bmap_off, int bytes);
bf686dbe
MD
1143int hammer_blockmap_getfree(hammer_mount_t hmp, hammer_off_t bmap_off,
1144 int *curp, int *errorp);
40043e7f
MD
1145hammer_off_t hammer_blockmap_lookup(hammer_mount_t hmp, hammer_off_t bmap_off,
1146 int *errorp);
bf686dbe
MD
1147hammer_off_t hammer_undo_lookup(hammer_mount_t hmp, hammer_off_t bmap_off,
1148 int *errorp);
06ad81ff
MD
1149int64_t hammer_undo_used(hammer_transaction_t trans);
1150int64_t hammer_undo_space(hammer_transaction_t trans);
1f07f686 1151int64_t hammer_undo_max(hammer_mount_t hmp);
710733a6 1152int hammer_undo_reclaim(hammer_io_t io);
1f07f686 1153
8cd0a023
MD
1154void hammer_start_transaction(struct hammer_transaction *trans,
1155 struct hammer_mount *hmp);
36f82b23
MD
1156void hammer_simple_transaction(struct hammer_transaction *trans,
1157 struct hammer_mount *hmp);
b84de5af
MD
1158void hammer_start_transaction_fls(struct hammer_transaction *trans,
1159 struct hammer_mount *hmp);
1160void hammer_done_transaction(struct hammer_transaction *trans);
83f2a3aa 1161hammer_tid_t hammer_alloc_tid(hammer_mount_t hmp, int count);
66325755 1162
47637bff 1163void hammer_modify_inode(hammer_inode_t ip, int flags);
f90dde4c 1164void hammer_flush_inode(hammer_inode_t ip, int flags);
cdb6e4e6 1165void hammer_flush_inode_done(hammer_inode_t ip, int error);
b84de5af
MD
1166void hammer_wait_inode(hammer_inode_t ip);
1167
8cd0a023
MD
1168int hammer_create_inode(struct hammer_transaction *trans, struct vattr *vap,
1169 struct ucred *cred, struct hammer_inode *dip,
5a64efa1 1170 const char *name, int namelen,
ea434b6f
MD
1171 hammer_pseudofs_inmem_t pfsm,
1172 struct hammer_inode **ipp);
a89aec1b 1173void hammer_rel_inode(hammer_inode_t ip, int flush);
51c35492 1174int hammer_reload_inode(hammer_inode_t ip, void *arg __unused);
af209b0f 1175int hammer_ino_rb_compare(hammer_inode_t ip1, hammer_inode_t ip2);
cdb6e4e6 1176int hammer_destroy_inode_callback(hammer_inode_t ip, void *data __unused);
51c35492 1177
02325004 1178int hammer_sync_inode(hammer_transaction_t trans, hammer_inode_t ip);
7b6ccb11 1179void hammer_test_inode(hammer_inode_t dip);
e8599db1 1180void hammer_inode_unloadable_check(hammer_inode_t ip, int getvp);
8cd0a023 1181
a89aec1b 1182int hammer_ip_add_directory(struct hammer_transaction *trans,
5a930e66 1183 hammer_inode_t dip, const char *name, int bytes,
8cd0a023 1184 hammer_inode_t nip);
a89aec1b 1185int hammer_ip_del_directory(struct hammer_transaction *trans,
8cd0a023
MD
1186 hammer_cursor_t cursor, hammer_inode_t dip,
1187 hammer_inode_t ip);
47637bff 1188hammer_record_t hammer_ip_add_bulk(hammer_inode_t ip, off_t file_offset,
0832c9bb 1189 void *data, int bytes, int *errorp);
47637bff 1190int hammer_ip_frontend_trunc(struct hammer_inode *ip, off_t file_size);
7a04d74f
MD
1191int hammer_ip_add_record(struct hammer_transaction *trans,
1192 hammer_record_t record);
4e17f465 1193int hammer_ip_delete_range(hammer_cursor_t cursor, hammer_inode_t ip,
47637bff 1194 int64_t ran_beg, int64_t ran_end, int truncating);
a9d52b76 1195int hammer_ip_delete_clean(hammer_cursor_t cursor, hammer_inode_t ip,
4e17f465
MD
1196 int *countp);
1197int hammer_ip_sync_data(hammer_cursor_t cursor, hammer_inode_t ip,
1198 int64_t offset, void *data, int bytes);
36f82b23 1199int hammer_ip_sync_record(hammer_transaction_t trans, hammer_record_t rec);
4e17f465 1200int hammer_ip_sync_record_cursor(hammer_cursor_t cursor, hammer_record_t rec);
ea434b6f
MD
1201hammer_pseudofs_inmem_t hammer_load_pseudofs(hammer_transaction_t trans,
1202 u_int32_t localization, int *errorp);
1203int hammer_mkroot_pseudofs(hammer_transaction_t trans, struct ucred *cred,
1204 hammer_pseudofs_inmem_t pfsm);
1205int hammer_save_pseudofs(hammer_transaction_t trans,
1206 hammer_pseudofs_inmem_t pfsm);
842e7a70 1207int hammer_unload_pseudofs(hammer_transaction_t trans, u_int32_t localization);
5fa5c92f 1208void hammer_rel_pseudofs(hammer_mount_t hmp, hammer_pseudofs_inmem_t pfsm);
7dc57964
MD
1209int hammer_ioctl(hammer_inode_t ip, u_long com, caddr_t data, int fflag,
1210 struct ucred *cred);
1211
748efb59 1212void hammer_io_init(hammer_io_t io, hammer_volume_t volume,
10a5d1ba 1213 enum hammer_io_type type);
2f85fa4d
MD
1214int hammer_io_read(struct vnode *devvp, struct hammer_io *io,
1215 hammer_off_t limit);
0e8bd897 1216void hammer_io_advance(struct hammer_io *io);
66325755 1217int hammer_io_new(struct vnode *devvp, struct hammer_io *io);
362ec2dc 1218int hammer_io_inval(hammer_volume_t volume, hammer_off_t zone2_offset);
ecca949a 1219struct buf *hammer_io_release(struct hammer_io *io, int flush);
710733a6 1220void hammer_io_flush(struct hammer_io *io, int reclaim);
1b0ab2c3 1221void hammer_io_wait(struct hammer_io *io);
055f5ff8 1222void hammer_io_waitdep(struct hammer_io *io);
af209b0f 1223void hammer_io_wait_all(hammer_mount_t hmp, const char *ident);
1b0ab2c3
MD
1224int hammer_io_direct_read(hammer_mount_t hmp, struct bio *bio,
1225 hammer_btree_leaf_elm_t leaf);
1226int hammer_io_direct_write(hammer_mount_t hmp, hammer_record_t record,
1227 struct bio *bio);
1228void hammer_io_direct_wait(hammer_record_t record);
43c665ae 1229void hammer_io_direct_uncache(hammer_mount_t hmp, hammer_btree_leaf_elm_t leaf);
9f5097dc
MD
1230void hammer_io_write_interlock(hammer_io_t io);
1231void hammer_io_done_interlock(hammer_io_t io);
4a2796f3 1232void hammer_io_clear_modify(struct hammer_io *io, int inval);
cebe9493 1233void hammer_io_clear_modlist(struct hammer_io *io);
748efb59 1234void hammer_io_flush_sync(hammer_mount_t hmp);
2faf0737 1235void hammer_io_clear_error(struct hammer_io *io);
748efb59 1236
36f82b23
MD
1237void hammer_modify_volume(hammer_transaction_t trans, hammer_volume_t volume,
1238 void *base, int len);
1239void hammer_modify_buffer(hammer_transaction_t trans, hammer_buffer_t buffer,
1240 void *base, int len);
10a5d1ba
MD
1241void hammer_modify_volume_done(hammer_volume_t volume);
1242void hammer_modify_buffer_done(hammer_buffer_t buffer);
0b075555 1243
36f82b23
MD
1244int hammer_ioc_reblock(hammer_transaction_t trans, hammer_inode_t ip,
1245 struct hammer_ioc_reblock *reblock);
1775b6a0
MD
1246int hammer_ioc_rebalance(hammer_transaction_t trans, hammer_inode_t ip,
1247 struct hammer_ioc_rebalance *rebal);
11ad5ade
MD
1248int hammer_ioc_prune(hammer_transaction_t trans, hammer_inode_t ip,
1249 struct hammer_ioc_prune *prune);
c82af904
MD
1250int hammer_ioc_mirror_read(hammer_transaction_t trans, hammer_inode_t ip,
1251 struct hammer_ioc_mirror_rw *mirror);
1252int hammer_ioc_mirror_write(hammer_transaction_t trans, hammer_inode_t ip,
1253 struct hammer_ioc_mirror_rw *mirror);
5fa5c92f 1254int hammer_ioc_set_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
ea434b6f 1255 struct ucred *cred, struct hammer_ioc_pseudofs_rw *pfs);
5fa5c92f
MD
1256int hammer_ioc_get_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1257 struct hammer_ioc_pseudofs_rw *pfs);
842e7a70
MD
1258int hammer_ioc_destroy_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1259 struct hammer_ioc_pseudofs_rw *pfs);
1260int hammer_ioc_downgrade_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1261 struct hammer_ioc_pseudofs_rw *pfs);
1262int hammer_ioc_upgrade_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1263 struct hammer_ioc_pseudofs_rw *pfs);
4889cbd4
MD
1264int hammer_ioc_wait_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1265 struct hammer_ioc_pseudofs_rw *pfs);
d121f61c 1266int hammer_ioc_volume_add(hammer_transaction_t trans, hammer_inode_t ip,
865c9609
MN
1267 struct hammer_ioc_volume *ioc);
1268int hammer_ioc_volume_del(hammer_transaction_t trans, hammer_inode_t ip,
1269 struct hammer_ioc_volume *ioc);
bf686dbe 1270
855942b6 1271int hammer_signal_check(hammer_mount_t hmp);
bf686dbe 1272
059819e3
MD
1273void hammer_flusher_create(hammer_mount_t hmp);
1274void hammer_flusher_destroy(hammer_mount_t hmp);
1275void hammer_flusher_sync(hammer_mount_t hmp);
7a61b85d 1276int hammer_flusher_async(hammer_mount_t hmp, hammer_flush_group_t flg);
15e75dab 1277int hammer_flusher_async_one(hammer_mount_t hmp);
93291532 1278void hammer_flusher_wait(hammer_mount_t hmp, int seq);
82010f9f 1279void hammer_flusher_wait_next(hammer_mount_t hmp);
06ad81ff 1280int hammer_flusher_meta_limit(hammer_mount_t hmp);
93291532 1281int hammer_flusher_meta_halflimit(hammer_mount_t hmp);
06ad81ff 1282int hammer_flusher_undo_exhausted(hammer_transaction_t trans, int quarter);
525aad3a 1283void hammer_flusher_clean_loose_ios(hammer_mount_t hmp);
6c1f89f4 1284void hammer_flusher_finalize(hammer_transaction_t trans, int final);
1b0ab2c3 1285int hammer_flusher_haswork(hammer_mount_t hmp);
6048b411 1286void hammer_flusher_flush_undos(hammer_mount_t hmp, int already_flushed);
059819e3 1287
02428fb6
MD
1288int hammer_recover_stage1(hammer_mount_t hmp, hammer_volume_t rootvol);
1289int hammer_recover_stage2(hammer_mount_t hmp, hammer_volume_t rootvol);
51c35492 1290void hammer_recover_flush_buffers(hammer_mount_t hmp,
06ad81ff 1291 hammer_volume_t root_volume, int final);
f90dde4c 1292
19619882
MD
1293void hammer_crc_set_blockmap(hammer_blockmap_t blockmap);
1294void hammer_crc_set_volume(hammer_volume_ondisk_t ondisk);
ddfdf542 1295void hammer_crc_set_leaf(void *data, hammer_btree_leaf_elm_t leaf);
19619882
MD
1296
1297int hammer_crc_test_blockmap(hammer_blockmap_t blockmap);
1298int hammer_crc_test_volume(hammer_volume_ondisk_t ondisk);
19619882 1299int hammer_crc_test_btree(hammer_node_ondisk_t ondisk);
ddfdf542 1300int hammer_crc_test_leaf(void *data, hammer_btree_leaf_elm_t leaf);
77062c8a 1301void hkprintf(const char *ctl, ...);
a56cb012
MD
1302udev_t hammer_fsid_to_udev(uuid_t *uuid);
1303
19619882 1304
4a2796f3
MD
1305int hammer_blocksize(int64_t file_offset);
1306int64_t hammer_blockdemarc(int64_t file_offset1, int64_t file_offset2);
1307
0f65be10
MD
1308/*
1309 * Shortcut for _hammer_checkspace(), used all over the code.
1310 */
1311static __inline int
1312hammer_checkspace(hammer_mount_t hmp, int slop)
1313{
1314 return(_hammer_checkspace(hmp, slop, NULL));
1315}
1316
055f5ff8 1317#endif
427e5fc6 1318
8cd0a023 1319static __inline void
af209b0f
MD
1320hammer_wait_mem_record(hammer_record_t record)
1321{
1322 hammer_wait_mem_record_ident(record, "hmmwai");
1323}
1324
1325static __inline void
1326hammer_lock_ex(struct hammer_lock *lock)
1327{
1328 hammer_lock_ex_ident(lock, "hmrlck");
1329}
1330
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1331/*
1332 * Indicate that a B-Tree node is being modified.
1333 */
af209b0f 1334static __inline void
36f82b23 1335hammer_modify_node_noundo(hammer_transaction_t trans, hammer_node_t node)
bf686dbe 1336{
4c286c36 1337 KKASSERT((node->flags & HAMMER_NODE_CRCBAD) == 0);
36f82b23 1338 hammer_modify_buffer(trans, node->buffer, NULL, 0);
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1339}
1340
1341static __inline void
36f82b23 1342hammer_modify_node_all(hammer_transaction_t trans, struct hammer_node *node)
8cd0a023 1343{
4c286c36 1344 KKASSERT((node->flags & HAMMER_NODE_CRCBAD) == 0);
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1345 hammer_modify_buffer(trans, node->buffer,
1346 node->ondisk, sizeof(*node->ondisk));
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1347}
1348
bf686dbe 1349static __inline void
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1350hammer_modify_node(hammer_transaction_t trans, hammer_node_t node,
1351 void *base, int len)
bf686dbe 1352{
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1353 hammer_crc_t *crcptr;
1354
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1355 KKASSERT((char *)base >= (char *)node->ondisk &&
1356 (char *)base + len <=
1357 (char *)node->ondisk + sizeof(*node->ondisk));
4c286c36 1358 KKASSERT((node->flags & HAMMER_NODE_CRCBAD) == 0);
36f82b23 1359 hammer_modify_buffer(trans, node->buffer, base, len);
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1360 crcptr = &node->ondisk->crc;
1361 hammer_modify_buffer(trans, node->buffer, crcptr, sizeof(hammer_crc_t));
1362 --node->buffer->io.modify_refs; /* only want one ref */
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1363}
1364
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1365/*
1366 * Indicate that the specified modifications have been completed.
1367 *
1368 * Do not try to generate the crc here, it's very expensive to do and a
1369 * sequence of insertions or deletions can result in many calls to this
1370 * function on the same node.
1371 */
bf686dbe 1372static __inline void
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1373hammer_modify_node_done(hammer_node_t node)
1374{
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1375 node->flags |= HAMMER_NODE_CRCGOOD;
1376 if ((node->flags & HAMMER_NODE_NEEDSCRC) == 0) {
1377 node->flags |= HAMMER_NODE_NEEDSCRC;
1378 node->buffer->io.gencrc = 1;
1379 hammer_ref_node(node);
1380 }
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1381 hammer_modify_buffer_done(node->buffer);
1382}
1383
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1384#define hammer_modify_volume_field(trans, vol, field) \
1385 hammer_modify_volume(trans, vol, &(vol)->ondisk->field, \
1386 sizeof((vol)->ondisk->field))
1387
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1388#define hammer_modify_node_field(trans, node, field) \
1389 hammer_modify_node(trans, node, &(node)->ondisk->field, \
1390 sizeof((node)->ondisk->field))
1391
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1392/*
1393 * The HAMMER_INODE_CAP_DIR_LOCAL_INO capability is set on newly
1394 * created directories for HAMMER version 2 or greater and causes
1395 * directory entries to be placed the inode localization zone in
1396 * the B-Tree instead of the misc zone.
1397 *
1398 * This greatly improves localization between directory entries and
1399 * inodes
1400 */
1401static __inline u_int32_t
1402hammer_dir_localization(hammer_inode_t dip)
1403{
1404 if (dip->ino_data.cap_flags & HAMMER_INODE_CAP_DIR_LOCAL_INO)
1405 return(HAMMER_LOCALIZE_INODE);
1406 else
1407 return(HAMMER_LOCALIZE_MISC);
1408}