1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2013 Fusion IO. All rights reserved.
6 #include <linux/types.h>
7 #include "btrfs-tests.h"
9 #include "../btrfs_inode.h"
10 #include "../disk-io.h"
11 #include "../extent_io.h"
12 #include "../volumes.h"
13 #include "../compression.h"
15 static void insert_extent(struct btrfs_root *root, u64 start, u64 len,
16 u64 ram_bytes, u64 offset, u64 disk_bytenr,
17 u64 disk_len, u32 type, u8 compression, int slot)
19 struct btrfs_path path;
20 struct btrfs_file_extent_item *fi;
21 struct extent_buffer *leaf = root->node;
23 u32 value_len = sizeof(struct btrfs_file_extent_item);
25 if (type == BTRFS_FILE_EXTENT_INLINE)
27 memset(&path, 0, sizeof(path));
32 key.objectid = BTRFS_FIRST_FREE_OBJECTID;
33 key.type = BTRFS_EXTENT_DATA_KEY;
36 setup_items_for_insert(root, &path, &key, &value_len, value_len,
37 value_len + sizeof(struct btrfs_item), 1);
38 fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);
39 btrfs_set_file_extent_generation(leaf, fi, 1);
40 btrfs_set_file_extent_type(leaf, fi, type);
41 btrfs_set_file_extent_disk_bytenr(leaf, fi, disk_bytenr);
42 btrfs_set_file_extent_disk_num_bytes(leaf, fi, disk_len);
43 btrfs_set_file_extent_offset(leaf, fi, offset);
44 btrfs_set_file_extent_num_bytes(leaf, fi, len);
45 btrfs_set_file_extent_ram_bytes(leaf, fi, ram_bytes);
46 btrfs_set_file_extent_compression(leaf, fi, compression);
47 btrfs_set_file_extent_encryption(leaf, fi, 0);
48 btrfs_set_file_extent_other_encoding(leaf, fi, 0);
51 static void insert_inode_item_key(struct btrfs_root *root)
53 struct btrfs_path path;
54 struct extent_buffer *leaf = root->node;
58 memset(&path, 0, sizeof(path));
63 key.objectid = BTRFS_INODE_ITEM_KEY;
64 key.type = BTRFS_INODE_ITEM_KEY;
67 setup_items_for_insert(root, &path, &key, &value_len, value_len,
68 value_len + sizeof(struct btrfs_item), 1);
72 * Build the most complicated map of extents the earth has ever seen. We want
73 * this so we can test all of the corner cases of btrfs_get_extent. Here is a
74 * diagram of how the extents will look though this may not be possible we still
75 * want to make sure everything acts normally (the last number is not inclusive)
77 * [0 - 5][5 - 6][ 6 - 4096 ][ 4096 - 4100][4100 - 8195][8195 - 12291]
78 * [hole ][inline][hole but no extent][ hole ][ regular ][regular1 split]
80 * [12291 - 16387][16387 - 24579][24579 - 28675][ 28675 - 32771][32771 - 36867 ]
81 * [ hole ][regular1 split][ prealloc ][ prealloc1 ][prealloc1 written]
83 * [36867 - 45059][45059 - 53251][53251 - 57347][57347 - 61443][61443- 69635]
84 * [ prealloc1 ][ compressed ][ compressed1 ][ regular ][ compressed1]
86 * [69635-73731][ 73731 - 86019 ][86019-90115]
87 * [ regular ][ hole but no extent][ regular ]
89 static void setup_file_extents(struct btrfs_root *root, u32 sectorsize)
92 u64 disk_bytenr = SZ_1M;
95 /* First we want a hole */
96 insert_extent(root, offset, 5, 5, 0, 0, 0, BTRFS_FILE_EXTENT_REG, 0,
102 * Now we want an inline extent, I don't think this is possible but hey
103 * why not? Also keep in mind if we have an inline extent it counts as
104 * the whole first page. If we were to expand it we would have to cow
105 * and we wouldn't have an inline extent anymore.
107 insert_extent(root, offset, 1, 1, 0, 0, 0, BTRFS_FILE_EXTENT_INLINE, 0,
112 /* Now another hole */
113 insert_extent(root, offset, 4, 4, 0, 0, 0, BTRFS_FILE_EXTENT_REG, 0,
118 /* Now for a regular extent */
119 insert_extent(root, offset, sectorsize - 1, sectorsize - 1, 0,
120 disk_bytenr, sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
122 disk_bytenr += sectorsize;
123 offset += sectorsize - 1;
126 * Now for 3 extents that were split from a hole punch so we test
129 insert_extent(root, offset, sectorsize, 4 * sectorsize, 0, disk_bytenr,
130 4 * sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
132 offset += sectorsize;
133 insert_extent(root, offset, sectorsize, sectorsize, 0, 0, 0,
134 BTRFS_FILE_EXTENT_REG, 0, slot);
136 offset += sectorsize;
137 insert_extent(root, offset, 2 * sectorsize, 4 * sectorsize,
138 2 * sectorsize, disk_bytenr, 4 * sectorsize,
139 BTRFS_FILE_EXTENT_REG, 0, slot);
141 offset += 2 * sectorsize;
142 disk_bytenr += 4 * sectorsize;
144 /* Now for a unwritten prealloc extent */
145 insert_extent(root, offset, sectorsize, sectorsize, 0, disk_bytenr,
146 sectorsize, BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
148 offset += sectorsize;
151 * We want to jack up disk_bytenr a little more so the em stuff doesn't
154 disk_bytenr += 2 * sectorsize;
157 * Now for a partially written prealloc extent, basically the same as
158 * the hole punch example above. Ram_bytes never changes when you mark
159 * extents written btw.
161 insert_extent(root, offset, sectorsize, 4 * sectorsize, 0, disk_bytenr,
162 4 * sectorsize, BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
164 offset += sectorsize;
165 insert_extent(root, offset, sectorsize, 4 * sectorsize, sectorsize,
166 disk_bytenr, 4 * sectorsize, BTRFS_FILE_EXTENT_REG, 0,
169 offset += sectorsize;
170 insert_extent(root, offset, 2 * sectorsize, 4 * sectorsize,
171 2 * sectorsize, disk_bytenr, 4 * sectorsize,
172 BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
174 offset += 2 * sectorsize;
175 disk_bytenr += 4 * sectorsize;
177 /* Now a normal compressed extent */
178 insert_extent(root, offset, 2 * sectorsize, 2 * sectorsize, 0,
179 disk_bytenr, sectorsize, BTRFS_FILE_EXTENT_REG,
180 BTRFS_COMPRESS_ZLIB, slot);
182 offset += 2 * sectorsize;
184 disk_bytenr += 2 * sectorsize;
186 /* Now a split compressed extent */
187 insert_extent(root, offset, sectorsize, 4 * sectorsize, 0, disk_bytenr,
188 sectorsize, BTRFS_FILE_EXTENT_REG,
189 BTRFS_COMPRESS_ZLIB, slot);
191 offset += sectorsize;
192 insert_extent(root, offset, sectorsize, sectorsize, 0,
193 disk_bytenr + sectorsize, sectorsize,
194 BTRFS_FILE_EXTENT_REG, 0, slot);
196 offset += sectorsize;
197 insert_extent(root, offset, 2 * sectorsize, 4 * sectorsize,
198 2 * sectorsize, disk_bytenr, sectorsize,
199 BTRFS_FILE_EXTENT_REG, BTRFS_COMPRESS_ZLIB, slot);
201 offset += 2 * sectorsize;
202 disk_bytenr += 2 * sectorsize;
204 /* Now extents that have a hole but no hole extent */
205 insert_extent(root, offset, sectorsize, sectorsize, 0, disk_bytenr,
206 sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
208 offset += 4 * sectorsize;
209 disk_bytenr += sectorsize;
210 insert_extent(root, offset, sectorsize, sectorsize, 0, disk_bytenr,
211 sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
214 static unsigned long prealloc_only = 0;
215 static unsigned long compressed_only = 0;
216 static unsigned long vacancy_only = 0;
218 static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
220 struct btrfs_fs_info *fs_info = NULL;
221 struct inode *inode = NULL;
222 struct btrfs_root *root = NULL;
223 struct extent_map *em = NULL;
229 inode = btrfs_new_test_inode();
231 test_err("couldn't allocate inode");
235 BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
236 BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
237 BTRFS_I(inode)->location.offset = 0;
239 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
241 test_err("couldn't allocate dummy fs info");
245 root = btrfs_alloc_dummy_root(fs_info);
247 test_err("couldn't allocate root");
251 root->node = alloc_dummy_extent_buffer(fs_info, nodesize);
253 test_err("couldn't allocate dummy buffer");
257 btrfs_set_header_nritems(root->node, 0);
258 btrfs_set_header_level(root->node, 0);
261 /* First with no extents */
262 BTRFS_I(inode)->root = root;
263 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, sectorsize, 0);
266 test_err("got an error when we shouldn't have");
269 if (em->block_start != EXTENT_MAP_HOLE) {
270 test_err("expected a hole, got %llu", em->block_start);
274 btrfs_drop_extent_cache(BTRFS_I(inode), 0, (u64)-1, 0);
277 * All of the magic numbers are based on the mapping setup in
278 * setup_file_extents, so if you change anything there you need to
279 * update the comment and update the expected values below.
281 setup_file_extents(root, sectorsize);
283 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, (u64)-1, 0);
285 test_err("got an error when we shouldn't have");
288 if (em->block_start != EXTENT_MAP_HOLE) {
289 test_err("expected a hole, got %llu", em->block_start);
292 if (em->start != 0 || em->len != 5) {
294 "unexpected extent wanted start 0 len 5, got start %llu len %llu",
298 if (em->flags != 0) {
299 test_err("unexpected flags set, want 0 have %lu", em->flags);
302 offset = em->start + em->len;
305 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
307 test_err("got an error when we shouldn't have");
310 if (em->block_start != EXTENT_MAP_INLINE) {
311 test_err("expected an inline, got %llu", em->block_start);
315 if (em->start != offset || em->len != (sectorsize - 5)) {
317 "unexpected extent wanted start %llu len 1, got start %llu len %llu",
318 offset, em->start, em->len);
321 if (em->flags != 0) {
322 test_err("unexpected flags set, want 0 have %lu", em->flags);
326 * We don't test anything else for inline since it doesn't get set
327 * unless we have a page for it to write into. Maybe we should change
330 offset = em->start + em->len;
333 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
335 test_err("got an error when we shouldn't have");
338 if (em->block_start != EXTENT_MAP_HOLE) {
339 test_err("expected a hole, got %llu", em->block_start);
342 if (em->start != offset || em->len != 4) {
344 "unexpected extent wanted start %llu len 4, got start %llu len %llu",
345 offset, em->start, em->len);
348 if (em->flags != 0) {
349 test_err("unexpected flags set, want 0 have %lu", em->flags);
352 offset = em->start + em->len;
356 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
358 test_err("got an error when we shouldn't have");
361 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
362 test_err("expected a real extent, got %llu", em->block_start);
365 if (em->start != offset || em->len != sectorsize - 1) {
367 "unexpected extent wanted start %llu len 4095, got start %llu len %llu",
368 offset, em->start, em->len);
371 if (em->flags != 0) {
372 test_err("unexpected flags set, want 0 have %lu", em->flags);
375 if (em->orig_start != em->start) {
376 test_err("wrong orig offset, want %llu, have %llu", em->start,
380 offset = em->start + em->len;
383 /* The next 3 are split extents */
384 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
386 test_err("got an error when we shouldn't have");
389 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
390 test_err("expected a real extent, got %llu", em->block_start);
393 if (em->start != offset || em->len != sectorsize) {
395 "unexpected extent start %llu len %u, got start %llu len %llu",
396 offset, sectorsize, em->start, em->len);
399 if (em->flags != 0) {
400 test_err("unexpected flags set, want 0 have %lu", em->flags);
403 if (em->orig_start != em->start) {
404 test_err("wrong orig offset, want %llu, have %llu", em->start,
408 disk_bytenr = em->block_start;
409 orig_start = em->start;
410 offset = em->start + em->len;
413 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
415 test_err("got an error when we shouldn't have");
418 if (em->block_start != EXTENT_MAP_HOLE) {
419 test_err("expected a hole, got %llu", em->block_start);
422 if (em->start != offset || em->len != sectorsize) {
424 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
425 offset, sectorsize, em->start, em->len);
428 if (em->flags != 0) {
429 test_err("unexpected flags set, want 0 have %lu", em->flags);
432 offset = em->start + em->len;
435 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
437 test_err("got an error when we shouldn't have");
440 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
441 test_err("expected a real extent, got %llu", em->block_start);
444 if (em->start != offset || em->len != 2 * sectorsize) {
446 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
447 offset, 2 * sectorsize, em->start, em->len);
450 if (em->flags != 0) {
451 test_err("unexpected flags set, want 0 have %lu", em->flags);
454 if (em->orig_start != orig_start) {
455 test_err("wrong orig offset, want %llu, have %llu",
456 orig_start, em->orig_start);
459 disk_bytenr += (em->start - orig_start);
460 if (em->block_start != disk_bytenr) {
461 test_err("wrong block start, want %llu, have %llu",
462 disk_bytenr, em->block_start);
465 offset = em->start + em->len;
468 /* Prealloc extent */
469 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
471 test_err("got an error when we shouldn't have");
474 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
475 test_err("expected a real extent, got %llu", em->block_start);
478 if (em->start != offset || em->len != sectorsize) {
480 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
481 offset, sectorsize, em->start, em->len);
484 if (em->flags != prealloc_only) {
485 test_err("unexpected flags set, want %lu have %lu",
486 prealloc_only, em->flags);
489 if (em->orig_start != em->start) {
490 test_err("wrong orig offset, want %llu, have %llu", em->start,
494 offset = em->start + em->len;
497 /* The next 3 are a half written prealloc extent */
498 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
500 test_err("got an error when we shouldn't have");
503 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
504 test_err("expected a real extent, got %llu", em->block_start);
507 if (em->start != offset || em->len != sectorsize) {
509 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
510 offset, sectorsize, em->start, em->len);
513 if (em->flags != prealloc_only) {
514 test_err("unexpected flags set, want %lu have %lu",
515 prealloc_only, em->flags);
518 if (em->orig_start != em->start) {
519 test_err("wrong orig offset, want %llu, have %llu", em->start,
523 disk_bytenr = em->block_start;
524 orig_start = em->start;
525 offset = em->start + em->len;
528 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
530 test_err("got an error when we shouldn't have");
533 if (em->block_start >= EXTENT_MAP_HOLE) {
534 test_err("expected a real extent, got %llu", em->block_start);
537 if (em->start != offset || em->len != sectorsize) {
539 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
540 offset, sectorsize, em->start, em->len);
543 if (em->flags != 0) {
544 test_err("unexpected flags set, want 0 have %lu", em->flags);
547 if (em->orig_start != orig_start) {
548 test_err("unexpected orig offset, wanted %llu, have %llu",
549 orig_start, em->orig_start);
552 if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
553 test_err("unexpected block start, wanted %llu, have %llu",
554 disk_bytenr + (em->start - em->orig_start),
558 offset = em->start + em->len;
561 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
563 test_err("got an error when we shouldn't have");
566 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
567 test_err("expected a real extent, got %llu", em->block_start);
570 if (em->start != offset || em->len != 2 * sectorsize) {
572 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
573 offset, 2 * sectorsize, em->start, em->len);
576 if (em->flags != prealloc_only) {
577 test_err("unexpected flags set, want %lu have %lu",
578 prealloc_only, em->flags);
581 if (em->orig_start != orig_start) {
582 test_err("wrong orig offset, want %llu, have %llu", orig_start,
586 if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
587 test_err("unexpected block start, wanted %llu, have %llu",
588 disk_bytenr + (em->start - em->orig_start),
592 offset = em->start + em->len;
595 /* Now for the compressed extent */
596 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
598 test_err("got an error when we shouldn't have");
601 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
602 test_err("expected a real extent, got %llu", em->block_start);
605 if (em->start != offset || em->len != 2 * sectorsize) {
607 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
608 offset, 2 * sectorsize, em->start, em->len);
611 if (em->flags != compressed_only) {
612 test_err("unexpected flags set, want %lu have %lu",
613 compressed_only, em->flags);
616 if (em->orig_start != em->start) {
617 test_err("wrong orig offset, want %llu, have %llu",
618 em->start, em->orig_start);
621 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
622 test_err("unexpected compress type, wanted %d, got %d",
623 BTRFS_COMPRESS_ZLIB, em->compress_type);
626 offset = em->start + em->len;
629 /* Split compressed extent */
630 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
632 test_err("got an error when we shouldn't have");
635 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
636 test_err("expected a real extent, got %llu", em->block_start);
639 if (em->start != offset || em->len != sectorsize) {
641 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
642 offset, sectorsize, em->start, em->len);
645 if (em->flags != compressed_only) {
646 test_err("unexpected flags set, want %lu have %lu",
647 compressed_only, em->flags);
650 if (em->orig_start != em->start) {
651 test_err("wrong orig offset, want %llu, have %llu",
652 em->start, em->orig_start);
655 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
656 test_err("unexpected compress type, wanted %d, got %d",
657 BTRFS_COMPRESS_ZLIB, em->compress_type);
660 disk_bytenr = em->block_start;
661 orig_start = em->start;
662 offset = em->start + em->len;
665 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
667 test_err("got an error when we shouldn't have");
670 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
671 test_err("expected a real extent, got %llu", em->block_start);
674 if (em->start != offset || em->len != sectorsize) {
676 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
677 offset, sectorsize, em->start, em->len);
680 if (em->flags != 0) {
681 test_err("unexpected flags set, want 0 have %lu", em->flags);
684 if (em->orig_start != em->start) {
685 test_err("wrong orig offset, want %llu, have %llu", em->start,
689 offset = em->start + em->len;
692 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
694 test_err("got an error when we shouldn't have");
697 if (em->block_start != disk_bytenr) {
698 test_err("block start does not match, want %llu got %llu",
699 disk_bytenr, em->block_start);
702 if (em->start != offset || em->len != 2 * sectorsize) {
704 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
705 offset, 2 * sectorsize, em->start, em->len);
708 if (em->flags != compressed_only) {
709 test_err("unexpected flags set, want %lu have %lu",
710 compressed_only, em->flags);
713 if (em->orig_start != orig_start) {
714 test_err("wrong orig offset, want %llu, have %llu",
715 em->start, orig_start);
718 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
719 test_err("unexpected compress type, wanted %d, got %d",
720 BTRFS_COMPRESS_ZLIB, em->compress_type);
723 offset = em->start + em->len;
726 /* A hole between regular extents but no hole extent */
727 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset + 6,
730 test_err("got an error when we shouldn't have");
733 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
734 test_err("expected a real extent, got %llu", em->block_start);
737 if (em->start != offset || em->len != sectorsize) {
739 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
740 offset, sectorsize, em->start, em->len);
743 if (em->flags != 0) {
744 test_err("unexpected flags set, want 0 have %lu", em->flags);
747 if (em->orig_start != em->start) {
748 test_err("wrong orig offset, want %llu, have %llu", em->start,
752 offset = em->start + em->len;
755 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, SZ_4M, 0);
757 test_err("got an error when we shouldn't have");
760 if (em->block_start != EXTENT_MAP_HOLE) {
761 test_err("expected a hole extent, got %llu", em->block_start);
765 * Currently we just return a length that we requested rather than the
766 * length of the actual hole, if this changes we'll have to change this
769 if (em->start != offset || em->len != 3 * sectorsize) {
771 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
772 offset, 3 * sectorsize, em->start, em->len);
775 if (em->flags != vacancy_only) {
776 test_err("unexpected flags set, want %lu have %lu",
777 vacancy_only, em->flags);
780 if (em->orig_start != em->start) {
781 test_err("wrong orig offset, want %llu, have %llu", em->start,
785 offset = em->start + em->len;
788 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
790 test_err("got an error when we shouldn't have");
793 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
794 test_err("expected a real extent, got %llu", em->block_start);
797 if (em->start != offset || em->len != sectorsize) {
799 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
800 offset, sectorsize, em->start, em->len);
803 if (em->flags != 0) {
804 test_err("unexpected flags set, want 0 have %lu", em->flags);
807 if (em->orig_start != em->start) {
808 test_err("wrong orig offset, want %llu, have %llu", em->start,
817 btrfs_free_dummy_root(root);
818 btrfs_free_dummy_fs_info(fs_info);
822 static int test_hole_first(u32 sectorsize, u32 nodesize)
824 struct btrfs_fs_info *fs_info = NULL;
825 struct inode *inode = NULL;
826 struct btrfs_root *root = NULL;
827 struct extent_map *em = NULL;
830 inode = btrfs_new_test_inode();
832 test_err("couldn't allocate inode");
836 BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
837 BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
838 BTRFS_I(inode)->location.offset = 0;
840 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
842 test_err("couldn't allocate dummy fs info");
846 root = btrfs_alloc_dummy_root(fs_info);
848 test_err("couldn't allocate root");
852 root->node = alloc_dummy_extent_buffer(fs_info, nodesize);
854 test_err("couldn't allocate dummy buffer");
858 btrfs_set_header_nritems(root->node, 0);
859 btrfs_set_header_level(root->node, 0);
860 BTRFS_I(inode)->root = root;
864 * Need a blank inode item here just so we don't confuse
867 insert_inode_item_key(root);
868 insert_extent(root, sectorsize, sectorsize, sectorsize, 0, sectorsize,
869 sectorsize, BTRFS_FILE_EXTENT_REG, 0, 1);
870 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, 2 * sectorsize, 0);
872 test_err("got an error when we shouldn't have");
875 if (em->block_start != EXTENT_MAP_HOLE) {
876 test_err("expected a hole, got %llu", em->block_start);
879 if (em->start != 0 || em->len != sectorsize) {
881 "unexpected extent wanted start 0 len %u, got start %llu len %llu",
882 sectorsize, em->start, em->len);
885 if (em->flags != vacancy_only) {
886 test_err("wrong flags, wanted %lu, have %lu", vacancy_only,
892 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, sectorsize,
895 test_err("got an error when we shouldn't have");
898 if (em->block_start != sectorsize) {
899 test_err("expected a real extent, got %llu", em->block_start);
902 if (em->start != sectorsize || em->len != sectorsize) {
904 "unexpected extent wanted start %u len %u, got start %llu len %llu",
905 sectorsize, sectorsize, em->start, em->len);
908 if (em->flags != 0) {
909 test_err("unexpected flags set, wanted 0 got %lu",
918 btrfs_free_dummy_root(root);
919 btrfs_free_dummy_fs_info(fs_info);
923 static int test_extent_accounting(u32 sectorsize, u32 nodesize)
925 struct btrfs_fs_info *fs_info = NULL;
926 struct inode *inode = NULL;
927 struct btrfs_root *root = NULL;
930 inode = btrfs_new_test_inode();
932 test_err("couldn't allocate inode");
936 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
938 test_err("couldn't allocate dummy fs info");
942 root = btrfs_alloc_dummy_root(fs_info);
944 test_err("couldn't allocate root");
948 BTRFS_I(inode)->root = root;
949 btrfs_test_inode_set_ops(inode);
951 /* [BTRFS_MAX_EXTENT_SIZE] */
952 ret = btrfs_set_extent_delalloc(inode, 0, BTRFS_MAX_EXTENT_SIZE - 1, 0,
955 test_err("btrfs_set_extent_delalloc returned %d", ret);
958 if (BTRFS_I(inode)->outstanding_extents != 1) {
960 test_err("miscount, wanted 1, got %u",
961 BTRFS_I(inode)->outstanding_extents);
965 /* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
966 ret = btrfs_set_extent_delalloc(inode, BTRFS_MAX_EXTENT_SIZE,
967 BTRFS_MAX_EXTENT_SIZE + sectorsize - 1,
970 test_err("btrfs_set_extent_delalloc returned %d", ret);
973 if (BTRFS_I(inode)->outstanding_extents != 2) {
975 test_err("miscount, wanted 2, got %u",
976 BTRFS_I(inode)->outstanding_extents);
980 /* [BTRFS_MAX_EXTENT_SIZE/2][sectorsize HOLE][the rest] */
981 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
982 BTRFS_MAX_EXTENT_SIZE >> 1,
983 (BTRFS_MAX_EXTENT_SIZE >> 1) + sectorsize - 1,
984 EXTENT_DELALLOC | EXTENT_DIRTY |
985 EXTENT_UPTODATE, 0, 0, NULL);
987 test_err("clear_extent_bit returned %d", ret);
990 if (BTRFS_I(inode)->outstanding_extents != 2) {
992 test_err("miscount, wanted 2, got %u",
993 BTRFS_I(inode)->outstanding_extents);
997 /* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
998 ret = btrfs_set_extent_delalloc(inode, BTRFS_MAX_EXTENT_SIZE >> 1,
999 (BTRFS_MAX_EXTENT_SIZE >> 1)
1003 test_err("btrfs_set_extent_delalloc returned %d", ret);
1006 if (BTRFS_I(inode)->outstanding_extents != 2) {
1008 test_err("miscount, wanted 2, got %u",
1009 BTRFS_I(inode)->outstanding_extents);
1014 * [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize HOLE][BTRFS_MAX_EXTENT_SIZE+sectorsize]
1016 ret = btrfs_set_extent_delalloc(inode,
1017 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize,
1018 (BTRFS_MAX_EXTENT_SIZE << 1) + 3 * sectorsize - 1,
1021 test_err("btrfs_set_extent_delalloc returned %d", ret);
1024 if (BTRFS_I(inode)->outstanding_extents != 4) {
1026 test_err("miscount, wanted 4, got %u",
1027 BTRFS_I(inode)->outstanding_extents);
1032 * [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize][BTRFS_MAX_EXTENT_SIZE+sectorsize]
1034 ret = btrfs_set_extent_delalloc(inode,
1035 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1036 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, 0, NULL, 0);
1038 test_err("btrfs_set_extent_delalloc returned %d", ret);
1041 if (BTRFS_I(inode)->outstanding_extents != 3) {
1043 test_err("miscount, wanted 3, got %u",
1044 BTRFS_I(inode)->outstanding_extents);
1048 /* [BTRFS_MAX_EXTENT_SIZE+4k][4K HOLE][BTRFS_MAX_EXTENT_SIZE+4k] */
1049 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
1050 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1051 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1,
1052 EXTENT_DIRTY | EXTENT_DELALLOC |
1053 EXTENT_UPTODATE, 0, 0, NULL);
1055 test_err("clear_extent_bit returned %d", ret);
1058 if (BTRFS_I(inode)->outstanding_extents != 4) {
1060 test_err("miscount, wanted 4, got %u",
1061 BTRFS_I(inode)->outstanding_extents);
1066 * Refill the hole again just for good measure, because I thought it
1067 * might fail and I'd rather satisfy my paranoia at this point.
1069 ret = btrfs_set_extent_delalloc(inode,
1070 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1071 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, 0, NULL, 0);
1073 test_err("btrfs_set_extent_delalloc returned %d", ret);
1076 if (BTRFS_I(inode)->outstanding_extents != 3) {
1078 test_err("miscount, wanted 3, got %u",
1079 BTRFS_I(inode)->outstanding_extents);
1084 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
1085 EXTENT_DIRTY | EXTENT_DELALLOC |
1086 EXTENT_UPTODATE, 0, 0, NULL);
1088 test_err("clear_extent_bit returned %d", ret);
1091 if (BTRFS_I(inode)->outstanding_extents) {
1093 test_err("miscount, wanted 0, got %u",
1094 BTRFS_I(inode)->outstanding_extents);
1100 clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
1101 EXTENT_DIRTY | EXTENT_DELALLOC |
1102 EXTENT_UPTODATE, 0, 0, NULL);
1104 btrfs_free_dummy_root(root);
1105 btrfs_free_dummy_fs_info(fs_info);
1109 int btrfs_test_inodes(u32 sectorsize, u32 nodesize)
1113 set_bit(EXTENT_FLAG_COMPRESSED, &compressed_only);
1114 set_bit(EXTENT_FLAG_PREALLOC, &prealloc_only);
1116 test_msg("running btrfs_get_extent tests");
1117 ret = test_btrfs_get_extent(sectorsize, nodesize);
1120 test_msg("running hole first btrfs_get_extent test");
1121 ret = test_hole_first(sectorsize, nodesize);
1124 test_msg("running outstanding_extents tests");
1125 return test_extent_accounting(sectorsize, nodesize);