HAMMER - Implement experimental volume removal
[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
147static __inline int
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148hammer_isactive(struct hammer_lock *lock)
149{
150 return(lock->refs != 0);
151}
152
153static __inline int
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154hammer_islastref(struct hammer_lock *lock)
155{
156 return(lock->refs == 1);
157}
c60bb2c5 158
8750964d 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
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);
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182
183/*
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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
5fa5c92f 206/*
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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
229/*
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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
240/*
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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 */
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246struct hammer_fls_rb_tree;
247RB_HEAD(hammer_fls_rb_tree, hammer_inode);
248RB_PROTOTYPE(hammer_fls_rb_tree, hammer_inode, rb_flsnode,
249 hammer_ino_rb_compare);
250
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251struct hammer_flush_group {
252 TAILQ_ENTRY(hammer_flush_group) flush_entry;
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253 struct hammer_fls_rb_tree flush_tree;
254 int unused01;
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255 int total_count; /* record load */
256 int running; /* group is running */
257 int closed;
258 int refs;
259};
260
261typedef struct hammer_flush_group *hammer_flush_group_t;
262
263TAILQ_HEAD(hammer_flush_group_list, hammer_flush_group);
264
265/*
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266 * Structure used to represent an inode in-memory.
267 *
268 * The record and data associated with an inode may be out of sync with
269 * the disk (xDIRTY flags), or not even on the disk at all (ONDISK flag
270 * clear).
271 *
272 * An inode may also hold a cache of unsynchronized records, used for
273 * database and directories only. Unsynchronized regular file data is
274 * stored in the buffer cache.
275 *
276 * NOTE: A file which is created and destroyed within the initial
277 * synchronization period can wind up not doing any disk I/O at all.
278 *
279 * Finally, an inode may cache numerous disk-referencing B-Tree cursors.
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280 */
281struct hammer_ino_rb_tree;
282struct hammer_inode;
283RB_HEAD(hammer_ino_rb_tree, hammer_inode);
284RB_PROTOTYPEX(hammer_ino_rb_tree, INFO, hammer_inode, rb_node,
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285 hammer_ino_rb_compare, hammer_inode_info_t);
286
287struct hammer_rec_rb_tree;
288struct hammer_record;
289RB_HEAD(hammer_rec_rb_tree, hammer_record);
290RB_PROTOTYPEX(hammer_rec_rb_tree, INFO, hammer_record, rb_node,
0832c9bb 291 hammer_rec_rb_compare, hammer_btree_leaf_elm_t);
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292
293TAILQ_HEAD(hammer_node_list, hammer_node);
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294
295struct hammer_inode {
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296 RB_ENTRY(hammer_inode) rb_node;
297 hammer_inode_state_t flush_state;
7a61b85d 298 hammer_flush_group_t flush_group;
ff003b11 299 RB_ENTRY(hammer_inode) rb_flsnode; /* when on flush list */
1f07f686 300 struct hammer_record_list target_list; /* target of dependant recs */
adf01747 301 int64_t obj_id; /* (key) object identifier */
b84de5af 302 hammer_tid_t obj_asof; /* (key) snapshot or 0 */
ddfdf542 303 u_int32_t obj_localization; /* (key) pseudo-fs */
b84de5af 304 struct hammer_mount *hmp;
0729c8c8 305 hammer_objid_cache_t objid_cache;
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306 int flags;
307 int error; /* flush error */
308 int cursor_ip_refs; /* sanity */
47637bff 309 int rsv_recs;
b84de5af 310 struct vnode *vp;
5fa5c92f 311 hammer_pseudofs_inmem_t pfsm;
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312 struct lockf advlock;
313 struct hammer_lock lock; /* sync copy interlock */
b84de5af 314 off_t trunc_off;
11ad5ade 315 struct hammer_btree_leaf_elm ino_leaf; /* in-memory cache */
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316 struct hammer_inode_data ino_data; /* in-memory cache */
317 struct hammer_rec_rb_tree rec_tree; /* in-memory cache */
3214ade6 318 int rec_generation;
39d8fd63 319 struct hammer_node_cache cache[4]; /* search initiate cache */
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320
321 /*
322 * When a demark is created to synchronize an inode to
323 * disk, certain fields are copied so the front-end VOPs
324 * can continue to run in parallel with the synchronization
325 * occuring in the background.
326 */
327 int sync_flags; /* to-sync flags cache */
328 off_t sync_trunc_off; /* to-sync truncation */
a9d52b76 329 off_t save_trunc_off; /* write optimization */
11ad5ade 330 struct hammer_btree_leaf_elm sync_ino_leaf; /* to-sync cache */
b84de5af 331 struct hammer_inode_data sync_ino_data; /* to-sync cache */
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332};
333
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334typedef struct hammer_inode *hammer_inode_t;
335
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336#define VTOI(vp) ((struct hammer_inode *)(vp)->v_data)
337
8cd0a023 338#define HAMMER_INODE_DDIRTY 0x0001 /* in-memory ino_data is dirty */
ddfdf542 339 /* (not including atime/mtime) */
e63644f0 340#define HAMMER_INODE_RSV_INODES 0x0002 /* hmp->rsv_inodes bumped */
7b6ccb11 341#define HAMMER_INODE_CONN_DOWN 0x0004 /* include in downward recursion */
1f07f686 342#define HAMMER_INODE_XDIRTY 0x0008 /* in-memory records */
8cd0a023 343#define HAMMER_INODE_ONDISK 0x0010 /* inode is on-disk (else not yet) */
a89aec1b 344#define HAMMER_INODE_FLUSH 0x0020 /* flush on last ref */
869e8f55 345#define HAMMER_INODE_DELETED 0x0080 /* inode delete (backend) */
76376933 346#define HAMMER_INODE_DELONDISK 0x0100 /* delete synchronized to disk */
d113fda1 347#define HAMMER_INODE_RO 0x0200 /* read-only (because of as-of) */
e8599db1 348#define HAMMER_INODE_VHELD 0x0400 /* vnode held on sync */
0a72edae 349#define HAMMER_INODE_DONDISK 0x0800 /* data records may be on disk */
f3b0f382 350#define HAMMER_INODE_BUFS 0x1000 /* dirty high level bps present */
f153644d 351#define HAMMER_INODE_REFLUSH 0x2000 /* flush on dependancy / reflush */
9f5097dc 352#define HAMMER_INODE_RECLAIM 0x4000 /* trying to reclaim */
059819e3 353#define HAMMER_INODE_FLUSHW 0x8000 /* Someone waiting for flush */
8cd0a023 354
b84de5af 355#define HAMMER_INODE_TRUNCATED 0x00010000
869e8f55 356#define HAMMER_INODE_DELETING 0x00020000 /* inode delete request (frontend)*/
4e17f465 357#define HAMMER_INODE_RESIGNAL 0x00040000 /* re-signal on re-flush */
ddfdf542 358#define HAMMER_INODE_ATIME 0x00100000 /* in-memory atime modified */
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359#define HAMMER_INODE_MTIME 0x00200000 /* in-memory mtime modified */
360#define HAMMER_INODE_WOULDBLOCK 0x00400000 /* re-issue to new flush group */
4c286c36 361#define HAMMER_INODE_DUMMY 0x00800000 /* dummy inode covering bad file */
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362#define HAMMER_INODE_CLOSESYNC 0x01000000 /* synchronously fsync on close */
363#define HAMMER_INODE_CLOSEASYNC 0x02000000 /* asynchronously fsync on close */
b84de5af 364
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365#define HAMMER_INODE_MODMASK (HAMMER_INODE_DDIRTY| \
366 HAMMER_INODE_XDIRTY|HAMMER_INODE_BUFS| \
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367 HAMMER_INODE_ATIME|HAMMER_INODE_MTIME| \
368 HAMMER_INODE_TRUNCATED|HAMMER_INODE_DELETING)
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369
370#define HAMMER_INODE_MODMASK_NOXDIRTY \
371 (HAMMER_INODE_MODMASK & ~HAMMER_INODE_XDIRTY)
0b075555 372
f90dde4c 373#define HAMMER_FLUSH_SIGNAL 0x0001
4e17f465 374#define HAMMER_FLUSH_RECURSION 0x0002
f90dde4c 375
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376/*
377 * Used by the inode reclaim code to pipeline reclaims and avoid
378 * blowing out kernel memory or letting the flusher get too far
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379 * behind. The reclaim wakes up when count reaches 0 or the
380 * timer expires.
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381 */
382struct hammer_reclaim {
383 TAILQ_ENTRY(hammer_reclaim) entry;
82010f9f 384 int count;
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385};
386
ff003b11 387#define HAMMER_RECLAIM_WAIT 4000 /* default vfs.hammer.limit_reclaim */
9f5097dc 388
8750964d 389/*
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390 * Structure used to represent an unsynchronized record in-memory. These
391 * records typically represent directory entries. Only non-historical
392 * records are kept in-memory.
393 *
394 * Records are organized as a per-inode RB-Tree. If the inode is not
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395 * on disk then neither are any records and the in-memory record tree
396 * represents the entire contents of the inode. If the inode is on disk
397 * then the on-disk B-Tree is scanned in parallel with the in-memory
398 * RB-Tree to synthesize the current state of the file.
399 *
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400 * Records are also used to enforce the ordering of directory create/delete
401 * operations. A new inode will not be flushed to disk unless its related
402 * directory entry is also being flushed at the same time. A directory entry
403 * will not be removed unless its related inode is also being removed at the
404 * same time.
8750964d 405 */
1f07f686 406typedef enum hammer_record_type {
e8599db1 407 HAMMER_MEM_RECORD_GENERAL, /* misc record */
930bf163 408 HAMMER_MEM_RECORD_INODE, /* inode record */
1f07f686 409 HAMMER_MEM_RECORD_ADD, /* positive memory cache record */
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410 HAMMER_MEM_RECORD_DEL, /* negative delete-on-disk record */
411 HAMMER_MEM_RECORD_DATA /* bulk-data record w/on-disk ref */
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412} hammer_record_type_t;
413
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414struct hammer_record {
415 RB_ENTRY(hammer_record) rb_node;
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416 TAILQ_ENTRY(hammer_record) target_entry;
417 hammer_inode_state_t flush_state;
7a61b85d 418 hammer_flush_group_t flush_group;
1f07f686 419 hammer_record_type_t type;
a89aec1b 420 struct hammer_lock lock;
0832c9bb 421 struct hammer_reserve *resv;
8cd0a023 422 struct hammer_inode *ip;
1f07f686 423 struct hammer_inode *target_ip;
11ad5ade 424 struct hammer_btree_leaf_elm leaf;
8cd0a023 425 union hammer_data_ondisk *data;
8cd0a023 426 int flags;
e469566b 427 hammer_off_t zone2_offset; /* direct-write only */
8cd0a023 428};
8750964d 429
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430typedef struct hammer_record *hammer_record_t;
431
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432/*
433 * Record flags. Note that FE can only be set by the frontend if the
434 * record has not been interlocked by the backend w/ BE.
435 */
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436#define HAMMER_RECF_ALLOCDATA 0x0001
437#define HAMMER_RECF_ONRBTREE 0x0002
b84de5af 438#define HAMMER_RECF_DELETED_FE 0x0004 /* deleted (frontend) */
d36ec43b 439#define HAMMER_RECF_DELETED_BE 0x0008 /* deleted (backend) */
1b0ab2c3 440#define HAMMER_RECF_COMMITTED 0x0010 /* committed to the B-Tree */
d36ec43b 441#define HAMMER_RECF_INTERLOCK_BE 0x0020 /* backend interlock */
0832c9bb 442#define HAMMER_RECF_WANTED 0x0040 /* wanted by the frontend */
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443#define HAMMER_RECF_CONVERT_DELETE 0x0100 /* special case */
444#define HAMMER_RECF_DIRECT_IO 0x0200 /* related direct I/O running*/
445#define HAMMER_RECF_DIRECT_WAIT 0x0400 /* related direct I/O running*/
e469566b 446#define HAMMER_RECF_DIRECT_INVAL 0x0800 /* buffer alias invalidation */
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447
448/*
83f2a3aa 449 * hammer_create_at_cursor() and hammer_delete_at_cursor() flags.
602c6cb8 450 */
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451#define HAMMER_CREATE_MODE_UMIRROR 0x0001
452#define HAMMER_CREATE_MODE_SYS 0x0002
453
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454#define HAMMER_DELETE_ADJUST 0x0001
455#define HAMMER_DELETE_DESTROY 0x0002
456
457/*
47197d71 458 * In-memory structures representing on-disk structures.
8cd0a023 459 */
8750964d 460struct hammer_volume;
427e5fc6 461struct hammer_buffer;
8cd0a023 462struct hammer_node;
e8599db1 463struct hammer_undo;
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464struct hammer_reserve;
465
8750964d 466RB_HEAD(hammer_vol_rb_tree, hammer_volume);
427e5fc6 467RB_HEAD(hammer_buf_rb_tree, hammer_buffer);
8cd0a023 468RB_HEAD(hammer_nod_rb_tree, hammer_node);
e8599db1 469RB_HEAD(hammer_und_rb_tree, hammer_undo);
0832c9bb 470RB_HEAD(hammer_res_rb_tree, hammer_reserve);
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471
472RB_PROTOTYPE2(hammer_vol_rb_tree, hammer_volume, rb_node,
473 hammer_vol_rb_compare, int32_t);
427e5fc6 474RB_PROTOTYPE2(hammer_buf_rb_tree, hammer_buffer, rb_node,
47197d71 475 hammer_buf_rb_compare, hammer_off_t);
8cd0a023 476RB_PROTOTYPE2(hammer_nod_rb_tree, hammer_node, rb_node,
47197d71 477 hammer_nod_rb_compare, hammer_off_t);
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478RB_PROTOTYPE2(hammer_und_rb_tree, hammer_undo, rb_node,
479 hammer_und_rb_compare, hammer_off_t);
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480RB_PROTOTYPE2(hammer_res_rb_tree, hammer_reserve, rb_node,
481 hammer_res_rb_compare, hammer_off_t);
8750964d 482
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483/*
484 * IO management - embedded at the head of various in-memory structures
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485 *
486 * VOLUME - hammer_volume containing meta-data
487 * META_BUFFER - hammer_buffer containing meta-data
488 * DATA_BUFFER - hammer_buffer containing pure-data
489 *
490 * Dirty volume headers and dirty meta-data buffers are locked until the
491 * flusher can sequence them out. Dirty pure-data buffers can be written.
492 * Clean buffers can be passively released.
66325755 493 */
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494typedef enum hammer_io_type {
495 HAMMER_STRUCTURE_VOLUME,
496 HAMMER_STRUCTURE_META_BUFFER,
497 HAMMER_STRUCTURE_UNDO_BUFFER,
498 HAMMER_STRUCTURE_DATA_BUFFER
499} hammer_io_type_t;
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500
501union hammer_io_structure;
055f5ff8 502struct hammer_io;
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503
504struct worklist {
505 LIST_ENTRY(worklist) node;
506};
507
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508TAILQ_HEAD(hammer_io_list, hammer_io);
509typedef struct hammer_io_list *hammer_io_list_t;
055f5ff8 510
66325755 511struct hammer_io {
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512 struct worklist worklist;
513 struct hammer_lock lock;
514 enum hammer_io_type type;
515 struct hammer_mount *hmp;
748efb59 516 struct hammer_volume *volume;
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517 TAILQ_ENTRY(hammer_io) mod_entry; /* list entry if modified */
518 hammer_io_list_t mod_list;
519 struct buf *bp;
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520 int64_t offset; /* zone-2 offset */
521 int bytes; /* buffer cache buffer size */
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522 int loading; /* loading/unloading interlock */
523 int modify_refs;
524
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525 u_int modified : 1; /* bp's data was modified */
526 u_int released : 1; /* bp released (w/ B_LOCKED set) */
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527 u_int running : 1; /* bp write IO in progress */
528 u_int waiting : 1; /* someone is waiting on us */
b33e2cc0 529 u_int validated : 1; /* ondisk has been validated */
b58c6388 530 u_int waitdep : 1; /* flush waits for dependancies */
51c35492 531 u_int recovered : 1; /* has recovery ref */
9f5097dc 532 u_int waitmod : 1; /* waiting for modify_refs */
cebe9493 533 u_int reclaim : 1; /* reclaim requested */
bcac4bbb 534 u_int gencrc : 1; /* crc needs to be generated */
cdb6e4e6 535 u_int ioerror : 1; /* abort on io-error */
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536};
537
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538typedef struct hammer_io *hammer_io_t;
539
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540#define HAMMER_CLUSTER_SIZE (64 * 1024)
541#if HAMMER_CLUSTER_SIZE > MAXBSIZE
542#undef HAMMER_CLUSTER_SIZE
543#define HAMMER_CLUSTER_SIZE MAXBSIZE
544#endif
545#define HAMMER_CLUSTER_BUFS (HAMMER_CLUSTER_SIZE / HAMMER_BUFSIZE)
546
66325755 547/*
8cd0a023 548 * In-memory volume representing on-disk buffer
66325755 549 */
8750964d 550struct hammer_volume {
66325755 551 struct hammer_io io;
8750964d 552 RB_ENTRY(hammer_volume) rb_node;
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553 struct hammer_volume_ondisk *ondisk;
554 int32_t vol_no;
fbc6e32a 555 int64_t nblocks; /* note: special calculation for statfs */
47197d71 556 int64_t buffer_base; /* base offset of buffer 0 */
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557 hammer_off_t maxbuf_off; /* Maximum buffer offset (zone-2) */
558 hammer_off_t maxraw_off; /* Maximum raw offset for device */
c60bb2c5 559 char *vol_name;
8750964d 560 struct vnode *devvp;
427e5fc6 561 int vol_flags;
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562};
563
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564typedef struct hammer_volume *hammer_volume_t;
565
66325755 566/*
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567 * In-memory buffer (other then volume, super-cluster, or cluster),
568 * representing an on-disk buffer.
66325755 569 */
427e5fc6 570struct hammer_buffer {
66325755 571 struct hammer_io io;
427e5fc6 572 RB_ENTRY(hammer_buffer) rb_node;
47197d71 573 void *ondisk;
34d829f7 574 hammer_off_t zoneX_offset;
0832c9bb 575 hammer_off_t zone2_offset;
cebe9493 576 struct hammer_reserve *resv;
8cd0a023 577 struct hammer_node_list clist;
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578};
579
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580typedef struct hammer_buffer *hammer_buffer_t;
581
582/*
583 * In-memory B-Tree node, representing an on-disk B-Tree node.
584 *
585 * This is a hang-on structure which is backed by a hammer_buffer,
586 * indexed by a hammer_cluster, and used for fine-grained locking of
587 * B-Tree nodes in order to properly control lock ordering. A hammer_buffer
588 * can contain multiple nodes representing wildly disassociated portions
589 * of the B-Tree so locking cannot be done on a buffer-by-buffer basis.
590 *
591 * This structure uses a cluster-relative index to reduce the number
592 * of layers required to access it, and also because all on-disk B-Tree
593 * references are cluster-relative offsets.
594 */
595struct hammer_node {
596 struct hammer_lock lock; /* node-by-node lock */
597 TAILQ_ENTRY(hammer_node) entry; /* per-buffer linkage */
598 RB_ENTRY(hammer_node) rb_node; /* per-cluster linkage */
47197d71 599 hammer_off_t node_offset; /* full offset spec */
40043e7f 600 struct hammer_mount *hmp;
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601 struct hammer_buffer *buffer; /* backing buffer */
602 hammer_node_ondisk_t ondisk; /* ptr to on-disk structure */
b3bad96f 603 TAILQ_HEAD(, hammer_cursor) cursor_list; /* deadlock recovery */
bcac4bbb 604 struct hammer_node_cache_list cache_list; /* passive caches */
b3deaf57 605 int flags;
740d8317 606 int loading; /* load interlock */
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607};
608
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609#define HAMMER_NODE_DELETED 0x0001
610#define HAMMER_NODE_FLUSH 0x0002
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611#define HAMMER_NODE_CRCGOOD 0x0004
612#define HAMMER_NODE_NEEDSCRC 0x0008
c82af904 613#define HAMMER_NODE_NEEDSMIRROR 0x0010
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614#define HAMMER_NODE_CRCBAD 0x0020
615
616#define HAMMER_NODE_CRCANY (HAMMER_NODE_CRCGOOD | HAMMER_NODE_CRCBAD)
b3deaf57 617
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618typedef struct hammer_node *hammer_node_t;
619
620/*
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621 * List of locked nodes. This structure is used to lock potentially large
622 * numbers of nodes as an aid for complex B-Tree operations.
b33e2cc0 623 */
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624struct hammer_node_lock;
625TAILQ_HEAD(hammer_node_lock_list, hammer_node_lock);
626
627struct hammer_node_lock {
628 TAILQ_ENTRY(hammer_node_lock) entry;
629 struct hammer_node_lock_list list;
630 struct hammer_node_lock *parent;
b33e2cc0 631 hammer_node_t node;
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632 hammer_node_ondisk_t copy; /* copy of on-disk data */
633 int index; /* index of this node in parent */
634 int count; /* count children */
635 int flags;
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636};
637
1775b6a0 638typedef struct hammer_node_lock *hammer_node_lock_t;
b33e2cc0 639
1775b6a0 640#define HAMMER_NODE_LOCK_UPDATED 0x0001
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641
642/*
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643 * Common I/O management structure - embedded in in-memory structures
644 * which are backed by filesystem buffers.
645 */
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646union hammer_io_structure {
647 struct hammer_io io;
648 struct hammer_volume volume;
66325755 649 struct hammer_buffer buffer;
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650};
651
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652typedef union hammer_io_structure *hammer_io_structure_t;
653
bf686dbe 654/*
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655 * The reserve structure prevents the blockmap from allocating
656 * out of a reserved bigblock. Such reservations are used by
657 * the direct-write mechanism.
658 *
659 * The structure is also used to hold off on reallocations of
660 * big blocks from the freemap until flush dependancies have
661 * been dealt with.
662 */
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663struct hammer_reserve {
664 RB_ENTRY(hammer_reserve) rb_node;
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665 TAILQ_ENTRY(hammer_reserve) delay_entry;
666 int flush_group;
cb51be26 667 int flags;
0832c9bb 668 int refs;
cb51be26 669 int zone;
df301614 670 int append_off;
cebe9493 671 hammer_off_t zone_offset;
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672};
673
674typedef struct hammer_reserve *hammer_reserve_t;
675
cb51be26 676#define HAMMER_RESF_ONDELAY 0x0001
5e435c92 677#define HAMMER_RESF_LAYER2FREE 0x0002
cb51be26 678
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679#include "hammer_cursor.h"
680
8750964d 681/*
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682 * The undo structure tracks recent undos to avoid laying down duplicate
683 * undos within a flush group, saving us a significant amount of overhead.
684 *
685 * This is strictly a heuristic.
e8599db1 686 */
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687#define HAMMER_MAX_UNDOS 1024
688#define HAMMER_MAX_FLUSHERS 4
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689
690struct hammer_undo {
691 RB_ENTRY(hammer_undo) rb_node;
692 TAILQ_ENTRY(hammer_undo) lru_entry;
693 hammer_off_t offset;
694 int bytes;
695};
696
697typedef struct hammer_undo *hammer_undo_t;
698
af209b0f 699struct hammer_flusher_info;
7a61b85d 700TAILQ_HEAD(hammer_flusher_info_list, hammer_flusher_info);
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701
702struct hammer_flusher {
703 int signal; /* flusher thread sequencer */
704 int act; /* currently active flush group */
705 int done; /* set to act when complete */
706 int next; /* next flush group */
707 int group_lock; /* lock sequencing of the next flush */
708 int exiting; /* request master exit */
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709 thread_t td; /* master flusher thread */
710 hammer_tid_t tid; /* last flushed transaction id */
711 int finalize_want; /* serialize finalization */
712 struct hammer_lock finalize_lock; /* serialize finalization */
713 struct hammer_transaction trans; /* shared transaction */
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714 struct hammer_flusher_info_list run_list;
715 struct hammer_flusher_info_list ready_list;
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716};
717
718/*
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719 * Internal hammer mount data structure
720 */
721struct hammer_mount {
722 struct mount *mp;
27ea2398 723 /*struct vnode *rootvp;*/
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724 struct hammer_ino_rb_tree rb_inos_root;
725 struct hammer_vol_rb_tree rb_vols_root;
40043e7f 726 struct hammer_nod_rb_tree rb_nods_root;
e8599db1 727 struct hammer_und_rb_tree rb_undo_root;
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728 struct hammer_res_rb_tree rb_resv_root;
729 struct hammer_buf_rb_tree rb_bufs_root;
5fa5c92f 730 struct hammer_pfs_rb_tree rb_pfsm_root;
8750964d 731 struct hammer_volume *rootvol;
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732 struct hammer_base_elm root_btree_beg;
733 struct hammer_base_elm root_btree_end;
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734
735 struct malloc_type *m_misc;
736 struct malloc_type *m_inodes;
737
cdb6e4e6 738 int flags; /* HAMMER_MOUNT_xxx flags */
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739 int hflags;
740 int ronly;
741 int nvolumes;
d26d0ae9 742 int volume_iterator;
732a1697 743 int master_id; /* -1 or 0-15 - clustering and mirroring */
44a83111 744 int version; /* hammer filesystem version to use */
e63644f0 745 int rsv_inodes; /* reserved space due to dirty inodes */
a7e9bef1 746 int64_t rsv_databytes; /* reserved space due to record data */
e63644f0 747 int rsv_recs; /* reserved space due to dirty records */
a7e9bef1 748 int rsv_fromdelay; /* bigblocks reserved due to flush delay */
7a61b85d 749 int undo_rec_limit; /* based on size of undo area */
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750 int last_newrecords;
751 int count_newrecords;
da2da375 752
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753 int volume_to_remove; /* volume that is currently being removed */
754
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755 int inode_reclaims; /* inodes pending reclaim by flusher */
756 int count_inodes; /* total number of inodes */
af209b0f 757 int count_iqueued; /* inodes queued to flusher */
da2da375
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758
759 struct hammer_flusher flusher;
760
855942b6 761 u_int check_interrupt;
3e583440 762 u_int check_yield;
8750964d 763 uuid_t fsid;
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764 struct hammer_io_list volu_list; /* dirty undo buffers */
765 struct hammer_io_list undo_list; /* dirty undo buffers */
766 struct hammer_io_list data_list; /* dirty data buffers */
0832c9bb 767 struct hammer_io_list alt_data_list; /* dirty data buffers */
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768 struct hammer_io_list meta_list; /* dirty meta bufs */
769 struct hammer_io_list lose_list; /* loose buffers */
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770 int locked_dirty_space; /* meta/volu count */
771 int io_running_space;
0729c8c8 772 int objid_cache_count;
cdb6e4e6
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773 int error; /* critical I/O error */
774 struct krate krate; /* rate limited kprintf */
ddfdf542 775 hammer_tid_t asof; /* snapshot mount */
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776 hammer_tid_t next_tid;
777 hammer_tid_t flush_tid1; /* flusher tid sequencing */
778 hammer_tid_t flush_tid2; /* flusher tid sequencing */
e63644f0 779 int64_t copy_stat_freebigblocks; /* number of free bigblocks */
02428fb6 780 u_int32_t undo_seqno; /* UNDO/REDO FIFO seqno */
e63644f0 781
513ca7d7 782 struct netexport export;
9480ff55 783 struct hammer_lock sync_lock;
c9b9e29d 784 struct hammer_lock free_lock;
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785 struct hammer_lock undo_lock;
786 struct hammer_lock blkmap_lock;
83f2a3aa 787 struct hammer_lock snapshot_lock;
0729c8c8 788 struct hammer_blockmap blockmap[HAMMER_MAX_ZONES];
e8599db1
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789 struct hammer_undo undos[HAMMER_MAX_UNDOS];
790 int undo_alloc;
791 TAILQ_HEAD(, hammer_undo) undo_lru_list;
cebe9493 792 TAILQ_HEAD(, hammer_reserve) delay_list;
7a61b85d 793 struct hammer_flush_group_list flush_group_list;
7b6ccb11 794 hammer_flush_group_t next_flush_group;
0729c8c8 795 TAILQ_HEAD(, hammer_objid_cache) objid_cache_list;
7bc5b8c2 796 TAILQ_HEAD(, hammer_reclaim) reclaim_list;
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797};
798
8cd0a023 799typedef struct hammer_mount *hammer_mount_t;
8750964d 800
cdb6e4e6 801#define HAMMER_MOUNT_CRITICAL_ERROR 0x0001
82010f9f 802#define HAMMER_MOUNT_FLUSH_RECOVERY 0x0002
9f5097dc 803
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804struct hammer_sync_info {
805 int error;
806 int waitfor;
807};
808
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809#endif
810
a7e9bef1
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811/*
812 * checkspace slop (8MB chunks), higher numbers are more conservative.
813 */
93291532
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814#define HAMMER_CHKSPC_REBLOCK 25
815#define HAMMER_CHKSPC_MIRROR 20
816#define HAMMER_CHKSPC_WRITE 20
817#define HAMMER_CHKSPC_CREATE 20
818#define HAMMER_CHKSPC_REMOVE 10
7b6ccb11 819#define HAMMER_CHKSPC_EMERGENCY 0
a7e9bef1 820
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MD
821#if defined(_KERNEL)
822
823extern struct vop_ops hammer_vnode_vops;
7a04d74f
MD
824extern struct vop_ops hammer_spec_vops;
825extern struct vop_ops hammer_fifo_vops;
66325755 826extern struct bio_ops hammer_bioops;
427e5fc6 827
2f85fa4d 828extern int hammer_debug_io;
d5ef456e 829extern int hammer_debug_general;
77062c8a 830extern int hammer_debug_debug;
e8599db1 831extern int hammer_debug_inode;
7d683b0f 832extern int hammer_debug_locks;
b3deaf57 833extern int hammer_debug_btree;
d113fda1 834extern int hammer_debug_tid;
b33e2cc0 835extern int hammer_debug_recover;
46fe7ae1 836extern int hammer_debug_recover_faults;
fc73edd8 837extern int hammer_debug_critical;
1b0ab2c3 838extern int hammer_cluster_enable;
7a61b85d 839extern int hammer_count_fsyncs;
b3deaf57 840extern int hammer_count_inodes;
af209b0f 841extern int hammer_count_iqueued;
9f5097dc 842extern int hammer_count_reclaiming;
b3deaf57
MD
843extern int hammer_count_records;
844extern int hammer_count_record_datas;
845extern int hammer_count_volumes;
b3deaf57
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846extern int hammer_count_buffers;
847extern int hammer_count_nodes;
a7e9bef1 848extern int64_t hammer_count_extra_space_used;
cb51be26
MD
849extern int64_t hammer_stats_btree_lookups;
850extern int64_t hammer_stats_btree_searches;
851extern int64_t hammer_stats_btree_inserts;
852extern int64_t hammer_stats_btree_deletes;
853extern int64_t hammer_stats_btree_elements;
854extern int64_t hammer_stats_btree_splits;
855extern int64_t hammer_stats_btree_iterations;
39d8fd63 856extern int64_t hammer_stats_btree_root_iterations;
cb51be26 857extern int64_t hammer_stats_record_iterations;
ce0138a6
MD
858extern int64_t hammer_stats_file_read;
859extern int64_t hammer_stats_file_write;
860extern int64_t hammer_stats_file_iopsr;
861extern int64_t hammer_stats_file_iopsw;
862extern int64_t hammer_stats_disk_read;
863extern int64_t hammer_stats_disk_write;
864extern int64_t hammer_stats_inode_flushes;
865extern int64_t hammer_stats_commits;
89e744ce 866extern int64_t hammer_stats_undo;
f5a07a7a 867extern int hammer_count_dirtybufspace;
a99b9ea2 868extern int hammer_count_refedbufs;
0832c9bb 869extern int hammer_count_reservations;
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MD
870extern int hammer_count_io_running_read;
871extern int hammer_count_io_running_write;
872extern int hammer_count_io_locked;
f5a07a7a 873extern int hammer_limit_dirtybufspace;
47637bff 874extern int hammer_limit_recs;
de996e86 875extern int hammer_limit_inode_recs;
ff003b11 876extern int hammer_limit_reclaim;
1f07f686 877extern int hammer_bio_count;
cb51be26 878extern int hammer_verify_zone;
1b0ab2c3 879extern int hammer_verify_data;
cb51be26 880extern int hammer_write_mode;
3e583440 881extern int hammer_yield_check;
6f3d87c0 882extern int hammer_fsync_mode;
21fde338 883extern int hammer_autoflush;
7d683b0f 884extern int64_t hammer_contention_count;
b3deaf57 885
cdb6e4e6
MD
886void hammer_critical_error(hammer_mount_t hmp, hammer_inode_t ip,
887 int error, const char *msg);
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888int hammer_vop_inactive(struct vop_inactive_args *);
889int hammer_vop_reclaim(struct vop_reclaim_args *);
e8599db1 890int hammer_get_vnode(struct hammer_inode *ip, struct vnode **vpp);
36f82b23 891struct hammer_inode *hammer_get_inode(hammer_transaction_t trans,
adf01747 892 hammer_inode_t dip, int64_t obj_id,
ddfdf542
MD
893 hammer_tid_t asof, u_int32_t localization,
894 int flags, int *errorp);
4c286c36
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895struct hammer_inode *hammer_get_dummy_inode(hammer_transaction_t trans,
896 hammer_inode_t dip, int64_t obj_id,
897 hammer_tid_t asof, u_int32_t localization,
898 int flags, int *errorp);
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MD
899struct hammer_inode *hammer_find_inode(hammer_transaction_t trans,
900 int64_t obj_id, hammer_tid_t asof,
901 u_int32_t localization);
43c665ae
MD
902void hammer_scan_inode_snapshots(hammer_mount_t hmp,
903 hammer_inode_info_t iinfo,
904 int (*callback)(hammer_inode_t ip, void *data),
905 void *data);
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906void hammer_put_inode(struct hammer_inode *ip);
907void hammer_put_inode_ref(struct hammer_inode *ip);
4a2796f3 908void hammer_inode_waitreclaims(hammer_mount_t hmp);
82010f9f 909void hammer_inode_waithard(hammer_mount_t hmp);
66325755 910
8cd0a023 911int hammer_unload_volume(hammer_volume_t volume, void *data __unused);
51c35492
MD
912int hammer_adjust_volume_mode(hammer_volume_t volume, void *data __unused);
913
a89aec1b 914int hammer_unload_buffer(hammer_buffer_t buffer, void *data __unused);
7c19b529
MN
915int hammer_install_volume(hammer_mount_t hmp, const char *volname,
916 struct vnode *devvp);
1b0ab2c3 917int hammer_mountcheck_volumes(hammer_mount_t hmp);
8cd0a023 918
e469566b 919int hammer_mem_add(hammer_record_t record);
45a014dc 920int hammer_ip_lookup(hammer_cursor_t cursor);
4e17f465 921int hammer_ip_first(hammer_cursor_t cursor);
a89aec1b 922int hammer_ip_next(hammer_cursor_t cursor);
8cd0a023 923int hammer_ip_resolve_data(hammer_cursor_t cursor);
e63644f0
MD
924int hammer_ip_delete_record(hammer_cursor_t cursor, hammer_inode_t ip,
925 hammer_tid_t tid);
83f2a3aa
MD
926int hammer_create_at_cursor(hammer_cursor_t cursor,
927 hammer_btree_leaf_elm_t leaf, void *udata, int mode);
602c6cb8 928int hammer_delete_at_cursor(hammer_cursor_t cursor, int delete_flags,
842e7a70
MD
929 hammer_tid_t delete_tid, u_int32_t delete_ts,
930 int track, int64_t *stat_bytes);
b3deaf57 931int hammer_ip_check_directory_empty(hammer_transaction_t trans,
98f7132d 932 hammer_inode_t ip);
fbc6e32a 933int hammer_sync_hmp(hammer_mount_t hmp, int waitfor);
f36a9737
MD
934int hammer_queue_inodes_flusher(hammer_mount_t hmp, int waitfor);
935
8cd0a023 936hammer_record_t
11ad5ade 937 hammer_alloc_mem_record(hammer_inode_t ip, int data_len);
d36ec43b 938void hammer_flush_record_done(hammer_record_t record, int error);
af209b0f 939void hammer_wait_mem_record_ident(hammer_record_t record, const char *ident);
b3deaf57 940void hammer_rel_mem_record(hammer_record_t record);
b84de5af 941
6a37e7e4 942int hammer_cursor_up(hammer_cursor_t cursor);
f36a9737 943int hammer_cursor_up_locked(hammer_cursor_t cursor);
8cd0a023 944int hammer_cursor_down(hammer_cursor_t cursor);
6a37e7e4 945int hammer_cursor_upgrade(hammer_cursor_t cursor);
7bc5b8c2 946int hammer_cursor_upgrade_node(hammer_cursor_t cursor);
6a37e7e4 947void hammer_cursor_downgrade(hammer_cursor_t cursor);
32c90105
MD
948int hammer_cursor_seek(hammer_cursor_t cursor, hammer_node_t node,
949 int index);
af209b0f 950void hammer_lock_ex_ident(struct hammer_lock *lock, const char *ident);
8cd0a023
MD
951int hammer_lock_ex_try(struct hammer_lock *lock);
952void hammer_lock_sh(struct hammer_lock *lock);
47637bff 953int hammer_lock_sh_try(struct hammer_lock *lock);
6a37e7e4
MD
954int hammer_lock_upgrade(struct hammer_lock *lock);
955void hammer_lock_downgrade(struct hammer_lock *lock);
b3bad96f 956int hammer_lock_status(struct hammer_lock *lock);
427e5fc6 957void hammer_unlock(struct hammer_lock *lock);
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MD
958void hammer_ref(struct hammer_lock *lock);
959void hammer_unref(struct hammer_lock *lock);
8cd0a023 960
2f85fa4d
MD
961void hammer_sync_lock_ex(hammer_transaction_t trans);
962void hammer_sync_lock_sh(hammer_transaction_t trans);
47637bff 963int hammer_sync_lock_sh_try(hammer_transaction_t trans);
2f85fa4d
MD
964void hammer_sync_unlock(hammer_transaction_t trans);
965
66325755 966u_int32_t hammer_to_unix_xid(uuid_t *uuid);
8cd0a023 967void hammer_guid_to_uuid(uuid_t *uuid, u_int32_t guid);
ddfdf542
MD
968void hammer_time_to_timespec(u_int64_t xtime, struct timespec *ts);
969u_int64_t hammer_timespec_to_time(struct timespec *ts);
bc6c1f13
MD
970int hammer_str_to_tid(const char *str, int *ispfsp,
971 hammer_tid_t *tidp, u_int32_t *localizationp);
972int hammer_is_atatext(const char *name, int len);
5a64efa1
MD
973hammer_tid_t hammer_alloc_objid(hammer_mount_t hmp, hammer_inode_t dip,
974 int64_t namekey);
0729c8c8
MD
975void hammer_clear_objid(hammer_inode_t dip);
976void hammer_destroy_objid_cache(hammer_mount_t hmp);
8cd0a023 977
e8599db1 978int hammer_enter_undo_history(hammer_mount_t hmp, hammer_off_t offset,
b3bad96f 979 int bytes);
e8599db1 980void hammer_clear_undo_history(hammer_mount_t hmp);
66325755 981enum vtype hammer_get_vnode_type(u_int8_t obj_type);
6b4f890b 982int hammer_get_dtype(u_int8_t obj_type);
66325755 983u_int8_t hammer_get_obj_type(enum vtype vtype);
5e435c92
MD
984int64_t hammer_directory_namekey(hammer_inode_t dip, const void *name, int len,
985 u_int32_t *max_iterationsp);
e63644f0 986int hammer_nohistory(hammer_inode_t ip);
427e5fc6 987
36f82b23 988int hammer_init_cursor(hammer_transaction_t trans, hammer_cursor_t cursor,
b3bad96f 989 hammer_node_cache_t cache, hammer_inode_t ip);
4e17f465 990void hammer_normalize_cursor(hammer_cursor_t cursor);
8cd0a023 991void hammer_done_cursor(hammer_cursor_t cursor);
b3bad96f 992int hammer_recover_cursor(hammer_cursor_t cursor);
982be4bf
MD
993void hammer_unlock_cursor(hammer_cursor_t cursor);
994int hammer_lock_cursor(hammer_cursor_t cursor);
3f43fb33
MD
995hammer_cursor_t hammer_push_cursor(hammer_cursor_t ocursor);
996void hammer_pop_cursor(hammer_cursor_t ocursor, hammer_cursor_t ncursor);
b3bad96f
MD
997
998void hammer_cursor_replaced_node(hammer_node_t onode, hammer_node_t nnode);
999void hammer_cursor_removed_node(hammer_node_t onode, hammer_node_t parent,
1000 int index);
1001void hammer_cursor_split_node(hammer_node_t onode, hammer_node_t nnode,
1002 int index);
1775b6a0
MD
1003void hammer_cursor_moved_element(hammer_node_t onode, hammer_node_t nnode,
1004 int oindex, int nindex);
1005void hammer_cursor_parent_changed(hammer_node_t node, hammer_node_t oparent,
1006 hammer_node_t nparent, int nindex);
b3bad96f
MD
1007void hammer_cursor_inserted_element(hammer_node_t node, int index);
1008void hammer_cursor_deleted_element(hammer_node_t node, int index);
8cd0a023
MD
1009
1010int hammer_btree_lookup(hammer_cursor_t cursor);
d26d0ae9 1011int hammer_btree_first(hammer_cursor_t cursor);
32c90105 1012int hammer_btree_last(hammer_cursor_t cursor);
8cd0a023
MD
1013int hammer_btree_extract(hammer_cursor_t cursor, int flags);
1014int hammer_btree_iterate(hammer_cursor_t cursor);
32c90105 1015int hammer_btree_iterate_reverse(hammer_cursor_t cursor);
11ad5ade 1016int hammer_btree_insert(hammer_cursor_t cursor,
602c6cb8 1017 hammer_btree_leaf_elm_t elm, int *doprop);
8cd0a023 1018int hammer_btree_delete(hammer_cursor_t cursor);
4c038e17
MD
1019void hammer_btree_do_propagation(hammer_cursor_t cursor,
1020 hammer_pseudofs_inmem_t pfsm,
602c6cb8 1021 hammer_btree_leaf_elm_t leaf);
8cd0a023 1022int hammer_btree_cmp(hammer_base_elm_t key1, hammer_base_elm_t key2);
d26d0ae9 1023int hammer_btree_chkts(hammer_tid_t ts, hammer_base_elm_t key);
32c90105
MD
1024int hammer_btree_correct_rhb(hammer_cursor_t cursor, hammer_tid_t tid);
1025int hammer_btree_correct_lhb(hammer_cursor_t cursor, hammer_tid_t tid);
1026
2f85fa4d
MD
1027int btree_set_parent(hammer_transaction_t trans, hammer_node_t node,
1028 hammer_btree_elm_t elm);
1775b6a0
MD
1029void hammer_node_lock_init(hammer_node_lock_t parent, hammer_node_t node);
1030int hammer_btree_lock_children(hammer_cursor_t cursor, int depth,
1031 hammer_node_lock_t parent);
1032void hammer_btree_lock_copy(hammer_cursor_t cursor,
1033 hammer_node_lock_t parent);
7ddc70d1 1034int hammer_btree_sync_copy(hammer_cursor_t cursor,
1775b6a0 1035 hammer_node_lock_t parent);
bac808fe 1036void hammer_btree_unlock_children(hammer_cursor_t cursor,
1775b6a0 1037 hammer_node_lock_t parent);
bcac4bbb 1038int hammer_btree_search_node(hammer_base_elm_t elm, hammer_node_ondisk_t node);
82010f9f
MD
1039hammer_node_t hammer_btree_get_parent(hammer_transaction_t trans,
1040 hammer_node_t node, int *parent_indexp,
c82af904 1041 int *errorp, int try_exclusive);
b33e2cc0 1042
c0ade690
MD
1043void hammer_print_btree_node(hammer_node_ondisk_t ondisk);
1044void hammer_print_btree_elm(hammer_btree_elm_t elm, u_int8_t type, int i);
8750964d 1045
47197d71
MD
1046void *hammer_bread(struct hammer_mount *hmp, hammer_off_t off,
1047 int *errorp, struct hammer_buffer **bufferp);
1048void *hammer_bnew(struct hammer_mount *hmp, hammer_off_t off,
1049 int *errorp, struct hammer_buffer **bufferp);
4a2796f3
MD
1050void *hammer_bread_ext(struct hammer_mount *hmp, hammer_off_t off, int bytes,
1051 int *errorp, struct hammer_buffer **bufferp);
1052void *hammer_bnew_ext(struct hammer_mount *hmp, hammer_off_t off, int bytes,
1053 int *errorp, struct hammer_buffer **bufferp);
8cd0a023
MD
1054
1055hammer_volume_t hammer_get_root_volume(hammer_mount_t hmp, int *errorp);
427e5fc6 1056
8cd0a023 1057hammer_volume_t hammer_get_volume(hammer_mount_t hmp,
427e5fc6 1058 int32_t vol_no, int *errorp);
4a2796f3
MD
1059hammer_buffer_t hammer_get_buffer(hammer_mount_t hmp, hammer_off_t buf_offset,
1060 int bytes, int isnew, int *errorp);
1b0ab2c3
MD
1061void hammer_sync_buffers(hammer_mount_t hmp,
1062 hammer_off_t base_offset, int bytes);
362ec2dc 1063int hammer_del_buffers(hammer_mount_t hmp,
1b0ab2c3 1064 hammer_off_t base_offset,
362ec2dc
MD
1065 hammer_off_t zone2_offset, int bytes,
1066 int report_conflicts);
8cd0a023 1067
fbc6e32a 1068int hammer_ref_volume(hammer_volume_t volume);
8cd0a023
MD
1069int hammer_ref_buffer(hammer_buffer_t buffer);
1070void hammer_flush_buffer_nodes(hammer_buffer_t buffer);
1071
8cd0a023 1072void hammer_rel_volume(hammer_volume_t volume, int flush);
8cd0a023
MD
1073void hammer_rel_buffer(hammer_buffer_t buffer, int flush);
1074
513ca7d7
MD
1075int hammer_vfs_export(struct mount *mp, int op,
1076 const struct export_args *export);
82010f9f
MD
1077hammer_node_t hammer_get_node(hammer_transaction_t trans,
1078 hammer_off_t node_offset, int isnew, int *errorp);
740d8317 1079void hammer_ref_node(hammer_node_t node);
4c286c36 1080hammer_node_t hammer_ref_node_safe(hammer_transaction_t trans,
bcac4bbb 1081 hammer_node_cache_t cache, int *errorp);
8cd0a023 1082void hammer_rel_node(hammer_node_t node);
36f82b23
MD
1083void hammer_delete_node(hammer_transaction_t trans,
1084 hammer_node_t node);
bcac4bbb
MD
1085void hammer_cache_node(hammer_node_cache_t cache,
1086 hammer_node_t node);
1087void hammer_uncache_node(hammer_node_cache_t cache);
8cd0a023
MD
1088void hammer_flush_node(hammer_node_t node);
1089
427e5fc6
MD
1090void hammer_dup_buffer(struct hammer_buffer **bufferp,
1091 struct hammer_buffer *buffer);
df2ccbac
MD
1092hammer_node_t hammer_alloc_btree(hammer_transaction_t trans,
1093 hammer_off_t hint, int *errorp);
36f82b23 1094void *hammer_alloc_data(hammer_transaction_t trans, int32_t data_len,
bf3b416b 1095 u_int16_t rec_type, hammer_off_t *data_offsetp,
df2ccbac
MD
1096 struct hammer_buffer **data_bufferp,
1097 hammer_off_t hint, int *errorp);
bf686dbe 1098
02428fb6 1099int hammer_generate_undo(hammer_transaction_t trans,
059819e3 1100 hammer_off_t zone1_offset, void *base, int len);
02428fb6 1101int hammer_upgrade_undo_4(hammer_transaction_t trans);
427e5fc6 1102
66325755 1103void hammer_put_volume(struct hammer_volume *volume, int flush);
66325755 1104void hammer_put_buffer(struct hammer_buffer *buffer, int flush);
427e5fc6 1105
36f82b23
MD
1106hammer_off_t hammer_freemap_alloc(hammer_transaction_t trans,
1107 hammer_off_t owner, int *errorp);
1108void hammer_freemap_free(hammer_transaction_t trans, hammer_off_t phys_offset,
c3be93f2 1109 hammer_off_t owner, int *errorp);
0f65be10 1110int _hammer_checkspace(hammer_mount_t hmp, int slop, int64_t *resp);
36f82b23 1111hammer_off_t hammer_blockmap_alloc(hammer_transaction_t trans, int zone,
df2ccbac 1112 int bytes, hammer_off_t hint, int *errorp);
0832c9bb
MD
1113hammer_reserve_t hammer_blockmap_reserve(hammer_mount_t hmp, int zone,
1114 int bytes, hammer_off_t *zone_offp, int *errorp);
1115void hammer_blockmap_reserve_complete(hammer_mount_t hmp,
1116 hammer_reserve_t resv);
cb51be26 1117void hammer_reserve_clrdelay(hammer_mount_t hmp, hammer_reserve_t resv);
36f82b23
MD
1118void hammer_blockmap_free(hammer_transaction_t trans,
1119 hammer_off_t bmap_off, int bytes);
cdb6e4e6 1120int hammer_blockmap_finalize(hammer_transaction_t trans,
5e435c92 1121 hammer_reserve_t resv,
4a2796f3 1122 hammer_off_t bmap_off, int bytes);
bf686dbe
MD
1123int hammer_blockmap_getfree(hammer_mount_t hmp, hammer_off_t bmap_off,
1124 int *curp, int *errorp);
40043e7f
MD
1125hammer_off_t hammer_blockmap_lookup(hammer_mount_t hmp, hammer_off_t bmap_off,
1126 int *errorp);
bf686dbe
MD
1127hammer_off_t hammer_undo_lookup(hammer_mount_t hmp, hammer_off_t bmap_off,
1128 int *errorp);
06ad81ff
MD
1129int64_t hammer_undo_used(hammer_transaction_t trans);
1130int64_t hammer_undo_space(hammer_transaction_t trans);
1f07f686 1131int64_t hammer_undo_max(hammer_mount_t hmp);
710733a6 1132int hammer_undo_reclaim(hammer_io_t io);
1f07f686 1133
8cd0a023
MD
1134void hammer_start_transaction(struct hammer_transaction *trans,
1135 struct hammer_mount *hmp);
36f82b23
MD
1136void hammer_simple_transaction(struct hammer_transaction *trans,
1137 struct hammer_mount *hmp);
b84de5af
MD
1138void hammer_start_transaction_fls(struct hammer_transaction *trans,
1139 struct hammer_mount *hmp);
1140void hammer_done_transaction(struct hammer_transaction *trans);
83f2a3aa 1141hammer_tid_t hammer_alloc_tid(hammer_mount_t hmp, int count);
66325755 1142
47637bff 1143void hammer_modify_inode(hammer_inode_t ip, int flags);
f90dde4c 1144void hammer_flush_inode(hammer_inode_t ip, int flags);
cdb6e4e6 1145void hammer_flush_inode_done(hammer_inode_t ip, int error);
b84de5af
MD
1146void hammer_wait_inode(hammer_inode_t ip);
1147
8cd0a023
MD
1148int hammer_create_inode(struct hammer_transaction *trans, struct vattr *vap,
1149 struct ucred *cred, struct hammer_inode *dip,
5a64efa1 1150 const char *name, int namelen,
ea434b6f
MD
1151 hammer_pseudofs_inmem_t pfsm,
1152 struct hammer_inode **ipp);
a89aec1b 1153void hammer_rel_inode(hammer_inode_t ip, int flush);
51c35492 1154int hammer_reload_inode(hammer_inode_t ip, void *arg __unused);
af209b0f 1155int hammer_ino_rb_compare(hammer_inode_t ip1, hammer_inode_t ip2);
cdb6e4e6 1156int hammer_destroy_inode_callback(hammer_inode_t ip, void *data __unused);
51c35492 1157
02325004 1158int hammer_sync_inode(hammer_transaction_t trans, hammer_inode_t ip);
7b6ccb11 1159void hammer_test_inode(hammer_inode_t dip);
e8599db1 1160void hammer_inode_unloadable_check(hammer_inode_t ip, int getvp);
8cd0a023 1161
a89aec1b 1162int hammer_ip_add_directory(struct hammer_transaction *trans,
5a930e66 1163 hammer_inode_t dip, const char *name, int bytes,
8cd0a023 1164 hammer_inode_t nip);
a89aec1b 1165int hammer_ip_del_directory(struct hammer_transaction *trans,
8cd0a023
MD
1166 hammer_cursor_t cursor, hammer_inode_t dip,
1167 hammer_inode_t ip);
47637bff 1168hammer_record_t hammer_ip_add_bulk(hammer_inode_t ip, off_t file_offset,
0832c9bb 1169 void *data, int bytes, int *errorp);
47637bff 1170int hammer_ip_frontend_trunc(struct hammer_inode *ip, off_t file_size);
7a04d74f
MD
1171int hammer_ip_add_record(struct hammer_transaction *trans,
1172 hammer_record_t record);
4e17f465 1173int hammer_ip_delete_range(hammer_cursor_t cursor, hammer_inode_t ip,
47637bff 1174 int64_t ran_beg, int64_t ran_end, int truncating);
a9d52b76 1175int hammer_ip_delete_clean(hammer_cursor_t cursor, hammer_inode_t ip,
4e17f465
MD
1176 int *countp);
1177int hammer_ip_sync_data(hammer_cursor_t cursor, hammer_inode_t ip,
1178 int64_t offset, void *data, int bytes);
36f82b23 1179int hammer_ip_sync_record(hammer_transaction_t trans, hammer_record_t rec);
4e17f465 1180int hammer_ip_sync_record_cursor(hammer_cursor_t cursor, hammer_record_t rec);
ea434b6f
MD
1181hammer_pseudofs_inmem_t hammer_load_pseudofs(hammer_transaction_t trans,
1182 u_int32_t localization, int *errorp);
1183int hammer_mkroot_pseudofs(hammer_transaction_t trans, struct ucred *cred,
1184 hammer_pseudofs_inmem_t pfsm);
1185int hammer_save_pseudofs(hammer_transaction_t trans,
1186 hammer_pseudofs_inmem_t pfsm);
842e7a70 1187int hammer_unload_pseudofs(hammer_transaction_t trans, u_int32_t localization);
5fa5c92f 1188void hammer_rel_pseudofs(hammer_mount_t hmp, hammer_pseudofs_inmem_t pfsm);
7dc57964
MD
1189int hammer_ioctl(hammer_inode_t ip, u_long com, caddr_t data, int fflag,
1190 struct ucred *cred);
1191
748efb59 1192void hammer_io_init(hammer_io_t io, hammer_volume_t volume,
10a5d1ba 1193 enum hammer_io_type type);
2f85fa4d
MD
1194int hammer_io_read(struct vnode *devvp, struct hammer_io *io,
1195 hammer_off_t limit);
0e8bd897 1196void hammer_io_advance(struct hammer_io *io);
66325755 1197int hammer_io_new(struct vnode *devvp, struct hammer_io *io);
362ec2dc 1198int hammer_io_inval(hammer_volume_t volume, hammer_off_t zone2_offset);
ecca949a 1199struct buf *hammer_io_release(struct hammer_io *io, int flush);
710733a6 1200void hammer_io_flush(struct hammer_io *io, int reclaim);
1b0ab2c3 1201void hammer_io_wait(struct hammer_io *io);
055f5ff8 1202void hammer_io_waitdep(struct hammer_io *io);
af209b0f 1203void hammer_io_wait_all(hammer_mount_t hmp, const char *ident);
1b0ab2c3
MD
1204int hammer_io_direct_read(hammer_mount_t hmp, struct bio *bio,
1205 hammer_btree_leaf_elm_t leaf);
1206int hammer_io_direct_write(hammer_mount_t hmp, hammer_record_t record,
1207 struct bio *bio);
1208void hammer_io_direct_wait(hammer_record_t record);
43c665ae 1209void hammer_io_direct_uncache(hammer_mount_t hmp, hammer_btree_leaf_elm_t leaf);
9f5097dc
MD
1210void hammer_io_write_interlock(hammer_io_t io);
1211void hammer_io_done_interlock(hammer_io_t io);
4a2796f3 1212void hammer_io_clear_modify(struct hammer_io *io, int inval);
cebe9493 1213void hammer_io_clear_modlist(struct hammer_io *io);
748efb59 1214void hammer_io_flush_sync(hammer_mount_t hmp);
2faf0737 1215void hammer_io_clear_error(struct hammer_io *io);
748efb59 1216
36f82b23
MD
1217void hammer_modify_volume(hammer_transaction_t trans, hammer_volume_t volume,
1218 void *base, int len);
1219void hammer_modify_buffer(hammer_transaction_t trans, hammer_buffer_t buffer,
1220 void *base, int len);
10a5d1ba
MD
1221void hammer_modify_volume_done(hammer_volume_t volume);
1222void hammer_modify_buffer_done(hammer_buffer_t buffer);
0b075555 1223
36f82b23
MD
1224int hammer_ioc_reblock(hammer_transaction_t trans, hammer_inode_t ip,
1225 struct hammer_ioc_reblock *reblock);
1775b6a0
MD
1226int hammer_ioc_rebalance(hammer_transaction_t trans, hammer_inode_t ip,
1227 struct hammer_ioc_rebalance *rebal);
11ad5ade
MD
1228int hammer_ioc_prune(hammer_transaction_t trans, hammer_inode_t ip,
1229 struct hammer_ioc_prune *prune);
c82af904
MD
1230int hammer_ioc_mirror_read(hammer_transaction_t trans, hammer_inode_t ip,
1231 struct hammer_ioc_mirror_rw *mirror);
1232int hammer_ioc_mirror_write(hammer_transaction_t trans, hammer_inode_t ip,
1233 struct hammer_ioc_mirror_rw *mirror);
5fa5c92f 1234int hammer_ioc_set_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
ea434b6f 1235 struct ucred *cred, struct hammer_ioc_pseudofs_rw *pfs);
5fa5c92f
MD
1236int hammer_ioc_get_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1237 struct hammer_ioc_pseudofs_rw *pfs);
842e7a70
MD
1238int hammer_ioc_destroy_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1239 struct hammer_ioc_pseudofs_rw *pfs);
1240int hammer_ioc_downgrade_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1241 struct hammer_ioc_pseudofs_rw *pfs);
1242int hammer_ioc_upgrade_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1243 struct hammer_ioc_pseudofs_rw *pfs);
4889cbd4
MD
1244int hammer_ioc_wait_pseudofs(hammer_transaction_t trans, hammer_inode_t ip,
1245 struct hammer_ioc_pseudofs_rw *pfs);
d121f61c 1246int hammer_ioc_volume_add(hammer_transaction_t trans, hammer_inode_t ip,
865c9609
MN
1247 struct hammer_ioc_volume *ioc);
1248int hammer_ioc_volume_del(hammer_transaction_t trans, hammer_inode_t ip,
1249 struct hammer_ioc_volume *ioc);
bf686dbe 1250
855942b6 1251int hammer_signal_check(hammer_mount_t hmp);
bf686dbe 1252
059819e3
MD
1253void hammer_flusher_create(hammer_mount_t hmp);
1254void hammer_flusher_destroy(hammer_mount_t hmp);
1255void hammer_flusher_sync(hammer_mount_t hmp);
7a61b85d 1256int hammer_flusher_async(hammer_mount_t hmp, hammer_flush_group_t flg);
15e75dab 1257int hammer_flusher_async_one(hammer_mount_t hmp);
93291532 1258void hammer_flusher_wait(hammer_mount_t hmp, int seq);
82010f9f 1259void hammer_flusher_wait_next(hammer_mount_t hmp);
06ad81ff 1260int hammer_flusher_meta_limit(hammer_mount_t hmp);
93291532 1261int hammer_flusher_meta_halflimit(hammer_mount_t hmp);
06ad81ff 1262int hammer_flusher_undo_exhausted(hammer_transaction_t trans, int quarter);
525aad3a 1263void hammer_flusher_clean_loose_ios(hammer_mount_t hmp);
6c1f89f4 1264void hammer_flusher_finalize(hammer_transaction_t trans, int final);
1b0ab2c3
MD
1265int hammer_flusher_haswork(hammer_mount_t hmp);
1266
059819e3 1267
02428fb6
MD
1268int hammer_recover_stage1(hammer_mount_t hmp, hammer_volume_t rootvol);
1269int hammer_recover_stage2(hammer_mount_t hmp, hammer_volume_t rootvol);
51c35492 1270void hammer_recover_flush_buffers(hammer_mount_t hmp,
06ad81ff 1271 hammer_volume_t root_volume, int final);
f90dde4c 1272
19619882
MD
1273void hammer_crc_set_blockmap(hammer_blockmap_t blockmap);
1274void hammer_crc_set_volume(hammer_volume_ondisk_t ondisk);
ddfdf542 1275void hammer_crc_set_leaf(void *data, hammer_btree_leaf_elm_t leaf);
19619882
MD
1276
1277int hammer_crc_test_blockmap(hammer_blockmap_t blockmap);
1278int hammer_crc_test_volume(hammer_volume_ondisk_t ondisk);
19619882 1279int hammer_crc_test_btree(hammer_node_ondisk_t ondisk);
ddfdf542 1280int hammer_crc_test_leaf(void *data, hammer_btree_leaf_elm_t leaf);
77062c8a 1281void hkprintf(const char *ctl, ...);
a56cb012
MD
1282udev_t hammer_fsid_to_udev(uuid_t *uuid);
1283
19619882 1284
4a2796f3
MD
1285int hammer_blocksize(int64_t file_offset);
1286int64_t hammer_blockdemarc(int64_t file_offset1, int64_t file_offset2);
1287
0f65be10
MD
1288/*
1289 * Shortcut for _hammer_checkspace(), used all over the code.
1290 */
1291static __inline int
1292hammer_checkspace(hammer_mount_t hmp, int slop)
1293{
1294 return(_hammer_checkspace(hmp, slop, NULL));
1295}
1296
055f5ff8 1297#endif
427e5fc6 1298
8cd0a023 1299static __inline void
af209b0f
MD
1300hammer_wait_mem_record(hammer_record_t record)
1301{
1302 hammer_wait_mem_record_ident(record, "hmmwai");
1303}
1304
1305static __inline void
1306hammer_lock_ex(struct hammer_lock *lock)
1307{
1308 hammer_lock_ex_ident(lock, "hmrlck");
1309}
1310
bcac4bbb
MD
1311/*
1312 * Indicate that a B-Tree node is being modified.
1313 */
af209b0f 1314static __inline void
36f82b23 1315hammer_modify_node_noundo(hammer_transaction_t trans, hammer_node_t node)
bf686dbe 1316{
4c286c36 1317 KKASSERT((node->flags & HAMMER_NODE_CRCBAD) == 0);
36f82b23 1318 hammer_modify_buffer(trans, node->buffer, NULL, 0);
bf686dbe
MD
1319}
1320
1321static __inline void
36f82b23 1322hammer_modify_node_all(hammer_transaction_t trans, struct hammer_node *node)
8cd0a023 1323{
4c286c36 1324 KKASSERT((node->flags & HAMMER_NODE_CRCBAD) == 0);
36f82b23
MD
1325 hammer_modify_buffer(trans, node->buffer,
1326 node->ondisk, sizeof(*node->ondisk));
427e5fc6
MD
1327}
1328
bf686dbe 1329static __inline void
36f82b23
MD
1330hammer_modify_node(hammer_transaction_t trans, hammer_node_t node,
1331 void *base, int len)
bf686dbe 1332{
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1333 hammer_crc_t *crcptr;
1334
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1335 KKASSERT((char *)base >= (char *)node->ondisk &&
1336 (char *)base + len <=
1337 (char *)node->ondisk + sizeof(*node->ondisk));
4c286c36 1338 KKASSERT((node->flags & HAMMER_NODE_CRCBAD) == 0);
36f82b23 1339 hammer_modify_buffer(trans, node->buffer, base, len);
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1340 crcptr = &node->ondisk->crc;
1341 hammer_modify_buffer(trans, node->buffer, crcptr, sizeof(hammer_crc_t));
1342 --node->buffer->io.modify_refs; /* only want one ref */
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1343}
1344
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1345/*
1346 * Indicate that the specified modifications have been completed.
1347 *
1348 * Do not try to generate the crc here, it's very expensive to do and a
1349 * sequence of insertions or deletions can result in many calls to this
1350 * function on the same node.
1351 */
bf686dbe 1352static __inline void
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1353hammer_modify_node_done(hammer_node_t node)
1354{
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1355 node->flags |= HAMMER_NODE_CRCGOOD;
1356 if ((node->flags & HAMMER_NODE_NEEDSCRC) == 0) {
1357 node->flags |= HAMMER_NODE_NEEDSCRC;
1358 node->buffer->io.gencrc = 1;
1359 hammer_ref_node(node);
1360 }
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1361 hammer_modify_buffer_done(node->buffer);
1362}
1363
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1364#define hammer_modify_volume_field(trans, vol, field) \
1365 hammer_modify_volume(trans, vol, &(vol)->ondisk->field, \
1366 sizeof((vol)->ondisk->field))
1367
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1368#define hammer_modify_node_field(trans, node, field) \
1369 hammer_modify_node(trans, node, &(node)->ondisk->field, \
1370 sizeof((node)->ondisk->field))
1371
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1372/*
1373 * The HAMMER_INODE_CAP_DIR_LOCAL_INO capability is set on newly
1374 * created directories for HAMMER version 2 or greater and causes
1375 * directory entries to be placed the inode localization zone in
1376 * the B-Tree instead of the misc zone.
1377 *
1378 * This greatly improves localization between directory entries and
1379 * inodes
1380 */
1381static __inline u_int32_t
1382hammer_dir_localization(hammer_inode_t dip)
1383{
1384 if (dip->ino_data.cap_flags & HAMMER_INODE_CAP_DIR_LOCAL_INO)
1385 return(HAMMER_LOCALIZE_INODE);
1386 else
1387 return(HAMMER_LOCALIZE_MISC);
1388}