Line data Source code
1 : /* SPDX-License-Identifier: BSD-3-Clause
2 : * Copyright (C) 2017 Intel Corporation.
3 : * All rights reserved.
4 : * Copyright (c) 2022-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
5 : */
6 :
7 : #ifndef SPDK_BLOBSTORE_H
8 : #define SPDK_BLOBSTORE_H
9 :
10 : #include "spdk/assert.h"
11 : #include "spdk/blob.h"
12 : #include "spdk/queue.h"
13 : #include "spdk/util.h"
14 : #include "spdk/tree.h"
15 : #include "spdk/thread.h"
16 :
17 : #include "request.h"
18 :
19 : /* In Memory Data Structures
20 : *
21 : * The following data structures exist only in memory.
22 : */
23 :
24 : #define SPDK_BLOB_OPTS_CLUSTER_SZ (1024 * 1024)
25 : #define SPDK_BLOB_OPTS_NUM_MD_PAGES UINT32_MAX
26 : #define SPDK_BLOB_OPTS_MAX_MD_OPS 32
27 : #define SPDK_BLOB_OPTS_DEFAULT_CHANNEL_OPS 512
28 : #define SPDK_BLOB_BLOBID_HIGH_BIT (1ULL << 32)
29 :
30 : struct spdk_xattr {
31 : uint32_t index;
32 : uint16_t value_len;
33 : char *name;
34 : void *value;
35 : TAILQ_ENTRY(spdk_xattr) link;
36 : };
37 :
38 : /* The mutable part of the blob data that is sync'd to
39 : * disk. The data in here is both mutable and persistent.
40 : */
41 : struct spdk_blob_mut_data {
42 : /* Number of data clusters in the blob */
43 : uint64_t num_clusters;
44 :
45 : /* Array LBAs that are the beginning of a cluster, in
46 : * the order they appear in the blob.
47 : */
48 : uint64_t *clusters;
49 :
50 : /* The size of the clusters array. This is greater than or
51 : * equal to 'num_clusters'.
52 : */
53 : size_t cluster_array_size;
54 :
55 : /* The number of allocated clusters in the clusters array */
56 : uint64_t num_allocated_clusters;
57 :
58 : /* Number of extent pages */
59 : uint64_t num_extent_pages;
60 :
61 : /* Array of page offsets into the metadata region,
62 : * containing extents. Can contain entries for not yet
63 : * allocated pages. */
64 : uint32_t *extent_pages;
65 :
66 : /* The size of the extent page array. This is greater than or
67 : * equal to 'num_extent_pages'. */
68 : size_t extent_pages_array_size;
69 :
70 : /* Number of metadata pages */
71 : uint32_t num_pages;
72 :
73 : /* Array of page offsets into the metadata region, in
74 : * the order of the metadata page sequence.
75 : */
76 : uint32_t *pages;
77 : };
78 :
79 : enum spdk_blob_state {
80 : /* The blob in-memory version does not match the on-disk
81 : * version.
82 : */
83 : SPDK_BLOB_STATE_DIRTY,
84 :
85 : /* The blob in memory version of the blob matches the on disk
86 : * version.
87 : */
88 : SPDK_BLOB_STATE_CLEAN,
89 :
90 : /* The in-memory state being synchronized with the on-disk
91 : * blob state. */
92 : SPDK_BLOB_STATE_LOADING,
93 : };
94 :
95 : TAILQ_HEAD(spdk_xattr_tailq, spdk_xattr);
96 :
97 : struct spdk_blob_list {
98 : spdk_blob_id id;
99 : size_t clone_count;
100 : TAILQ_HEAD(, spdk_blob_list) clones;
101 : TAILQ_ENTRY(spdk_blob_list) link;
102 : };
103 :
104 : struct spdk_blob {
105 : struct spdk_blob_store *bs;
106 :
107 : uint32_t open_ref;
108 :
109 : spdk_blob_id id;
110 : spdk_blob_id parent_id;
111 :
112 : enum spdk_blob_state state;
113 :
114 : /* Two copies of the mutable data. One is a version
115 : * that matches the last known data on disk (clean).
116 : * The other (active) is the current data. Syncing
117 : * a blob makes the clean match the active.
118 : */
119 : struct spdk_blob_mut_data clean;
120 : struct spdk_blob_mut_data active;
121 :
122 : bool invalid;
123 : bool data_ro;
124 : bool md_ro;
125 :
126 : uint64_t invalid_flags;
127 : uint64_t data_ro_flags;
128 : uint64_t md_ro_flags;
129 :
130 : struct spdk_bs_dev *back_bs_dev;
131 :
132 : /* TODO: The xattrs are mutable, but we don't want to be
133 : * copying them unnecessarily. Figure this out.
134 : */
135 : struct spdk_xattr_tailq xattrs;
136 : struct spdk_xattr_tailq xattrs_internal;
137 :
138 : RB_ENTRY(spdk_blob) link;
139 :
140 : uint32_t frozen_refcnt;
141 : bool locked_operation_in_progress;
142 : enum blob_clear_method clear_method;
143 : bool extent_rle_found;
144 : bool extent_table_found;
145 : bool use_extent_table;
146 :
147 : /* A list of pending metadata pending_persists */
148 : TAILQ_HEAD(, spdk_blob_persist_ctx) pending_persists;
149 : TAILQ_HEAD(, spdk_blob_persist_ctx) persists_to_complete;
150 :
151 : /* Number of data clusters retrieved from extent table,
152 : * that many have to be read from extent pages. */
153 : uint64_t remaining_clusters_in_et;
154 : };
155 :
156 : struct spdk_blob_store {
157 : uint64_t md_start; /* Offset from beginning of disk, in pages */
158 : uint32_t md_len; /* Count, in pages */
159 : uint32_t md_page_size; /* Metadata page size */
160 :
161 : struct spdk_io_channel *md_channel;
162 : uint32_t max_channel_ops;
163 :
164 : struct spdk_thread *md_thread;
165 :
166 : struct spdk_bs_dev *dev;
167 :
168 : struct spdk_bit_array *used_md_pages; /* Protected by used_lock */
169 : struct spdk_bit_pool *used_clusters; /* Protected by used_lock */
170 : struct spdk_bit_array *used_blobids;
171 : struct spdk_bit_array *open_blobids;
172 :
173 : struct spdk_spinlock used_lock;
174 :
175 : uint32_t cluster_sz;
176 : uint64_t total_clusters;
177 : uint64_t total_data_clusters;
178 : uint64_t num_free_clusters; /* Protected by used_lock */
179 : uint64_t pages_per_cluster;
180 : uint64_t io_units_per_cluster;
181 : uint8_t pages_per_cluster_shift;
182 : uint8_t io_units_per_cluster_shift;
183 : uint32_t io_unit_size;
184 :
185 : spdk_blob_id super_blob;
186 : struct spdk_bs_type bstype;
187 :
188 : struct spdk_bs_cpl unload_cpl;
189 : int unload_err;
190 :
191 : RB_HEAD(spdk_blob_tree, spdk_blob) open_blobs;
192 : TAILQ_HEAD(, spdk_blob_list) snapshots;
193 :
194 : bool clean;
195 :
196 : spdk_bs_esnap_dev_create esnap_bs_dev_create;
197 : void *esnap_ctx;
198 :
199 : /* If external snapshot channels are being destroyed while
200 : * the blobstore is unloaded, the unload is deferred until
201 : * after the channel destruction completes.
202 : */
203 : uint32_t esnap_channels_unloading;
204 : spdk_bs_op_complete esnap_unload_cb_fn;
205 : void *esnap_unload_cb_arg;
206 : };
207 :
208 : struct spdk_bs_channel {
209 : struct spdk_bs_request_set *req_mem;
210 : TAILQ_HEAD(, spdk_bs_request_set) reqs;
211 :
212 : struct spdk_blob_store *bs;
213 :
214 : struct spdk_bs_dev *dev;
215 : struct spdk_io_channel *dev_channel;
216 :
217 : /* This page is only used during insert of a new cluster. */
218 : struct spdk_blob_md_page *new_cluster_page;
219 :
220 : TAILQ_HEAD(, spdk_bs_request_set) need_cluster_alloc;
221 : TAILQ_HEAD(, spdk_bs_request_set) queued_io;
222 :
223 : RB_HEAD(blob_esnap_channel_tree, blob_esnap_channel) esnap_channels;
224 : };
225 :
226 : /** operation type */
227 : enum spdk_blob_op_type {
228 : SPDK_BLOB_WRITE,
229 : SPDK_BLOB_READ,
230 : SPDK_BLOB_UNMAP,
231 : SPDK_BLOB_WRITE_ZEROES,
232 : SPDK_BLOB_WRITEV,
233 : SPDK_BLOB_READV,
234 : };
235 :
236 : /* back bs_dev */
237 :
238 : #define BLOB_SNAPSHOT "SNAP"
239 : #define SNAPSHOT_IN_PROGRESS "SNAPTMP"
240 : #define SNAPSHOT_PENDING_REMOVAL "SNAPRM"
241 : #define BLOB_EXTERNAL_SNAPSHOT_ID "EXTSNAP"
242 :
243 : struct spdk_blob_bs_dev {
244 : struct spdk_bs_dev bs_dev;
245 : struct spdk_blob *blob;
246 : };
247 :
248 : /* On-Disk Data Structures
249 : *
250 : * The following data structures exist on disk.
251 : */
252 : #define SPDK_BS_INITIAL_VERSION 1
253 : #define SPDK_BS_VERSION 3 /* current version */
254 :
255 : #pragma pack(push, 1)
256 :
257 : #define SPDK_MD_MASK_TYPE_USED_PAGES 0
258 : #define SPDK_MD_MASK_TYPE_USED_CLUSTERS 1
259 : #define SPDK_MD_MASK_TYPE_USED_BLOBIDS 2
260 :
261 : struct spdk_bs_md_mask {
262 : uint8_t type;
263 : uint32_t length; /* In bits */
264 : uint8_t mask[0];
265 : };
266 :
267 : #define SPDK_MD_DESCRIPTOR_TYPE_PADDING 0
268 : #define SPDK_MD_DESCRIPTOR_TYPE_XATTR 2
269 : #define SPDK_MD_DESCRIPTOR_TYPE_FLAGS 3
270 : #define SPDK_MD_DESCRIPTOR_TYPE_XATTR_INTERNAL 4
271 :
272 : /* Following descriptors define cluster layout in a blob.
273 : * EXTENT_RLE cannot be present in blobs metadata,
274 : * at the same time as EXTENT_TABLE and EXTENT_PAGE descriptors. */
275 :
276 : /* EXTENT_RLE descriptor holds an array of LBA that points to
277 : * beginning of allocated clusters. The array is run-length encoded,
278 : * with 0's being unallocated clusters. It is part of serialized
279 : * metadata chain for a blob. */
280 : #define SPDK_MD_DESCRIPTOR_TYPE_EXTENT_RLE 1
281 : /* EXTENT_TABLE descriptor holds array of md page offsets that
282 : * point to pages with EXTENT_PAGE descriptor. The 0's in the array
283 : * are run-length encoded, non-zero values are unallocated pages.
284 : * It is part of serialized metadata chain for a blob. */
285 : #define SPDK_MD_DESCRIPTOR_TYPE_EXTENT_TABLE 5
286 : /* EXTENT_PAGE descriptor holds an array of LBAs that point to
287 : * beginning of allocated clusters. The array is run-length encoded,
288 : * with 0's being unallocated clusters. It is NOT part of
289 : * serialized metadata chain for a blob. */
290 : #define SPDK_MD_DESCRIPTOR_TYPE_EXTENT_PAGE 6
291 :
292 : struct spdk_blob_md_descriptor_xattr {
293 : uint8_t type;
294 : uint32_t length;
295 :
296 : uint16_t name_length;
297 : uint16_t value_length;
298 :
299 : char name[0];
300 : /* String name immediately followed by string value. */
301 : };
302 :
303 : struct spdk_blob_md_descriptor_extent_rle {
304 : uint8_t type;
305 : uint32_t length;
306 :
307 : struct {
308 : uint32_t cluster_idx;
309 : uint32_t length; /* In units of clusters */
310 : } extents[0];
311 : };
312 :
313 : struct spdk_blob_md_descriptor_extent_table {
314 : uint8_t type;
315 : uint32_t length;
316 :
317 : /* Number of data clusters in the blob */
318 : uint64_t num_clusters;
319 :
320 : struct {
321 : uint32_t page_idx;
322 : uint32_t num_pages; /* In units of pages */
323 : } extent_page[0];
324 : };
325 :
326 : struct spdk_blob_md_descriptor_extent_page {
327 : uint8_t type;
328 : uint32_t length;
329 :
330 : /* First cluster index in this extent page */
331 : uint32_t start_cluster_idx;
332 :
333 : uint32_t cluster_idx[0];
334 : };
335 :
336 : #define SPDK_BLOB_THIN_PROV (1ULL << 0)
337 : #define SPDK_BLOB_INTERNAL_XATTR (1ULL << 1)
338 : #define SPDK_BLOB_EXTENT_TABLE (1ULL << 2)
339 : #define SPDK_BLOB_EXTERNAL_SNAPSHOT (1ULL << 3)
340 : #define SPDK_BLOB_INVALID_FLAGS_MASK (SPDK_BLOB_THIN_PROV | SPDK_BLOB_INTERNAL_XATTR | \
341 : SPDK_BLOB_EXTENT_TABLE | SPDK_BLOB_EXTERNAL_SNAPSHOT)
342 :
343 : #define SPDK_BLOB_READ_ONLY (1ULL << 0)
344 : #define SPDK_BLOB_DATA_RO_FLAGS_MASK SPDK_BLOB_READ_ONLY
345 :
346 : #define SPDK_BLOB_CLEAR_METHOD_SHIFT 0
347 : #define SPDK_BLOB_CLEAR_METHOD (3ULL << SPDK_BLOB_CLEAR_METHOD_SHIFT)
348 : #define SPDK_BLOB_MD_RO_FLAGS_MASK SPDK_BLOB_CLEAR_METHOD
349 :
350 : struct spdk_blob_md_descriptor_flags {
351 : uint8_t type;
352 : uint32_t length;
353 :
354 : /*
355 : * If a flag in invalid_flags is set that the application is not aware of,
356 : * it will not allow the blob to be opened.
357 : */
358 : uint64_t invalid_flags;
359 :
360 : /*
361 : * If a flag in data_ro_flags is set that the application is not aware of,
362 : * allow the blob to be opened in data_read_only and md_read_only mode.
363 : */
364 : uint64_t data_ro_flags;
365 :
366 : /*
367 : * If a flag in md_ro_flags is set the application is not aware of,
368 : * allow the blob to be opened in md_read_only mode.
369 : */
370 : uint64_t md_ro_flags;
371 : };
372 :
373 : struct spdk_blob_md_descriptor {
374 : uint8_t type;
375 : uint32_t length;
376 : };
377 :
378 : #define SPDK_INVALID_MD_PAGE UINT32_MAX
379 :
380 : struct spdk_blob_md_page {
381 : spdk_blob_id id;
382 :
383 : uint32_t sequence_num;
384 : uint32_t reserved0;
385 :
386 : /* Descriptors here */
387 : uint8_t descriptors[4072];
388 :
389 : uint32_t next;
390 : uint32_t crc;
391 : };
392 : #define SPDK_BS_PAGE_SIZE 0x1000
393 : SPDK_STATIC_ASSERT(SPDK_BS_PAGE_SIZE == sizeof(struct spdk_blob_md_page), "Invalid md page size");
394 :
395 : #define SPDK_BS_MAX_DESC_SIZE SPDK_SIZEOF_MEMBER(struct spdk_blob_md_page, descriptors)
396 :
397 : /* Maximum number of extents a single Extent Page can fit.
398 : * For an SPDK_BS_PAGE_SIZE of 4K SPDK_EXTENTS_PER_EP would be 512. */
399 : #define SPDK_EXTENTS_PER_EP_MAX ((SPDK_BS_MAX_DESC_SIZE - sizeof(struct spdk_blob_md_descriptor_extent_page)) / sizeof(uint32_t))
400 : #define SPDK_EXTENTS_PER_EP (spdk_align64pow2(SPDK_EXTENTS_PER_EP_MAX + 1) >> 1u)
401 :
402 : #define SPDK_BS_SUPER_BLOCK_SIG "SPDKBLOB"
403 :
404 : struct spdk_bs_super_block {
405 : uint8_t signature[8];
406 : uint32_t version;
407 : uint32_t length;
408 : uint32_t clean; /* If there was a clean shutdown, this is 1. */
409 : spdk_blob_id super_blob;
410 :
411 : uint32_t cluster_size; /* In bytes */
412 :
413 : uint32_t used_page_mask_start; /* Offset from beginning of disk, in pages */
414 : uint32_t used_page_mask_len; /* Count, in pages */
415 :
416 : uint32_t used_cluster_mask_start; /* Offset from beginning of disk, in pages */
417 : uint32_t used_cluster_mask_len; /* Count, in pages */
418 :
419 : uint32_t md_start; /* Offset from beginning of disk, in pages */
420 : uint32_t md_len; /* Count, in pages */
421 :
422 : struct spdk_bs_type bstype; /* blobstore type */
423 :
424 : uint32_t used_blobid_mask_start; /* Offset from beginning of disk, in pages */
425 : uint32_t used_blobid_mask_len; /* Count, in pages */
426 :
427 : uint64_t size; /* size of blobstore in bytes */
428 : uint32_t io_unit_size; /* Size of io unit in bytes */
429 :
430 : uint32_t md_page_size; /* Size in bytes */
431 : uint8_t reserved[3996];
432 :
433 : uint32_t crc;
434 : };
435 : SPDK_STATIC_ASSERT(sizeof(struct spdk_bs_super_block) == 0x1000, "Invalid super block size");
436 :
437 : #pragma pack(pop)
438 :
439 : struct spdk_bs_dev *bs_create_zeroes_dev(void);
440 : struct spdk_bs_dev *bs_create_blob_bs_dev(struct spdk_blob *blob);
441 : struct spdk_io_channel *blob_esnap_get_io_channel(struct spdk_io_channel *ch,
442 : struct spdk_blob *blob);
443 : bool blob_backed_with_zeroes_dev(struct spdk_blob *blob);
444 :
445 : /* Unit Conversions
446 : *
447 : * The blobstore works with several different units:
448 : * - Byte: Self explanatory
449 : * - LBA: The logical blocks on the backing storage device.
450 : * - Page: The read/write units of blobs and metadata. This is
451 : * an offset into a blob in units of 4KiB.
452 : * - Cluster Index: The disk is broken into a sequential list of
453 : * clusters. This is the offset from the beginning.
454 : *
455 : * NOTE: These conversions all act on simple magnitudes, not with any sort
456 : * of knowledge about the blobs themselves. For instance, converting
457 : * a page to an lba with the conversion function below simply converts
458 : * a number of pages to an equivalent number of lbas, but that
459 : * lba certainly isn't the right lba that corresponds to a page offset
460 : * for a particular blob.
461 : */
462 : static inline uint64_t
463 40698 : bs_byte_to_lba(struct spdk_blob_store *bs, uint64_t length)
464 : {
465 40698 : assert(length % bs->dev->blocklen == 0);
466 :
467 40698 : return length / bs->dev->blocklen;
468 : }
469 :
470 : static inline uint64_t
471 3296 : bs_dev_byte_to_lba(struct spdk_bs_dev *bs_dev, uint64_t length)
472 : {
473 3296 : assert(length % bs_dev->blocklen == 0);
474 :
475 3296 : return length / bs_dev->blocklen;
476 : }
477 :
478 : static inline uint64_t
479 34317 : bs_page_to_lba(struct spdk_blob_store *bs, uint64_t page)
480 : {
481 34317 : return page * bs->md_page_size / bs->dev->blocklen;
482 : }
483 :
484 : static inline uint64_t
485 23710 : bs_md_page_to_lba(struct spdk_blob_store *bs, uint32_t page)
486 : {
487 23710 : assert(page < bs->md_len);
488 23710 : return bs_page_to_lba(bs, page + bs->md_start);
489 : }
490 :
491 : static inline uint64_t
492 3420 : bs_dev_io_unit_to_lba(struct spdk_blob *blob, struct spdk_bs_dev *bs_dev, uint64_t io_unit)
493 : {
494 3420 : return io_unit * blob->bs->io_unit_size / bs_dev->blocklen;
495 : }
496 :
497 : static inline uint64_t
498 35 : bs_cluster_to_io_unit(struct spdk_blob_store *bs, uint32_t cluster)
499 : {
500 35 : return (uint64_t)cluster * bs->io_units_per_cluster;
501 : }
502 :
503 : static inline uint32_t
504 515 : bs_io_unit_to_cluster(struct spdk_blob_store *bs, uint64_t io_unit)
505 : {
506 515 : assert(io_unit % bs->io_units_per_cluster == 0);
507 :
508 515 : return io_unit / bs->io_units_per_cluster;
509 : }
510 :
511 : static inline uint64_t
512 1426389 : bs_cluster_to_lba(struct spdk_blob_store *bs, uint32_t cluster)
513 : {
514 1426389 : assert(bs->cluster_sz / bs->dev->blocklen > 0);
515 :
516 1426389 : return (uint64_t)cluster * (bs->cluster_sz / bs->dev->blocklen);
517 : }
518 :
519 : static inline uint32_t
520 1336941 : bs_lba_to_cluster(struct spdk_blob_store *bs, uint64_t lba)
521 : {
522 1336941 : assert(lba % (bs->cluster_sz / bs->dev->blocklen) == 0);
523 :
524 1336941 : return lba / (bs->cluster_sz / bs->dev->blocklen);
525 : }
526 :
527 : static inline uint64_t
528 10968 : bs_io_unit_to_back_dev_lba(struct spdk_blob *blob, uint64_t io_unit)
529 : {
530 10968 : return io_unit * (blob->bs->io_unit_size / blob->back_bs_dev->blocklen);
531 : }
532 :
533 : static inline uint64_t
534 7052 : bs_cluster_to_extent_table_id(uint64_t cluster_num)
535 : {
536 7052 : return cluster_num / SPDK_EXTENTS_PER_EP;
537 : }
538 :
539 : static inline uint32_t *
540 7052 : bs_cluster_to_extent_page(struct spdk_blob *blob, uint64_t cluster_num)
541 : {
542 7052 : uint64_t extent_table_id = bs_cluster_to_extent_table_id(cluster_num);
543 :
544 7052 : assert(blob->use_extent_table);
545 7052 : assert(extent_table_id < blob->active.extent_pages_array_size);
546 :
547 7052 : return &blob->active.extent_pages[extent_table_id];
548 : }
549 :
550 : static inline uint64_t
551 59543 : bs_io_units_per_cluster(struct spdk_blob *blob)
552 : {
553 59543 : return blob->bs->io_units_per_cluster;
554 : }
555 :
556 : /* End basic conversions */
557 :
558 : static inline uint64_t
559 38100 : bs_blobid_to_page(spdk_blob_id id)
560 : {
561 38100 : return id & 0xFFFFFFFF;
562 : }
563 :
564 : /* The blob id is a 64 bit number. The lower 32 bits are the page_idx. The upper
565 : * 32 bits are not currently used. Stick a 1 there just to catch bugs where the
566 : * code assumes blob id == page_idx.
567 : */
568 : static inline spdk_blob_id
569 3155 : bs_page_to_blobid(uint64_t page_idx)
570 : {
571 3155 : if (page_idx > UINT32_MAX) {
572 0 : return SPDK_BLOBID_INVALID;
573 : }
574 3155 : return SPDK_BLOB_BLOBID_HIGH_BIT | page_idx;
575 : }
576 :
577 : /* Given an io unit offset into a blob, look up the LBA for the
578 : * start of that io unit.
579 : */
580 : static inline uint64_t
581 109355 : bs_blob_io_unit_to_lba(struct spdk_blob *blob, uint64_t io_unit)
582 : {
583 : uint64_t lba;
584 : uint8_t shift;
585 109355 : uint64_t io_units_per_cluster = blob->bs->io_units_per_cluster;
586 :
587 109355 : shift = blob->bs->io_units_per_cluster_shift;
588 109355 : assert(io_unit < blob->active.num_clusters * io_units_per_cluster);
589 109355 : if (shift != 0) {
590 109355 : lba = blob->active.clusters[io_unit >> shift];
591 : } else {
592 0 : lba = blob->active.clusters[io_unit / io_units_per_cluster];
593 : }
594 109355 : if (lba == 0) {
595 5622 : return 0;
596 : } else {
597 103733 : return lba + io_unit % io_units_per_cluster;
598 : }
599 : }
600 :
601 : /* Given an io_unit offset into a blob, look up the number of io_units until the
602 : * next cluster boundary.
603 : */
604 : static inline uint32_t
605 59368 : bs_num_io_units_to_cluster_boundary(struct spdk_blob *blob, uint64_t io_unit)
606 : {
607 : uint64_t io_units_per_cluster;
608 :
609 59368 : io_units_per_cluster = bs_io_units_per_cluster(blob);
610 :
611 59368 : return io_units_per_cluster - (io_unit % io_units_per_cluster);
612 : }
613 :
614 : /* Given an io_unit offset into a blob, look up the number of io_unit into blob to beginning of current cluster */
615 : static inline uint64_t
616 1100 : bs_io_unit_to_cluster_start(struct spdk_blob *blob, uint64_t io_unit)
617 : {
618 1100 : uint64_t io_units_per_cluster = blob->bs->io_units_per_cluster;
619 :
620 1100 : return io_unit - (io_unit % io_units_per_cluster);
621 : }
622 :
623 : /* Given an io_unit offset into a blob, look up the number of pages into blob to beginning of current cluster */
624 : static inline uint32_t
625 1100 : bs_io_unit_to_cluster_number(struct spdk_blob *blob, uint64_t io_unit)
626 : {
627 1100 : uint64_t io_units_per_cluster = blob->bs->io_units_per_cluster;
628 1100 : uint8_t shift = blob->bs->io_units_per_cluster_shift;
629 :
630 1100 : if (shift != 0) {
631 1100 : return io_unit >> shift;
632 : } else {
633 0 : return io_unit / io_units_per_cluster;
634 : }
635 : }
636 :
637 : /* Given an io unit offset into a blob, look up if it is from allocated cluster. */
638 : static inline bool
639 57666 : bs_io_unit_is_allocated(struct spdk_blob *blob, uint64_t io_unit)
640 : {
641 57666 : uint64_t lba = bs_blob_io_unit_to_lba(blob, io_unit);
642 :
643 57666 : if (lba == 0) {
644 5622 : assert(spdk_blob_is_thin_provisioned(blob));
645 5622 : return false;
646 : } else {
647 52044 : return true;
648 : }
649 : }
650 :
651 : #endif
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