2 * Copyright (C) 2013 Fusion IO. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
19 #include <linux/types.h>
20 #include "btrfs-tests.h"
22 #include "../btrfs_inode.h"
23 #include "../disk-io.h"
24 #include "../extent_io.h"
25 #include "../volumes.h"
26 #include "../compression.h"
28 static void insert_extent(struct btrfs_root *root, u64 start, u64 len,
29 u64 ram_bytes, u64 offset, u64 disk_bytenr,
30 u64 disk_len, u32 type, u8 compression, int slot)
32 struct btrfs_path path;
33 struct btrfs_file_extent_item *fi;
34 struct extent_buffer *leaf = root->node;
36 u32 value_len = sizeof(struct btrfs_file_extent_item);
38 if (type == BTRFS_FILE_EXTENT_INLINE)
40 memset(&path, 0, sizeof(path));
45 key.objectid = BTRFS_FIRST_FREE_OBJECTID;
46 key.type = BTRFS_EXTENT_DATA_KEY;
49 setup_items_for_insert(root, &path, &key, &value_len, value_len,
50 value_len + sizeof(struct btrfs_item), 1);
51 fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);
52 btrfs_set_file_extent_generation(leaf, fi, 1);
53 btrfs_set_file_extent_type(leaf, fi, type);
54 btrfs_set_file_extent_disk_bytenr(leaf, fi, disk_bytenr);
55 btrfs_set_file_extent_disk_num_bytes(leaf, fi, disk_len);
56 btrfs_set_file_extent_offset(leaf, fi, offset);
57 btrfs_set_file_extent_num_bytes(leaf, fi, len);
58 btrfs_set_file_extent_ram_bytes(leaf, fi, ram_bytes);
59 btrfs_set_file_extent_compression(leaf, fi, compression);
60 btrfs_set_file_extent_encryption(leaf, fi, 0);
61 btrfs_set_file_extent_other_encoding(leaf, fi, 0);
64 static void insert_inode_item_key(struct btrfs_root *root)
66 struct btrfs_path path;
67 struct extent_buffer *leaf = root->node;
71 memset(&path, 0, sizeof(path));
76 key.objectid = BTRFS_INODE_ITEM_KEY;
77 key.type = BTRFS_INODE_ITEM_KEY;
80 setup_items_for_insert(root, &path, &key, &value_len, value_len,
81 value_len + sizeof(struct btrfs_item), 1);
85 * Build the most complicated map of extents the earth has ever seen. We want
86 * this so we can test all of the corner cases of btrfs_get_extent. Here is a
87 * diagram of how the extents will look though this may not be possible we still
88 * want to make sure everything acts normally (the last number is not inclusive)
90 * [0 - 5][5 - 6][ 6 - 4096 ][ 4096 - 4100][4100 - 8195][8195 - 12291]
91 * [hole ][inline][hole but no extent][ hole ][ regular ][regular1 split]
93 * [12291 - 16387][16387 - 24579][24579 - 28675][ 28675 - 32771][32771 - 36867 ]
94 * [ hole ][regular1 split][ prealloc ][ prealloc1 ][prealloc1 written]
96 * [36867 - 45059][45059 - 53251][53251 - 57347][57347 - 61443][61443- 69635]
97 * [ prealloc1 ][ compressed ][ compressed1 ][ regular ][ compressed1]
99 * [69635-73731][ 73731 - 86019 ][86019-90115]
100 * [ regular ][ hole but no extent][ regular ]
102 static void setup_file_extents(struct btrfs_root *root, u32 sectorsize)
105 u64 disk_bytenr = SZ_1M;
108 /* First we want a hole */
109 insert_extent(root, offset, 5, 5, 0, 0, 0, BTRFS_FILE_EXTENT_REG, 0,
115 * Now we want an inline extent, I don't think this is possible but hey
116 * why not? Also keep in mind if we have an inline extent it counts as
117 * the whole first page. If we were to expand it we would have to cow
118 * and we wouldn't have an inline extent anymore.
120 insert_extent(root, offset, 1, 1, 0, 0, 0, BTRFS_FILE_EXTENT_INLINE, 0,
125 /* Now another hole */
126 insert_extent(root, offset, 4, 4, 0, 0, 0, BTRFS_FILE_EXTENT_REG, 0,
131 /* Now for a regular extent */
132 insert_extent(root, offset, sectorsize - 1, sectorsize - 1, 0,
133 disk_bytenr, sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
135 disk_bytenr += sectorsize;
136 offset += sectorsize - 1;
139 * Now for 3 extents that were split from a hole punch so we test
142 insert_extent(root, offset, sectorsize, 4 * sectorsize, 0, disk_bytenr,
143 4 * sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
145 offset += sectorsize;
146 insert_extent(root, offset, sectorsize, sectorsize, 0, 0, 0,
147 BTRFS_FILE_EXTENT_REG, 0, slot);
149 offset += sectorsize;
150 insert_extent(root, offset, 2 * sectorsize, 4 * sectorsize,
151 2 * sectorsize, disk_bytenr, 4 * sectorsize,
152 BTRFS_FILE_EXTENT_REG, 0, slot);
154 offset += 2 * sectorsize;
155 disk_bytenr += 4 * sectorsize;
157 /* Now for a unwritten prealloc extent */
158 insert_extent(root, offset, sectorsize, sectorsize, 0, disk_bytenr,
159 sectorsize, BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
161 offset += sectorsize;
164 * We want to jack up disk_bytenr a little more so the em stuff doesn't
167 disk_bytenr += 2 * sectorsize;
170 * Now for a partially written prealloc extent, basically the same as
171 * the hole punch example above. Ram_bytes never changes when you mark
172 * extents written btw.
174 insert_extent(root, offset, sectorsize, 4 * sectorsize, 0, disk_bytenr,
175 4 * sectorsize, BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
177 offset += sectorsize;
178 insert_extent(root, offset, sectorsize, 4 * sectorsize, sectorsize,
179 disk_bytenr, 4 * sectorsize, BTRFS_FILE_EXTENT_REG, 0,
182 offset += sectorsize;
183 insert_extent(root, offset, 2 * sectorsize, 4 * sectorsize,
184 2 * sectorsize, disk_bytenr, 4 * sectorsize,
185 BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
187 offset += 2 * sectorsize;
188 disk_bytenr += 4 * sectorsize;
190 /* Now a normal compressed extent */
191 insert_extent(root, offset, 2 * sectorsize, 2 * sectorsize, 0,
192 disk_bytenr, sectorsize, BTRFS_FILE_EXTENT_REG,
193 BTRFS_COMPRESS_ZLIB, slot);
195 offset += 2 * sectorsize;
197 disk_bytenr += 2 * sectorsize;
199 /* Now a split compressed extent */
200 insert_extent(root, offset, sectorsize, 4 * sectorsize, 0, disk_bytenr,
201 sectorsize, BTRFS_FILE_EXTENT_REG,
202 BTRFS_COMPRESS_ZLIB, slot);
204 offset += sectorsize;
205 insert_extent(root, offset, sectorsize, sectorsize, 0,
206 disk_bytenr + sectorsize, sectorsize,
207 BTRFS_FILE_EXTENT_REG, 0, slot);
209 offset += sectorsize;
210 insert_extent(root, offset, 2 * sectorsize, 4 * sectorsize,
211 2 * sectorsize, disk_bytenr, sectorsize,
212 BTRFS_FILE_EXTENT_REG, BTRFS_COMPRESS_ZLIB, slot);
214 offset += 2 * sectorsize;
215 disk_bytenr += 2 * sectorsize;
217 /* Now extents that have a hole but no hole extent */
218 insert_extent(root, offset, sectorsize, sectorsize, 0, disk_bytenr,
219 sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
221 offset += 4 * sectorsize;
222 disk_bytenr += sectorsize;
223 insert_extent(root, offset, sectorsize, sectorsize, 0, disk_bytenr,
224 sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
227 static unsigned long prealloc_only = 0;
228 static unsigned long compressed_only = 0;
229 static unsigned long vacancy_only = 0;
231 static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
233 struct inode *inode = NULL;
234 struct btrfs_root *root = NULL;
235 struct extent_map *em = NULL;
241 inode = btrfs_new_test_inode();
243 test_msg("Couldn't allocate inode\n");
247 BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
248 BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
249 BTRFS_I(inode)->location.offset = 0;
251 root = btrfs_alloc_dummy_root(sectorsize, nodesize);
253 test_msg("Couldn't allocate root\n");
258 * We do this since btrfs_get_extent wants to assign em->bdev to
259 * root->fs_info->fs_devices->latest_bdev.
261 root->fs_info = btrfs_alloc_dummy_fs_info();
262 if (!root->fs_info) {
263 test_msg("Couldn't allocate dummy fs info\n");
267 root->node = alloc_dummy_extent_buffer(NULL, nodesize, nodesize);
269 test_msg("Couldn't allocate dummy buffer\n");
274 * We will just free a dummy node if it's ref count is 2 so we need an
275 * extra ref so our searches don't accidentally release our page.
277 extent_buffer_get(root->node);
278 btrfs_set_header_nritems(root->node, 0);
279 btrfs_set_header_level(root->node, 0);
282 /* First with no extents */
283 BTRFS_I(inode)->root = root;
284 em = btrfs_get_extent(inode, NULL, 0, 0, sectorsize, 0);
287 test_msg("Got an error when we shouldn't have\n");
290 if (em->block_start != EXTENT_MAP_HOLE) {
291 test_msg("Expected a hole, got %llu\n", em->block_start);
294 if (!test_bit(EXTENT_FLAG_VACANCY, &em->flags)) {
295 test_msg("Vacancy flag wasn't set properly\n");
299 btrfs_drop_extent_cache(inode, 0, (u64)-1, 0);
302 * All of the magic numbers are based on the mapping setup in
303 * setup_file_extents, so if you change anything there you need to
304 * update the comment and update the expected values below.
306 setup_file_extents(root, sectorsize);
308 em = btrfs_get_extent(inode, NULL, 0, 0, (u64)-1, 0);
310 test_msg("Got an error when we shouldn't have\n");
313 if (em->block_start != EXTENT_MAP_HOLE) {
314 test_msg("Expected a hole, got %llu\n", em->block_start);
317 if (em->start != 0 || em->len != 5) {
318 test_msg("Unexpected extent wanted start 0 len 5, got start "
319 "%llu len %llu\n", em->start, em->len);
322 if (em->flags != 0) {
323 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
326 offset = em->start + em->len;
329 em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
331 test_msg("Got an error when we shouldn't have\n");
334 if (em->block_start != EXTENT_MAP_INLINE) {
335 test_msg("Expected an inline, got %llu\n", em->block_start);
339 if (em->start != offset || em->len != (sectorsize - 5)) {
340 test_msg("Unexpected extent wanted start %llu len 1, got start "
341 "%llu len %llu\n", offset, em->start, em->len);
344 if (em->flags != 0) {
345 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
349 * We don't test anything else for inline since it doesn't get set
350 * unless we have a page for it to write into. Maybe we should change
353 offset = em->start + em->len;
356 em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
358 test_msg("Got an error when we shouldn't have\n");
361 if (em->block_start != EXTENT_MAP_HOLE) {
362 test_msg("Expected a hole, got %llu\n", em->block_start);
365 if (em->start != offset || em->len != 4) {
366 test_msg("Unexpected extent wanted start %llu len 4, got start "
367 "%llu len %llu\n", offset, em->start, em->len);
370 if (em->flags != 0) {
371 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
374 offset = em->start + em->len;
378 em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
380 test_msg("Got an error when we shouldn't have\n");
383 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
384 test_msg("Expected a real extent, got %llu\n", em->block_start);
387 if (em->start != offset || em->len != sectorsize - 1) {
388 test_msg("Unexpected extent wanted start %llu len 4095, got "
389 "start %llu len %llu\n", offset, em->start, em->len);
392 if (em->flags != 0) {
393 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
396 if (em->orig_start != em->start) {
397 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
401 offset = em->start + em->len;
404 /* The next 3 are split extents */
405 em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
407 test_msg("Got an error when we shouldn't have\n");
410 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
411 test_msg("Expected a real extent, got %llu\n", em->block_start);
414 if (em->start != offset || em->len != sectorsize) {
415 test_msg("Unexpected extent start %llu len %u, "
416 "got start %llu len %llu\n",
417 offset, sectorsize, em->start, em->len);
420 if (em->flags != 0) {
421 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
424 if (em->orig_start != em->start) {
425 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
429 disk_bytenr = em->block_start;
430 orig_start = em->start;
431 offset = em->start + em->len;
434 em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
436 test_msg("Got an error when we shouldn't have\n");
439 if (em->block_start != EXTENT_MAP_HOLE) {
440 test_msg("Expected a hole, got %llu\n", em->block_start);
443 if (em->start != offset || em->len != sectorsize) {
444 test_msg("Unexpected extent wanted start %llu len %u, "
445 "got start %llu len %llu\n",
446 offset, sectorsize, em->start, em->len);
449 if (em->flags != 0) {
450 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
453 offset = em->start + em->len;
456 em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
458 test_msg("Got an error when we shouldn't have\n");
461 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
462 test_msg("Expected a real extent, got %llu\n", em->block_start);
465 if (em->start != offset || em->len != 2 * sectorsize) {
466 test_msg("Unexpected extent wanted start %llu len %u, "
467 "got start %llu len %llu\n",
468 offset, 2 * sectorsize, em->start, em->len);
471 if (em->flags != 0) {
472 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
475 if (em->orig_start != orig_start) {
476 test_msg("Wrong orig offset, want %llu, have %llu\n",
477 orig_start, em->orig_start);
480 disk_bytenr += (em->start - orig_start);
481 if (em->block_start != disk_bytenr) {
482 test_msg("Wrong block start, want %llu, have %llu\n",
483 disk_bytenr, em->block_start);
486 offset = em->start + em->len;
489 /* Prealloc extent */
490 em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
492 test_msg("Got an error when we shouldn't have\n");
495 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
496 test_msg("Expected a real extent, got %llu\n", em->block_start);
499 if (em->start != offset || em->len != sectorsize) {
500 test_msg("Unexpected extent wanted start %llu len %u, "
501 "got start %llu len %llu\n",
502 offset, sectorsize, em->start, em->len);
505 if (em->flags != prealloc_only) {
506 test_msg("Unexpected flags set, want %lu have %lu\n",
507 prealloc_only, em->flags);
510 if (em->orig_start != em->start) {
511 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
515 offset = em->start + em->len;
518 /* The next 3 are a half written prealloc extent */
519 em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
521 test_msg("Got an error when we shouldn't have\n");
524 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
525 test_msg("Expected a real extent, got %llu\n", em->block_start);
528 if (em->start != offset || em->len != sectorsize) {
529 test_msg("Unexpected extent wanted start %llu len %u, "
530 "got start %llu len %llu\n",
531 offset, sectorsize, em->start, em->len);
534 if (em->flags != prealloc_only) {
535 test_msg("Unexpected flags set, want %lu have %lu\n",
536 prealloc_only, em->flags);
539 if (em->orig_start != em->start) {
540 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
544 disk_bytenr = em->block_start;
545 orig_start = em->start;
546 offset = em->start + em->len;
549 em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
551 test_msg("Got an error when we shouldn't have\n");
554 if (em->block_start >= EXTENT_MAP_HOLE) {
555 test_msg("Expected a real extent, got %llu\n", em->block_start);
558 if (em->start != offset || em->len != sectorsize) {
559 test_msg("Unexpected extent wanted start %llu len %u, "
560 "got start %llu len %llu\n",
561 offset, sectorsize, em->start, em->len);
564 if (em->flags != 0) {
565 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
568 if (em->orig_start != orig_start) {
569 test_msg("Unexpected orig offset, wanted %llu, have %llu\n",
570 orig_start, em->orig_start);
573 if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
574 test_msg("Unexpected block start, wanted %llu, have %llu\n",
575 disk_bytenr + (em->start - em->orig_start),
579 offset = em->start + em->len;
582 em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
584 test_msg("Got an error when we shouldn't have\n");
587 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
588 test_msg("Expected a real extent, got %llu\n", em->block_start);
591 if (em->start != offset || em->len != 2 * sectorsize) {
592 test_msg("Unexpected extent wanted start %llu len %u, "
593 "got start %llu len %llu\n",
594 offset, 2 * sectorsize, em->start, em->len);
597 if (em->flags != prealloc_only) {
598 test_msg("Unexpected flags set, want %lu have %lu\n",
599 prealloc_only, em->flags);
602 if (em->orig_start != orig_start) {
603 test_msg("Wrong orig offset, want %llu, have %llu\n", orig_start,
607 if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
608 test_msg("Unexpected block start, wanted %llu, have %llu\n",
609 disk_bytenr + (em->start - em->orig_start),
613 offset = em->start + em->len;
616 /* Now for the compressed extent */
617 em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
619 test_msg("Got an error when we shouldn't have\n");
622 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
623 test_msg("Expected a real extent, got %llu\n", em->block_start);
626 if (em->start != offset || em->len != 2 * sectorsize) {
627 test_msg("Unexpected extent wanted start %llu len %u,"
628 "got start %llu len %llu\n",
629 offset, 2 * sectorsize, em->start, em->len);
632 if (em->flags != compressed_only) {
633 test_msg("Unexpected flags set, want %lu have %lu\n",
634 compressed_only, em->flags);
637 if (em->orig_start != em->start) {
638 test_msg("Wrong orig offset, want %llu, have %llu\n",
639 em->start, em->orig_start);
642 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
643 test_msg("Unexpected compress type, wanted %d, got %d\n",
644 BTRFS_COMPRESS_ZLIB, em->compress_type);
647 offset = em->start + em->len;
650 /* Split compressed extent */
651 em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
653 test_msg("Got an error when we shouldn't have\n");
656 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
657 test_msg("Expected a real extent, got %llu\n", em->block_start);
660 if (em->start != offset || em->len != sectorsize) {
661 test_msg("Unexpected extent wanted start %llu len %u,"
662 "got start %llu len %llu\n",
663 offset, sectorsize, em->start, em->len);
666 if (em->flags != compressed_only) {
667 test_msg("Unexpected flags set, want %lu have %lu\n",
668 compressed_only, em->flags);
671 if (em->orig_start != em->start) {
672 test_msg("Wrong orig offset, want %llu, have %llu\n",
673 em->start, em->orig_start);
676 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
677 test_msg("Unexpected compress type, wanted %d, got %d\n",
678 BTRFS_COMPRESS_ZLIB, em->compress_type);
681 disk_bytenr = em->block_start;
682 orig_start = em->start;
683 offset = em->start + em->len;
686 em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
688 test_msg("Got an error when we shouldn't have\n");
691 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
692 test_msg("Expected a real extent, got %llu\n", em->block_start);
695 if (em->start != offset || em->len != sectorsize) {
696 test_msg("Unexpected extent wanted start %llu len %u, "
697 "got start %llu len %llu\n",
698 offset, sectorsize, em->start, em->len);
701 if (em->flags != 0) {
702 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
705 if (em->orig_start != em->start) {
706 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
710 offset = em->start + em->len;
713 em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
715 test_msg("Got an error when we shouldn't have\n");
718 if (em->block_start != disk_bytenr) {
719 test_msg("Block start does not match, want %llu got %llu\n",
720 disk_bytenr, em->block_start);
723 if (em->start != offset || em->len != 2 * sectorsize) {
724 test_msg("Unexpected extent wanted start %llu len %u, "
725 "got start %llu len %llu\n",
726 offset, 2 * sectorsize, em->start, em->len);
729 if (em->flags != compressed_only) {
730 test_msg("Unexpected flags set, want %lu have %lu\n",
731 compressed_only, em->flags);
734 if (em->orig_start != orig_start) {
735 test_msg("Wrong orig offset, want %llu, have %llu\n",
736 em->start, orig_start);
739 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
740 test_msg("Unexpected compress type, wanted %d, got %d\n",
741 BTRFS_COMPRESS_ZLIB, em->compress_type);
744 offset = em->start + em->len;
747 /* A hole between regular extents but no hole extent */
748 em = btrfs_get_extent(inode, NULL, 0, offset + 6, sectorsize, 0);
750 test_msg("Got an error when we shouldn't have\n");
753 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
754 test_msg("Expected a real extent, got %llu\n", em->block_start);
757 if (em->start != offset || em->len != sectorsize) {
758 test_msg("Unexpected extent wanted start %llu len %u, "
759 "got start %llu len %llu\n",
760 offset, sectorsize, em->start, em->len);
763 if (em->flags != 0) {
764 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
767 if (em->orig_start != em->start) {
768 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
772 offset = em->start + em->len;
775 em = btrfs_get_extent(inode, NULL, 0, offset, 4096 * 1024, 0);
777 test_msg("Got an error when we shouldn't have\n");
780 if (em->block_start != EXTENT_MAP_HOLE) {
781 test_msg("Expected a hole extent, got %llu\n", em->block_start);
785 * Currently we just return a length that we requested rather than the
786 * length of the actual hole, if this changes we'll have to change this
789 if (em->start != offset || em->len != 3 * sectorsize) {
790 test_msg("Unexpected extent wanted start %llu len %u, "
791 "got start %llu len %llu\n",
792 offset, 3 * sectorsize, em->start, em->len);
795 if (em->flags != vacancy_only) {
796 test_msg("Unexpected flags set, want %lu have %lu\n",
797 vacancy_only, em->flags);
800 if (em->orig_start != em->start) {
801 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
805 offset = em->start + em->len;
808 em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
810 test_msg("Got an error when we shouldn't have\n");
813 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
814 test_msg("Expected a real extent, got %llu\n", em->block_start);
817 if (em->start != offset || em->len != sectorsize) {
818 test_msg("Unexpected extent wanted start %llu len %u,"
819 "got start %llu len %llu\n",
820 offset, sectorsize, em->start, em->len);
823 if (em->flags != 0) {
824 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
827 if (em->orig_start != em->start) {
828 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
837 btrfs_free_dummy_root(root);
841 static int test_hole_first(u32 sectorsize, u32 nodesize)
843 struct inode *inode = NULL;
844 struct btrfs_root *root = NULL;
845 struct extent_map *em = NULL;
848 inode = btrfs_new_test_inode();
850 test_msg("Couldn't allocate inode\n");
854 BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
855 BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
856 BTRFS_I(inode)->location.offset = 0;
858 root = btrfs_alloc_dummy_root(sectorsize, nodesize);
860 test_msg("Couldn't allocate root\n");
864 root->fs_info = btrfs_alloc_dummy_fs_info();
865 if (!root->fs_info) {
866 test_msg("Couldn't allocate dummy fs info\n");
870 root->node = alloc_dummy_extent_buffer(NULL, nodesize, nodesize);
872 test_msg("Couldn't allocate dummy buffer\n");
876 extent_buffer_get(root->node);
877 btrfs_set_header_nritems(root->node, 0);
878 btrfs_set_header_level(root->node, 0);
879 BTRFS_I(inode)->root = root;
883 * Need a blank inode item here just so we don't confuse
886 insert_inode_item_key(root);
887 insert_extent(root, sectorsize, sectorsize, sectorsize, 0, sectorsize,
888 sectorsize, BTRFS_FILE_EXTENT_REG, 0, 1);
889 em = btrfs_get_extent(inode, NULL, 0, 0, 2 * sectorsize, 0);
891 test_msg("Got an error when we shouldn't have\n");
894 if (em->block_start != EXTENT_MAP_HOLE) {
895 test_msg("Expected a hole, got %llu\n", em->block_start);
898 if (em->start != 0 || em->len != sectorsize) {
899 test_msg("Unexpected extent wanted start 0 len %u, "
900 "got start %llu len %llu\n",
901 sectorsize, em->start, em->len);
904 if (em->flags != vacancy_only) {
905 test_msg("Wrong flags, wanted %lu, have %lu\n", vacancy_only,
911 em = btrfs_get_extent(inode, NULL, 0, sectorsize, 2 * sectorsize, 0);
913 test_msg("Got an error when we shouldn't have\n");
916 if (em->block_start != sectorsize) {
917 test_msg("Expected a real extent, got %llu\n", em->block_start);
920 if (em->start != sectorsize || em->len != sectorsize) {
921 test_msg("Unexpected extent wanted start %u len %u, "
922 "got start %llu len %llu\n",
923 sectorsize, sectorsize, em->start, em->len);
926 if (em->flags != 0) {
927 test_msg("Unexpected flags set, wanted 0 got %lu\n",
936 btrfs_free_dummy_root(root);
940 static int test_extent_accounting(u32 sectorsize, u32 nodesize)
942 struct inode *inode = NULL;
943 struct btrfs_root *root = NULL;
946 inode = btrfs_new_test_inode();
948 test_msg("Couldn't allocate inode\n");
952 root = btrfs_alloc_dummy_root(sectorsize, nodesize);
954 test_msg("Couldn't allocate root\n");
958 root->fs_info = btrfs_alloc_dummy_fs_info();
959 if (!root->fs_info) {
960 test_msg("Couldn't allocate dummy fs info\n");
964 BTRFS_I(inode)->root = root;
965 btrfs_test_inode_set_ops(inode);
967 /* [BTRFS_MAX_EXTENT_SIZE] */
968 BTRFS_I(inode)->outstanding_extents++;
969 ret = btrfs_set_extent_delalloc(inode, 0, BTRFS_MAX_EXTENT_SIZE - 1,
972 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
975 if (BTRFS_I(inode)->outstanding_extents != 1) {
977 test_msg("Miscount, wanted 1, got %u\n",
978 BTRFS_I(inode)->outstanding_extents);
982 /* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
983 BTRFS_I(inode)->outstanding_extents++;
984 ret = btrfs_set_extent_delalloc(inode, BTRFS_MAX_EXTENT_SIZE,
985 BTRFS_MAX_EXTENT_SIZE + sectorsize - 1,
988 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
991 if (BTRFS_I(inode)->outstanding_extents != 2) {
993 test_msg("Miscount, wanted 2, got %u\n",
994 BTRFS_I(inode)->outstanding_extents);
998 /* [BTRFS_MAX_EXTENT_SIZE/2][sectorsize HOLE][the rest] */
999 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
1000 BTRFS_MAX_EXTENT_SIZE >> 1,
1001 (BTRFS_MAX_EXTENT_SIZE >> 1) + sectorsize - 1,
1002 EXTENT_DELALLOC | EXTENT_DIRTY |
1003 EXTENT_UPTODATE | EXTENT_DO_ACCOUNTING, 0, 0,
1006 test_msg("clear_extent_bit returned %d\n", ret);
1009 if (BTRFS_I(inode)->outstanding_extents != 2) {
1011 test_msg("Miscount, wanted 2, got %u\n",
1012 BTRFS_I(inode)->outstanding_extents);
1016 /* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
1017 BTRFS_I(inode)->outstanding_extents++;
1018 ret = btrfs_set_extent_delalloc(inode, BTRFS_MAX_EXTENT_SIZE >> 1,
1019 (BTRFS_MAX_EXTENT_SIZE >> 1)
1023 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1026 if (BTRFS_I(inode)->outstanding_extents != 2) {
1028 test_msg("Miscount, wanted 2, got %u\n",
1029 BTRFS_I(inode)->outstanding_extents);
1034 * [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize HOLE][BTRFS_MAX_EXTENT_SIZE+sectorsize]
1036 * I'm artificially adding 2 to outstanding_extents because in the
1037 * buffered IO case we'd add things up as we go, but I don't feel like
1038 * doing that here, this isn't the interesting case we want to test.
1040 BTRFS_I(inode)->outstanding_extents += 2;
1041 ret = btrfs_set_extent_delalloc(inode,
1042 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize,
1043 (BTRFS_MAX_EXTENT_SIZE << 1) + 3 * sectorsize - 1,
1046 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1049 if (BTRFS_I(inode)->outstanding_extents != 4) {
1051 test_msg("Miscount, wanted 4, got %u\n",
1052 BTRFS_I(inode)->outstanding_extents);
1057 * [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize][BTRFS_MAX_EXTENT_SIZE+sectorsize]
1059 BTRFS_I(inode)->outstanding_extents++;
1060 ret = btrfs_set_extent_delalloc(inode,
1061 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1062 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, NULL);
1064 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1067 if (BTRFS_I(inode)->outstanding_extents != 3) {
1069 test_msg("Miscount, wanted 3, got %u\n",
1070 BTRFS_I(inode)->outstanding_extents);
1074 /* [BTRFS_MAX_EXTENT_SIZE+4k][4K HOLE][BTRFS_MAX_EXTENT_SIZE+4k] */
1075 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
1076 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1077 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1,
1078 EXTENT_DIRTY | EXTENT_DELALLOC |
1079 EXTENT_DO_ACCOUNTING | EXTENT_UPTODATE, 0, 0,
1082 test_msg("clear_extent_bit returned %d\n", ret);
1085 if (BTRFS_I(inode)->outstanding_extents != 4) {
1087 test_msg("Miscount, wanted 4, got %u\n",
1088 BTRFS_I(inode)->outstanding_extents);
1093 * Refill the hole again just for good measure, because I thought it
1094 * might fail and I'd rather satisfy my paranoia at this point.
1096 BTRFS_I(inode)->outstanding_extents++;
1097 ret = btrfs_set_extent_delalloc(inode,
1098 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1099 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, NULL);
1101 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1104 if (BTRFS_I(inode)->outstanding_extents != 3) {
1106 test_msg("Miscount, wanted 3, got %u\n",
1107 BTRFS_I(inode)->outstanding_extents);
1112 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
1113 EXTENT_DIRTY | EXTENT_DELALLOC |
1114 EXTENT_DO_ACCOUNTING | EXTENT_UPTODATE, 0, 0,
1117 test_msg("clear_extent_bit returned %d\n", ret);
1120 if (BTRFS_I(inode)->outstanding_extents) {
1122 test_msg("Miscount, wanted 0, got %u\n",
1123 BTRFS_I(inode)->outstanding_extents);
1129 clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
1130 EXTENT_DIRTY | EXTENT_DELALLOC |
1131 EXTENT_DO_ACCOUNTING | EXTENT_UPTODATE, 0, 0,
1134 btrfs_free_dummy_root(root);
1138 int btrfs_test_inodes(u32 sectorsize, u32 nodesize)
1142 set_bit(EXTENT_FLAG_COMPRESSED, &compressed_only);
1143 set_bit(EXTENT_FLAG_VACANCY, &vacancy_only);
1144 set_bit(EXTENT_FLAG_PREALLOC, &prealloc_only);
1146 test_msg("Running btrfs_get_extent tests\n");
1147 ret = test_btrfs_get_extent(sectorsize, nodesize);
1150 test_msg("Running hole first btrfs_get_extent test\n");
1151 ret = test_hole_first(sectorsize, nodesize);
1154 test_msg("Running outstanding_extents tests\n");
1155 return test_extent_accounting(sectorsize, nodesize);