Print this page
zpool import speedup
| Split |
Close |
| Expand all |
| Collapse all |
--- old/usr/src/uts/common/fs/zfs/sys/spa.h
+++ new/usr/src/uts/common/fs/zfs/sys/spa.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 23 * Copyright (c) 2013 by Delphix. All rights reserved.
24 24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25 25 */
26 26
27 27 #ifndef _SYS_SPA_H
28 28 #define _SYS_SPA_H
29 29
30 30 #include <sys/avl.h>
31 31 #include <sys/zfs_context.h>
32 32 #include <sys/nvpair.h>
33 33 #include <sys/sysmacros.h>
34 34 #include <sys/types.h>
35 35 #include <sys/fs/zfs.h>
36 36
37 37 #ifdef __cplusplus
38 38 extern "C" {
39 39 #endif
40 40
41 41 /*
42 42 * Forward references that lots of things need.
43 43 */
44 44 typedef struct spa spa_t;
45 45 typedef struct vdev vdev_t;
46 46 typedef struct metaslab metaslab_t;
47 47 typedef struct metaslab_group metaslab_group_t;
48 48 typedef struct metaslab_class metaslab_class_t;
49 49 typedef struct zio zio_t;
50 50 typedef struct zilog zilog_t;
51 51 typedef struct spa_aux_vdev spa_aux_vdev_t;
52 52 typedef struct ddt ddt_t;
53 53 typedef struct ddt_entry ddt_entry_t;
54 54 struct dsl_pool;
55 55 struct dsl_dataset;
56 56
57 57 /*
58 58 * General-purpose 32-bit and 64-bit bitfield encodings.
59 59 */
60 60 #define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len))
61 61 #define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len))
62 62 #define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low))
63 63 #define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low))
64 64
65 65 #define BF32_GET(x, low, len) BF32_DECODE(x, low, len)
66 66 #define BF64_GET(x, low, len) BF64_DECODE(x, low, len)
67 67
68 68 #define BF32_SET(x, low, len, val) do { \
69 69 ASSERT3U(val, <, 1U << (len)); \
70 70 ASSERT3U(low + len, <=, 32); \
71 71 (x) ^= BF32_ENCODE((x >> low) ^ (val), low, len); \
72 72 _NOTE(CONSTCOND) } while (0)
73 73
74 74 #define BF64_SET(x, low, len, val) do { \
75 75 ASSERT3U(val, <, 1ULL << (len)); \
76 76 ASSERT3U(low + len, <=, 64); \
77 77 ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)); \
78 78 _NOTE(CONSTCOND) } while (0)
79 79
80 80 #define BF32_GET_SB(x, low, len, shift, bias) \
81 81 ((BF32_GET(x, low, len) + (bias)) << (shift))
82 82 #define BF64_GET_SB(x, low, len, shift, bias) \
83 83 ((BF64_GET(x, low, len) + (bias)) << (shift))
84 84
85 85 #define BF32_SET_SB(x, low, len, shift, bias, val) do { \
86 86 ASSERT(IS_P2ALIGNED(val, 1U << shift)); \
87 87 ASSERT3S((val) >> (shift), >=, bias); \
88 88 BF32_SET(x, low, len, ((val) >> (shift)) - (bias)); \
89 89 _NOTE(CONSTCOND) } while (0)
90 90 #define BF64_SET_SB(x, low, len, shift, bias, val) do { \
91 91 ASSERT(IS_P2ALIGNED(val, 1ULL << shift)); \
92 92 ASSERT3S((val) >> (shift), >=, bias); \
93 93 BF64_SET(x, low, len, ((val) >> (shift)) - (bias)); \
94 94 _NOTE(CONSTCOND) } while (0)
95 95
96 96 /*
97 97 * We currently support nine block sizes, from 512 bytes to 128K.
98 98 * We could go higher, but the benefits are near-zero and the cost
99 99 * of COWing a giant block to modify one byte would become excessive.
100 100 */
101 101 #define SPA_MINBLOCKSHIFT 9
102 102 #define SPA_MAXBLOCKSHIFT 17
103 103 #define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT)
104 104 #define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT)
105 105
106 106 #define SPA_BLOCKSIZES (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1)
107 107
108 108 /*
109 109 * Size of block to hold the configuration data (a packed nvlist)
110 110 */
111 111 #define SPA_CONFIG_BLOCKSIZE (1ULL << 14)
112 112
113 113 /*
114 114 * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB.
115 115 * The ASIZE encoding should be at least 64 times larger (6 more bits)
116 116 * to support up to 4-way RAID-Z mirror mode with worst-case gang block
117 117 * overhead, three DVAs per bp, plus one more bit in case we do anything
118 118 * else that expands the ASIZE.
119 119 */
120 120 #define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */
121 121 #define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */
122 122 #define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */
123 123
124 124 /*
125 125 * All SPA data is represented by 128-bit data virtual addresses (DVAs).
126 126 * The members of the dva_t should be considered opaque outside the SPA.
127 127 */
128 128 typedef struct dva {
129 129 uint64_t dva_word[2];
130 130 } dva_t;
131 131
132 132 /*
133 133 * Each block has a 256-bit checksum -- strong enough for cryptographic hashes.
134 134 */
135 135 typedef struct zio_cksum {
136 136 uint64_t zc_word[4];
137 137 } zio_cksum_t;
138 138
139 139 /*
140 140 * Each block is described by its DVAs, time of birth, checksum, etc.
141 141 * The word-by-word, bit-by-bit layout of the blkptr is as follows:
142 142 *
143 143 * 64 56 48 40 32 24 16 8 0
144 144 * +-------+-------+-------+-------+-------+-------+-------+-------+
145 145 * 0 | vdev1 | GRID | ASIZE |
146 146 * +-------+-------+-------+-------+-------+-------+-------+-------+
147 147 * 1 |G| offset1 |
148 148 * +-------+-------+-------+-------+-------+-------+-------+-------+
149 149 * 2 | vdev2 | GRID | ASIZE |
150 150 * +-------+-------+-------+-------+-------+-------+-------+-------+
151 151 * 3 |G| offset2 |
152 152 * +-------+-------+-------+-------+-------+-------+-------+-------+
153 153 * 4 | vdev3 | GRID | ASIZE |
154 154 * +-------+-------+-------+-------+-------+-------+-------+-------+
155 155 * 5 |G| offset3 |
156 156 * +-------+-------+-------+-------+-------+-------+-------+-------+
157 157 * 6 |BDX|lvl| type | cksum |E| comp| PSIZE | LSIZE |
158 158 * +-------+-------+-------+-------+-------+-------+-------+-------+
159 159 * 7 | padding |
160 160 * +-------+-------+-------+-------+-------+-------+-------+-------+
161 161 * 8 | padding |
162 162 * +-------+-------+-------+-------+-------+-------+-------+-------+
163 163 * 9 | physical birth txg |
164 164 * +-------+-------+-------+-------+-------+-------+-------+-------+
165 165 * a | logical birth txg |
166 166 * +-------+-------+-------+-------+-------+-------+-------+-------+
167 167 * b | fill count |
168 168 * +-------+-------+-------+-------+-------+-------+-------+-------+
169 169 * c | checksum[0] |
170 170 * +-------+-------+-------+-------+-------+-------+-------+-------+
171 171 * d | checksum[1] |
172 172 * +-------+-------+-------+-------+-------+-------+-------+-------+
173 173 * e | checksum[2] |
174 174 * +-------+-------+-------+-------+-------+-------+-------+-------+
175 175 * f | checksum[3] |
176 176 * +-------+-------+-------+-------+-------+-------+-------+-------+
177 177 *
178 178 * Legend:
179 179 *
180 180 * vdev virtual device ID
181 181 * offset offset into virtual device
182 182 * LSIZE logical size
183 183 * PSIZE physical size (after compression)
184 184 * ASIZE allocated size (including RAID-Z parity and gang block headers)
185 185 * GRID RAID-Z layout information (reserved for future use)
186 186 * cksum checksum function
187 187 * comp compression function
188 188 * G gang block indicator
189 189 * B byteorder (endianness)
190 190 * D dedup
191 191 * X encryption (on version 30, which is not supported)
192 192 * E blkptr_t contains embedded data (see below)
193 193 * lvl level of indirection
194 194 * type DMU object type
195 195 * phys birth txg of block allocation; zero if same as logical birth txg
196 196 * log. birth transaction group in which the block was logically born
197 197 * fill count number of non-zero blocks under this bp
198 198 * checksum[4] 256-bit checksum of the data this bp describes
199 199 */
200 200
201 201 /*
202 202 * "Embedded" blkptr_t's don't actually point to a block, instead they
203 203 * have a data payload embedded in the blkptr_t itself. See the comment
204 204 * in blkptr.c for more details.
205 205 *
206 206 * The blkptr_t is laid out as follows:
207 207 *
208 208 * 64 56 48 40 32 24 16 8 0
209 209 * +-------+-------+-------+-------+-------+-------+-------+-------+
210 210 * 0 | payload |
211 211 * 1 | payload |
212 212 * 2 | payload |
213 213 * 3 | payload |
214 214 * 4 | payload |
215 215 * 5 | payload |
216 216 * +-------+-------+-------+-------+-------+-------+-------+-------+
217 217 * 6 |BDX|lvl| type | etype |E| comp| PSIZE| LSIZE |
218 218 * +-------+-------+-------+-------+-------+-------+-------+-------+
219 219 * 7 | payload |
220 220 * 8 | payload |
221 221 * 9 | payload |
222 222 * +-------+-------+-------+-------+-------+-------+-------+-------+
223 223 * a | logical birth txg |
224 224 * +-------+-------+-------+-------+-------+-------+-------+-------+
225 225 * b | payload |
226 226 * c | payload |
227 227 * d | payload |
228 228 * e | payload |
229 229 * f | payload |
230 230 * +-------+-------+-------+-------+-------+-------+-------+-------+
231 231 *
232 232 * Legend:
233 233 *
234 234 * payload contains the embedded data
235 235 * B (byteorder) byteorder (endianness)
236 236 * D (dedup) padding (set to zero)
237 237 * X encryption (set to zero; see above)
238 238 * E (embedded) set to one
239 239 * lvl indirection level
240 240 * type DMU object type
241 241 * etype how to interpret embedded data (BP_EMBEDDED_TYPE_*)
242 242 * comp compression function of payload
243 243 * PSIZE size of payload after compression, in bytes
244 244 * LSIZE logical size of payload, in bytes
245 245 * note that 25 bits is enough to store the largest
246 246 * "normal" BP's LSIZE (2^16 * 2^9) in bytes
247 247 * log. birth transaction group in which the block was logically born
248 248 *
249 249 * Note that LSIZE and PSIZE are stored in bytes, whereas for non-embedded
250 250 * bp's they are stored in units of SPA_MINBLOCKSHIFT.
251 251 * Generally, the generic BP_GET_*() macros can be used on embedded BP's.
252 252 * The B, D, X, lvl, type, and comp fields are stored the same as with normal
253 253 * BP's so the BP_SET_* macros can be used with them. etype, PSIZE, LSIZE must
254 254 * be set with the BPE_SET_* macros. BP_SET_EMBEDDED() should be called before
255 255 * other macros, as they assert that they are only used on BP's of the correct
256 256 * "embedded-ness".
257 257 */
258 258
259 259 #define BPE_GET_ETYPE(bp) \
260 260 (ASSERT(BP_IS_EMBEDDED(bp)), \
261 261 BF64_GET((bp)->blk_prop, 40, 8))
262 262 #define BPE_SET_ETYPE(bp, t) do { \
263 263 ASSERT(BP_IS_EMBEDDED(bp)); \
264 264 BF64_SET((bp)->blk_prop, 40, 8, t); \
265 265 _NOTE(CONSTCOND) } while (0)
266 266
267 267 #define BPE_GET_LSIZE(bp) \
268 268 (ASSERT(BP_IS_EMBEDDED(bp)), \
269 269 BF64_GET_SB((bp)->blk_prop, 0, 25, 0, 1))
270 270 #define BPE_SET_LSIZE(bp, x) do { \
271 271 ASSERT(BP_IS_EMBEDDED(bp)); \
272 272 BF64_SET_SB((bp)->blk_prop, 0, 25, 0, 1, x); \
273 273 _NOTE(CONSTCOND) } while (0)
274 274
275 275 #define BPE_GET_PSIZE(bp) \
276 276 (ASSERT(BP_IS_EMBEDDED(bp)), \
277 277 BF64_GET_SB((bp)->blk_prop, 25, 7, 0, 1))
278 278 #define BPE_SET_PSIZE(bp, x) do { \
279 279 ASSERT(BP_IS_EMBEDDED(bp)); \
280 280 BF64_SET_SB((bp)->blk_prop, 25, 7, 0, 1, x); \
281 281 _NOTE(CONSTCOND) } while (0)
282 282
283 283 typedef enum bp_embedded_type {
284 284 BP_EMBEDDED_TYPE_DATA,
285 285 BP_EMBEDDED_TYPE_RESERVED, /* Reserved for an unintegrated feature. */
286 286 NUM_BP_EMBEDDED_TYPES = BP_EMBEDDED_TYPE_RESERVED
287 287 } bp_embedded_type_t;
288 288
289 289 #define BPE_NUM_WORDS 14
290 290 #define BPE_PAYLOAD_SIZE (BPE_NUM_WORDS * sizeof (uint64_t))
291 291 #define BPE_IS_PAYLOADWORD(bp, wp) \
292 292 ((wp) != &(bp)->blk_prop && (wp) != &(bp)->blk_birth)
293 293
294 294 #define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */
295 295 #define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */
296 296
297 297 /*
298 298 * A block is a hole when it has either 1) never been written to, or
299 299 * 2) is zero-filled. In both cases, ZFS can return all zeroes for all reads
300 300 * without physically allocating disk space. Holes are represented in the
301 301 * blkptr_t structure by zeroed blk_dva. Correct checking for holes is
302 302 * done through the BP_IS_HOLE macro. For holes, the logical size, level,
303 303 * DMU object type, and birth times are all also stored for holes that
304 304 * were written to at some point (i.e. were punched after having been filled).
305 305 */
306 306 typedef struct blkptr {
307 307 dva_t blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */
308 308 uint64_t blk_prop; /* size, compression, type, etc */
309 309 uint64_t blk_pad[2]; /* Extra space for the future */
310 310 uint64_t blk_phys_birth; /* txg when block was allocated */
311 311 uint64_t blk_birth; /* transaction group at birth */
312 312 uint64_t blk_fill; /* fill count */
313 313 zio_cksum_t blk_cksum; /* 256-bit checksum */
314 314 } blkptr_t;
315 315
316 316 /*
317 317 * Macros to get and set fields in a bp or DVA.
318 318 */
319 319 #define DVA_GET_ASIZE(dva) \
320 320 BF64_GET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, SPA_MINBLOCKSHIFT, 0)
321 321 #define DVA_SET_ASIZE(dva, x) \
322 322 BF64_SET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, \
323 323 SPA_MINBLOCKSHIFT, 0, x)
324 324
325 325 #define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8)
326 326 #define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x)
327 327
328 328 #define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32)
329 329 #define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x)
330 330
331 331 #define DVA_GET_OFFSET(dva) \
332 332 BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0)
333 333 #define DVA_SET_OFFSET(dva, x) \
334 334 BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x)
335 335
336 336 #define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1)
337 337 #define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x)
338 338
339 339 #define BP_GET_LSIZE(bp) \
340 340 (BP_IS_EMBEDDED(bp) ? \
341 341 (BPE_GET_ETYPE(bp) == BP_EMBEDDED_TYPE_DATA ? BPE_GET_LSIZE(bp) : 0): \
342 342 BF64_GET_SB((bp)->blk_prop, 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1))
343 343 #define BP_SET_LSIZE(bp, x) do { \
344 344 ASSERT(!BP_IS_EMBEDDED(bp)); \
345 345 BF64_SET_SB((bp)->blk_prop, \
346 346 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \
347 347 _NOTE(CONSTCOND) } while (0)
348 348
349 349 #define BP_GET_PSIZE(bp) \
350 350 (BP_IS_EMBEDDED(bp) ? 0 : \
351 351 BF64_GET_SB((bp)->blk_prop, 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1))
352 352 #define BP_SET_PSIZE(bp, x) do { \
353 353 ASSERT(!BP_IS_EMBEDDED(bp)); \
354 354 BF64_SET_SB((bp)->blk_prop, \
355 355 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \
356 356 _NOTE(CONSTCOND) } while (0)
357 357
358 358 #define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 7)
359 359 #define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 7, x)
360 360
361 361 #define BP_IS_EMBEDDED(bp) BF64_GET((bp)->blk_prop, 39, 1)
362 362 #define BP_SET_EMBEDDED(bp, x) BF64_SET((bp)->blk_prop, 39, 1, x)
363 363
364 364 #define BP_GET_CHECKSUM(bp) \
365 365 (BP_IS_EMBEDDED(bp) ? ZIO_CHECKSUM_OFF : \
366 366 BF64_GET((bp)->blk_prop, 40, 8))
367 367 #define BP_SET_CHECKSUM(bp, x) do { \
368 368 ASSERT(!BP_IS_EMBEDDED(bp)); \
369 369 BF64_SET((bp)->blk_prop, 40, 8, x); \
370 370 _NOTE(CONSTCOND) } while (0)
371 371
372 372 #define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8)
373 373 #define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x)
374 374
375 375 #define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5)
376 376 #define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x)
377 377
378 378 #define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1)
379 379 #define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x)
380 380
381 381 #define BP_GET_BYTEORDER(bp) BF64_GET((bp)->blk_prop, 63, 1)
382 382 #define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x)
383 383
384 384 #define BP_PHYSICAL_BIRTH(bp) \
385 385 (BP_IS_EMBEDDED(bp) ? 0 : \
386 386 (bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth)
387 387
388 388 #define BP_SET_BIRTH(bp, logical, physical) \
389 389 { \
390 390 ASSERT(!BP_IS_EMBEDDED(bp)); \
391 391 (bp)->blk_birth = (logical); \
392 392 (bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \
393 393 }
394 394
395 395 #define BP_GET_FILL(bp) (BP_IS_EMBEDDED(bp) ? 1 : (bp)->blk_fill)
396 396
397 397 #define BP_GET_ASIZE(bp) \
398 398 (BP_IS_EMBEDDED(bp) ? 0 : \
399 399 DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
400 400 DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
401 401 DVA_GET_ASIZE(&(bp)->blk_dva[2]))
402 402
403 403 #define BP_GET_UCSIZE(bp) \
404 404 ((BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) ? \
405 405 BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp))
406 406
407 407 #define BP_GET_NDVAS(bp) \
408 408 (BP_IS_EMBEDDED(bp) ? 0 : \
409 409 !!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
410 410 !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
411 411 !!DVA_GET_ASIZE(&(bp)->blk_dva[2]))
412 412
413 413 #define BP_COUNT_GANG(bp) \
414 414 (BP_IS_EMBEDDED(bp) ? 0 : \
415 415 (DVA_GET_GANG(&(bp)->blk_dva[0]) + \
416 416 DVA_GET_GANG(&(bp)->blk_dva[1]) + \
417 417 DVA_GET_GANG(&(bp)->blk_dva[2])))
418 418
419 419 #define DVA_EQUAL(dva1, dva2) \
420 420 ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \
421 421 (dva1)->dva_word[0] == (dva2)->dva_word[0])
422 422
423 423 #define BP_EQUAL(bp1, bp2) \
424 424 (BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \
425 425 (bp1)->blk_birth == (bp2)->blk_birth && \
426 426 DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \
427 427 DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \
428 428 DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2]))
429 429
430 430 #define ZIO_CHECKSUM_EQUAL(zc1, zc2) \
431 431 (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \
432 432 ((zc1).zc_word[1] - (zc2).zc_word[1]) | \
433 433 ((zc1).zc_word[2] - (zc2).zc_word[2]) | \
434 434 ((zc1).zc_word[3] - (zc2).zc_word[3])))
435 435
436 436 #define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0)
437 437
438 438 #define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \
439 439 { \
440 440 (zcp)->zc_word[0] = w0; \
441 441 (zcp)->zc_word[1] = w1; \
442 442 (zcp)->zc_word[2] = w2; \
443 443 (zcp)->zc_word[3] = w3; \
444 444 }
445 445
446 446 #define BP_IDENTITY(bp) (ASSERT(!BP_IS_EMBEDDED(bp)), &(bp)->blk_dva[0])
447 447 #define BP_IS_GANG(bp) \
448 448 (BP_IS_EMBEDDED(bp) ? B_FALSE : DVA_GET_GANG(BP_IDENTITY(bp)))
449 449 #define DVA_IS_EMPTY(dva) ((dva)->dva_word[0] == 0ULL && \
450 450 (dva)->dva_word[1] == 0ULL)
451 451 #define BP_IS_HOLE(bp) \
452 452 (!BP_IS_EMBEDDED(bp) && DVA_IS_EMPTY(BP_IDENTITY(bp)))
453 453
454 454 /* BP_IS_RAIDZ(bp) assumes no block compression */
455 455 #define BP_IS_RAIDZ(bp) (DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \
456 456 BP_GET_PSIZE(bp))
457 457
458 458 #define BP_ZERO(bp) \
459 459 { \
460 460 (bp)->blk_dva[0].dva_word[0] = 0; \
461 461 (bp)->blk_dva[0].dva_word[1] = 0; \
462 462 (bp)->blk_dva[1].dva_word[0] = 0; \
463 463 (bp)->blk_dva[1].dva_word[1] = 0; \
464 464 (bp)->blk_dva[2].dva_word[0] = 0; \
465 465 (bp)->blk_dva[2].dva_word[1] = 0; \
466 466 (bp)->blk_prop = 0; \
467 467 (bp)->blk_pad[0] = 0; \
468 468 (bp)->blk_pad[1] = 0; \
469 469 (bp)->blk_phys_birth = 0; \
470 470 (bp)->blk_birth = 0; \
471 471 (bp)->blk_fill = 0; \
472 472 ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \
473 473 }
474 474
475 475 #ifdef _BIG_ENDIAN
476 476 #define ZFS_HOST_BYTEORDER (0ULL)
477 477 #else
478 478 #define ZFS_HOST_BYTEORDER (1ULL)
479 479 #endif
480 480
481 481 #define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER)
482 482
483 483 #define BP_SPRINTF_LEN 320
484 484
485 485 /*
486 486 * This macro allows code sharing between zfs, libzpool, and mdb.
487 487 * 'func' is either snprintf() or mdb_snprintf().
488 488 * 'ws' (whitespace) can be ' ' for single-line format, '\n' for multi-line.
489 489 */
490 490 #define SNPRINTF_BLKPTR(func, ws, buf, size, bp, type, checksum, compress) \
491 491 { \
492 492 static const char *copyname[] = \
493 493 { "zero", "single", "double", "triple" }; \
494 494 int len = 0; \
495 495 int copies = 0; \
496 496 \
497 497 if (bp == NULL) { \
498 498 len += func(buf + len, size - len, "<NULL>"); \
499 499 } else if (BP_IS_HOLE(bp)) { \
500 500 len += func(buf + len, size - len, "<hole>"); \
501 501 if (bp->blk_birth > 0) { \
502 502 len += func(buf + len, size - len, \
503 503 " birth=%lluL", \
504 504 (u_longlong_t)bp->blk_birth); \
505 505 } \
506 506 } else if (BP_IS_EMBEDDED(bp)) { \
507 507 len = func(buf + len, size - len, \
508 508 "EMBEDDED [L%llu %s] et=%u %s " \
509 509 "size=%llxL/%llxP birth=%lluL", \
510 510 (u_longlong_t)BP_GET_LEVEL(bp), \
511 511 type, \
512 512 (int)BPE_GET_ETYPE(bp), \
513 513 compress, \
514 514 (u_longlong_t)BPE_GET_LSIZE(bp), \
515 515 (u_longlong_t)BPE_GET_PSIZE(bp), \
516 516 (u_longlong_t)bp->blk_birth); \
517 517 } else { \
518 518 for (int d = 0; d < BP_GET_NDVAS(bp); d++) { \
519 519 const dva_t *dva = &bp->blk_dva[d]; \
520 520 if (DVA_IS_VALID(dva)) \
521 521 copies++; \
522 522 len += func(buf + len, size - len, \
523 523 "DVA[%d]=<%llu:%llx:%llx>%c", d, \
524 524 (u_longlong_t)DVA_GET_VDEV(dva), \
525 525 (u_longlong_t)DVA_GET_OFFSET(dva), \
526 526 (u_longlong_t)DVA_GET_ASIZE(dva), \
527 527 ws); \
528 528 } \
529 529 if (BP_IS_GANG(bp) && \
530 530 DVA_GET_ASIZE(&bp->blk_dva[2]) <= \
531 531 DVA_GET_ASIZE(&bp->blk_dva[1]) / 2) \
532 532 copies--; \
533 533 len += func(buf + len, size - len, \
534 534 "[L%llu %s] %s %s %s %s %s %s%c" \
535 535 "size=%llxL/%llxP birth=%lluL/%lluP fill=%llu%c" \
536 536 "cksum=%llx:%llx:%llx:%llx", \
537 537 (u_longlong_t)BP_GET_LEVEL(bp), \
538 538 type, \
539 539 checksum, \
540 540 compress, \
541 541 BP_GET_BYTEORDER(bp) == 0 ? "BE" : "LE", \
542 542 BP_IS_GANG(bp) ? "gang" : "contiguous", \
543 543 BP_GET_DEDUP(bp) ? "dedup" : "unique", \
544 544 copyname[copies], \
545 545 ws, \
546 546 (u_longlong_t)BP_GET_LSIZE(bp), \
547 547 (u_longlong_t)BP_GET_PSIZE(bp), \
548 548 (u_longlong_t)bp->blk_birth, \
549 549 (u_longlong_t)BP_PHYSICAL_BIRTH(bp), \
550 550 (u_longlong_t)BP_GET_FILL(bp), \
551 551 ws, \
552 552 (u_longlong_t)bp->blk_cksum.zc_word[0], \
553 553 (u_longlong_t)bp->blk_cksum.zc_word[1], \
554 554 (u_longlong_t)bp->blk_cksum.zc_word[2], \
555 555 (u_longlong_t)bp->blk_cksum.zc_word[3]); \
556 556 } \
557 557 ASSERT(len < size); \
558 558 }
559 559
560 560 #include <sys/dmu.h>
561 561
562 562 #define BP_GET_BUFC_TYPE(bp) \
|
↓ open down ↓ |
562 lines elided |
↑ open up ↑ |
563 563 (((BP_GET_LEVEL(bp) > 0) || (DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))) ? \
564 564 ARC_BUFC_METADATA : ARC_BUFC_DATA)
565 565
566 566 typedef enum spa_import_type {
567 567 SPA_IMPORT_EXISTING,
568 568 SPA_IMPORT_ASSEMBLE
569 569 } spa_import_type_t;
570 570
571 571 /* state manipulation functions */
572 572 extern int spa_open(const char *pool, spa_t **, void *tag);
573 +extern int spa_open_lock(const char *pool, spa_t **, void *tag, int lock);
573 574 extern int spa_open_rewind(const char *pool, spa_t **, void *tag,
574 575 nvlist_t *policy, nvlist_t **config);
575 576 extern int spa_get_stats(const char *pool, nvlist_t **config, char *altroot,
576 577 size_t buflen);
577 578 extern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props,
578 579 nvlist_t *zplprops);
579 580 extern int spa_import_rootpool(char *devpath, char *devid);
580 581 extern int spa_import(const char *pool, nvlist_t *config, nvlist_t *props,
581 582 uint64_t flags);
582 583 extern nvlist_t *spa_tryimport(nvlist_t *tryconfig);
583 584 extern int spa_destroy(char *pool);
584 585 extern int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force,
585 586 boolean_t hardforce);
586 587 extern int spa_reset(char *pool);
587 588 extern void spa_async_request(spa_t *spa, int flag);
588 589 extern void spa_async_unrequest(spa_t *spa, int flag);
589 590 extern void spa_async_suspend(spa_t *spa);
590 591 extern void spa_async_resume(spa_t *spa);
591 592 extern spa_t *spa_inject_addref(char *pool);
592 593 extern void spa_inject_delref(spa_t *spa);
593 594 extern void spa_scan_stat_init(spa_t *spa);
594 595 extern int spa_scan_get_stats(spa_t *spa, pool_scan_stat_t *ps);
595 596
596 597 #define SPA_ASYNC_CONFIG_UPDATE 0x01
597 598 #define SPA_ASYNC_REMOVE 0x02
598 599 #define SPA_ASYNC_PROBE 0x04
599 600 #define SPA_ASYNC_RESILVER_DONE 0x08
600 601 #define SPA_ASYNC_RESILVER 0x10
601 602 #define SPA_ASYNC_AUTOEXPAND 0x20
602 603 #define SPA_ASYNC_REMOVE_DONE 0x40
603 604 #define SPA_ASYNC_REMOVE_STOP 0x80
604 605
605 606 /*
606 607 * Controls the behavior of spa_vdev_remove().
607 608 */
608 609 #define SPA_REMOVE_UNSPARE 0x01
609 610 #define SPA_REMOVE_DONE 0x02
610 611
611 612 /* device manipulation */
612 613 extern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot);
613 614 extern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot,
614 615 int replacing);
615 616 extern int spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid,
616 617 int replace_done);
617 618 extern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare);
618 619 extern boolean_t spa_vdev_remove_active(spa_t *spa);
619 620 extern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath);
620 621 extern int spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru);
621 622 extern int spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config,
622 623 nvlist_t *props, boolean_t exp);
623 624
624 625 /* spare state (which is global across all pools) */
625 626 extern void spa_spare_add(vdev_t *vd);
626 627 extern void spa_spare_remove(vdev_t *vd);
627 628 extern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt);
628 629 extern void spa_spare_activate(vdev_t *vd);
629 630
630 631 /* L2ARC state (which is global across all pools) */
631 632 extern void spa_l2cache_add(vdev_t *vd);
632 633 extern void spa_l2cache_remove(vdev_t *vd);
633 634 extern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool);
634 635 extern void spa_l2cache_activate(vdev_t *vd);
635 636 extern void spa_l2cache_drop(spa_t *spa);
636 637
637 638 /* scanning */
638 639 extern int spa_scan(spa_t *spa, pool_scan_func_t func);
639 640 extern int spa_scan_stop(spa_t *spa);
640 641
641 642 /* spa syncing */
642 643 extern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */
643 644 extern void spa_sync_allpools(void);
644 645
645 646 /* spa namespace global mutex */
646 647 extern kmutex_t spa_namespace_lock;
647 648
648 649 /*
649 650 * SPA configuration functions in spa_config.c
650 651 */
651 652
652 653 #define SPA_CONFIG_UPDATE_POOL 0
653 654 #define SPA_CONFIG_UPDATE_VDEVS 1
654 655
655 656 extern void spa_config_sync(spa_t *, boolean_t, boolean_t);
656 657 extern void spa_config_load(void);
657 658 extern nvlist_t *spa_all_configs(uint64_t *);
658 659 extern void spa_config_set(spa_t *spa, nvlist_t *config);
659 660 extern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg,
660 661 int getstats);
661 662 extern void spa_config_update(spa_t *spa, int what);
662 663
663 664 /*
664 665 * Miscellaneous SPA routines in spa_misc.c
665 666 */
666 667
667 668 /* Namespace manipulation */
668 669 extern spa_t *spa_lookup(const char *name);
669 670 extern spa_t *spa_add(const char *name, nvlist_t *config, const char *altroot);
670 671 extern void spa_remove(spa_t *spa);
671 672 extern spa_t *spa_next(spa_t *prev);
672 673
673 674 /* Refcount functions */
674 675 extern void spa_open_ref(spa_t *spa, void *tag);
675 676 extern void spa_close(spa_t *spa, void *tag);
676 677 extern boolean_t spa_refcount_zero(spa_t *spa);
677 678
678 679 #define SCL_NONE 0x00
679 680 #define SCL_CONFIG 0x01
680 681 #define SCL_STATE 0x02
681 682 #define SCL_L2ARC 0x04 /* hack until L2ARC 2.0 */
682 683 #define SCL_ALLOC 0x08
683 684 #define SCL_ZIO 0x10
684 685 #define SCL_FREE 0x20
685 686 #define SCL_VDEV 0x40
686 687 #define SCL_LOCKS 7
687 688 #define SCL_ALL ((1 << SCL_LOCKS) - 1)
688 689 #define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO)
689 690
690 691 /* Pool configuration locks */
691 692 extern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw);
692 693 extern void spa_config_enter(spa_t *spa, int locks, void *tag, krw_t rw);
693 694 extern void spa_config_exit(spa_t *spa, int locks, void *tag);
694 695 extern int spa_config_held(spa_t *spa, int locks, krw_t rw);
695 696
696 697 /* Pool vdev add/remove lock */
697 698 extern uint64_t spa_vdev_enter(spa_t *spa);
698 699 extern uint64_t spa_vdev_config_enter(spa_t *spa);
699 700 extern void spa_vdev_config_exit(spa_t *spa, vdev_t *vd, uint64_t txg,
700 701 int error, char *tag);
701 702 extern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error);
702 703
703 704 /* Pool vdev state change lock */
704 705 extern void spa_vdev_state_enter(spa_t *spa, int oplock);
705 706 extern int spa_vdev_state_exit(spa_t *spa, vdev_t *vd, int error);
706 707
707 708 /* Log state */
708 709 typedef enum spa_log_state {
709 710 SPA_LOG_UNKNOWN = 0, /* unknown log state */
710 711 SPA_LOG_MISSING, /* missing log(s) */
711 712 SPA_LOG_CLEAR, /* clear the log(s) */
712 713 SPA_LOG_GOOD, /* log(s) are good */
713 714 } spa_log_state_t;
714 715
715 716 extern spa_log_state_t spa_get_log_state(spa_t *spa);
716 717 extern void spa_set_log_state(spa_t *spa, spa_log_state_t state);
717 718 extern int spa_offline_log(spa_t *spa);
718 719
719 720 /* Log claim callback */
720 721 extern void spa_claim_notify(zio_t *zio);
721 722
722 723 /* Accessor functions */
723 724 extern boolean_t spa_shutting_down(spa_t *spa);
724 725 extern struct dsl_pool *spa_get_dsl(spa_t *spa);
725 726 extern boolean_t spa_is_initializing(spa_t *spa);
726 727 extern blkptr_t *spa_get_rootblkptr(spa_t *spa);
727 728 extern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp);
728 729 extern void spa_altroot(spa_t *, char *, size_t);
729 730 extern int spa_sync_pass(spa_t *spa);
730 731 extern char *spa_name(spa_t *spa);
731 732 extern uint64_t spa_guid(spa_t *spa);
732 733 extern uint64_t spa_load_guid(spa_t *spa);
733 734 extern uint64_t spa_last_synced_txg(spa_t *spa);
734 735 extern uint64_t spa_first_txg(spa_t *spa);
735 736 extern uint64_t spa_syncing_txg(spa_t *spa);
736 737 extern uint64_t spa_version(spa_t *spa);
737 738 extern pool_state_t spa_state(spa_t *spa);
738 739 extern spa_load_state_t spa_load_state(spa_t *spa);
739 740 extern uint64_t spa_freeze_txg(spa_t *spa);
740 741 extern uint64_t spa_get_asize(spa_t *spa, uint64_t lsize);
741 742 extern uint64_t spa_get_dspace(spa_t *spa);
742 743 extern void spa_update_dspace(spa_t *spa);
743 744 extern uint64_t spa_version(spa_t *spa);
744 745 extern boolean_t spa_deflate(spa_t *spa);
745 746 extern metaslab_class_t *spa_normal_class(spa_t *spa);
746 747 extern metaslab_class_t *spa_log_class(spa_t *spa);
747 748 extern int spa_max_replication(spa_t *spa);
748 749 extern int spa_prev_software_version(spa_t *spa);
749 750 extern int spa_busy(void);
750 751 extern uint8_t spa_get_failmode(spa_t *spa);
751 752 extern boolean_t spa_suspended(spa_t *spa);
752 753 extern uint64_t spa_bootfs(spa_t *spa);
753 754 extern uint64_t spa_delegation(spa_t *spa);
754 755 extern objset_t *spa_meta_objset(spa_t *spa);
755 756 extern uint64_t spa_deadman_synctime(spa_t *spa);
756 757
757 758 /* Miscellaneous support routines */
758 759 extern void spa_activate_mos_feature(spa_t *spa, const char *feature,
759 760 dmu_tx_t *tx);
760 761 extern void spa_deactivate_mos_feature(spa_t *spa, const char *feature);
761 762 extern int spa_rename(const char *oldname, const char *newname);
762 763 extern spa_t *spa_by_guid(uint64_t pool_guid, uint64_t device_guid);
763 764 extern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid);
764 765 extern char *spa_strdup(const char *);
765 766 extern void spa_strfree(char *);
766 767 extern uint64_t spa_get_random(uint64_t range);
767 768 extern uint64_t spa_generate_guid(spa_t *spa);
768 769 extern void snprintf_blkptr(char *buf, size_t buflen, const blkptr_t *bp);
769 770 extern void spa_freeze(spa_t *spa);
770 771 extern int spa_change_guid(spa_t *spa);
771 772 extern void spa_upgrade(spa_t *spa, uint64_t version);
772 773 extern void spa_evict_all(void);
773 774 extern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid,
774 775 boolean_t l2cache);
775 776 extern boolean_t spa_has_spare(spa_t *, uint64_t guid);
776 777 extern uint64_t dva_get_dsize_sync(spa_t *spa, const dva_t *dva);
777 778 extern uint64_t bp_get_dsize_sync(spa_t *spa, const blkptr_t *bp);
778 779 extern uint64_t bp_get_dsize(spa_t *spa, const blkptr_t *bp);
779 780 extern boolean_t spa_has_slogs(spa_t *spa);
780 781 extern boolean_t spa_is_root(spa_t *spa);
781 782 extern boolean_t spa_writeable(spa_t *spa);
782 783
783 784 extern int spa_mode(spa_t *spa);
784 785 extern uint64_t strtonum(const char *str, char **nptr);
785 786
786 787 extern char *spa_his_ievent_table[];
787 788
788 789 extern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx);
789 790 extern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read,
790 791 char *his_buf);
791 792 extern int spa_history_log(spa_t *spa, const char *his_buf);
792 793 extern int spa_history_log_nvl(spa_t *spa, nvlist_t *nvl);
793 794 extern void spa_history_log_version(spa_t *spa, const char *operation);
794 795 extern void spa_history_log_internal(spa_t *spa, const char *operation,
795 796 dmu_tx_t *tx, const char *fmt, ...);
796 797 extern void spa_history_log_internal_ds(struct dsl_dataset *ds, const char *op,
797 798 dmu_tx_t *tx, const char *fmt, ...);
798 799 extern void spa_history_log_internal_dd(dsl_dir_t *dd, const char *operation,
799 800 dmu_tx_t *tx, const char *fmt, ...);
800 801
801 802 /* error handling */
802 803 struct zbookmark;
803 804 extern void spa_log_error(spa_t *spa, zio_t *zio);
804 805 extern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd,
805 806 zio_t *zio, uint64_t stateoroffset, uint64_t length);
806 807 extern void zfs_post_remove(spa_t *spa, vdev_t *vd);
807 808 extern void zfs_post_state_change(spa_t *spa, vdev_t *vd);
808 809 extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd);
809 810 extern uint64_t spa_get_errlog_size(spa_t *spa);
810 811 extern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count);
811 812 extern void spa_errlog_rotate(spa_t *spa);
812 813 extern void spa_errlog_drain(spa_t *spa);
813 814 extern void spa_errlog_sync(spa_t *spa, uint64_t txg);
814 815 extern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub);
815 816
816 817 /* vdev cache */
817 818 extern void vdev_cache_stat_init(void);
818 819 extern void vdev_cache_stat_fini(void);
819 820
820 821 /* Initialization and termination */
821 822 extern void spa_init(int flags);
822 823 extern void spa_fini(void);
823 824 extern void spa_boot_init();
824 825
825 826 /* properties */
826 827 extern int spa_prop_set(spa_t *spa, nvlist_t *nvp);
827 828 extern int spa_prop_get(spa_t *spa, nvlist_t **nvp);
828 829 extern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx);
829 830 extern void spa_configfile_set(spa_t *, nvlist_t *, boolean_t);
830 831
831 832 /* asynchronous event notification */
832 833 extern void spa_event_notify(spa_t *spa, vdev_t *vdev, const char *name);
833 834
834 835 #ifdef ZFS_DEBUG
835 836 #define dprintf_bp(bp, fmt, ...) do { \
836 837 if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
837 838 char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP); \
838 839 snprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \
839 840 dprintf(fmt " %s\n", __VA_ARGS__, __blkbuf); \
840 841 kmem_free(__blkbuf, BP_SPRINTF_LEN); \
841 842 } \
842 843 _NOTE(CONSTCOND) } while (0)
843 844 #else
844 845 #define dprintf_bp(bp, fmt, ...)
845 846 #endif
846 847
847 848 extern boolean_t spa_debug_enabled(spa_t *spa);
848 849 #define spa_dbgmsg(spa, ...) \
849 850 { \
850 851 if (spa_debug_enabled(spa)) \
851 852 zfs_dbgmsg(__VA_ARGS__); \
852 853 }
853 854
854 855 extern int spa_mode_global; /* mode, e.g. FREAD | FWRITE */
855 856
856 857 #ifdef __cplusplus
857 858 }
858 859 #endif
859 860
860 861 #endif /* _SYS_SPA_H */
|
↓ open down ↓ |
278 lines elided |
↑ open up ↑ |
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX