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 btrfs_fs_info *fs_info = NULL;
234 struct inode *inode = NULL;
235 struct btrfs_root *root = NULL;
236 struct extent_map *em = NULL;
242 inode = btrfs_new_test_inode();
244 test_msg("Couldn't allocate inode\n");
248 inode->i_mode = S_IFREG;
249 BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
250 BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
251 BTRFS_I(inode)->location.offset = 0;
253 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
255 test_msg("Couldn't allocate dummy fs info\n");
259 root = btrfs_alloc_dummy_root(fs_info);
261 test_msg("Couldn't allocate root\n");
265 root->node = alloc_dummy_extent_buffer(fs_info, nodesize);
267 test_msg("Couldn't allocate dummy buffer\n");
272 * We will just free a dummy node if it's ref count is 2 so we need an
273 * extra ref so our searches don't accidentally release our page.
275 extent_buffer_get(root->node);
276 btrfs_set_header_nritems(root->node, 0);
277 btrfs_set_header_level(root->node, 0);
280 /* First with no extents */
281 BTRFS_I(inode)->root = root;
282 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, sectorsize, 0);
285 test_msg("Got an error when we shouldn't have\n");
288 if (em->block_start != EXTENT_MAP_HOLE) {
289 test_msg("Expected a hole, got %llu\n", em->block_start);
292 if (!test_bit(EXTENT_FLAG_VACANCY, &em->flags)) {
293 test_msg("Vacancy flag wasn't set properly\n");
297 btrfs_drop_extent_cache(BTRFS_I(inode), 0, (u64)-1, 0);
300 * All of the magic numbers are based on the mapping setup in
301 * setup_file_extents, so if you change anything there you need to
302 * update the comment and update the expected values below.
304 setup_file_extents(root, sectorsize);
306 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, (u64)-1, 0);
308 test_msg("Got an error when we shouldn't have\n");
311 if (em->block_start != EXTENT_MAP_HOLE) {
312 test_msg("Expected a hole, got %llu\n", em->block_start);
315 if (em->start != 0 || em->len != 5) {
316 test_msg("Unexpected extent wanted start 0 len 5, got start "
317 "%llu len %llu\n", em->start, em->len);
320 if (em->flags != 0) {
321 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
324 offset = em->start + em->len;
327 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
329 test_msg("Got an error when we shouldn't have\n");
332 if (em->block_start != EXTENT_MAP_INLINE) {
333 test_msg("Expected an inline, got %llu\n", em->block_start);
337 if (em->start != offset || em->len != (sectorsize - 5)) {
338 test_msg("Unexpected extent wanted start %llu len 1, got start "
339 "%llu len %llu\n", offset, em->start, em->len);
342 if (em->flags != 0) {
343 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
347 * We don't test anything else for inline since it doesn't get set
348 * unless we have a page for it to write into. Maybe we should change
351 offset = em->start + em->len;
354 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
356 test_msg("Got an error when we shouldn't have\n");
359 if (em->block_start != EXTENT_MAP_HOLE) {
360 test_msg("Expected a hole, got %llu\n", em->block_start);
363 if (em->start != offset || em->len != 4) {
364 test_msg("Unexpected extent wanted start %llu len 4, got start "
365 "%llu len %llu\n", offset, em->start, em->len);
368 if (em->flags != 0) {
369 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
372 offset = em->start + em->len;
376 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
378 test_msg("Got an error when we shouldn't have\n");
381 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
382 test_msg("Expected a real extent, got %llu\n", em->block_start);
385 if (em->start != offset || em->len != sectorsize - 1) {
386 test_msg("Unexpected extent wanted start %llu len 4095, got "
387 "start %llu len %llu\n", offset, em->start, em->len);
390 if (em->flags != 0) {
391 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
394 if (em->orig_start != em->start) {
395 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
399 offset = em->start + em->len;
402 /* The next 3 are split extents */
403 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
405 test_msg("Got an error when we shouldn't have\n");
408 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
409 test_msg("Expected a real extent, got %llu\n", em->block_start);
412 if (em->start != offset || em->len != sectorsize) {
413 test_msg("Unexpected extent start %llu len %u, "
414 "got start %llu len %llu\n",
415 offset, sectorsize, em->start, em->len);
418 if (em->flags != 0) {
419 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
422 if (em->orig_start != em->start) {
423 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
427 disk_bytenr = em->block_start;
428 orig_start = em->start;
429 offset = em->start + em->len;
432 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
434 test_msg("Got an error when we shouldn't have\n");
437 if (em->block_start != EXTENT_MAP_HOLE) {
438 test_msg("Expected a hole, got %llu\n", em->block_start);
441 if (em->start != offset || em->len != sectorsize) {
442 test_msg("Unexpected extent wanted start %llu len %u, "
443 "got start %llu len %llu\n",
444 offset, sectorsize, em->start, em->len);
447 if (em->flags != 0) {
448 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
451 offset = em->start + em->len;
454 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
456 test_msg("Got an error when we shouldn't have\n");
459 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
460 test_msg("Expected a real extent, got %llu\n", em->block_start);
463 if (em->start != offset || em->len != 2 * sectorsize) {
464 test_msg("Unexpected extent wanted start %llu len %u, "
465 "got start %llu len %llu\n",
466 offset, 2 * sectorsize, em->start, em->len);
469 if (em->flags != 0) {
470 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
473 if (em->orig_start != orig_start) {
474 test_msg("Wrong orig offset, want %llu, have %llu\n",
475 orig_start, em->orig_start);
478 disk_bytenr += (em->start - orig_start);
479 if (em->block_start != disk_bytenr) {
480 test_msg("Wrong block start, want %llu, have %llu\n",
481 disk_bytenr, em->block_start);
484 offset = em->start + em->len;
487 /* Prealloc extent */
488 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
490 test_msg("Got an error when we shouldn't have\n");
493 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
494 test_msg("Expected a real extent, got %llu\n", em->block_start);
497 if (em->start != offset || em->len != sectorsize) {
498 test_msg("Unexpected extent wanted start %llu len %u, "
499 "got start %llu len %llu\n",
500 offset, sectorsize, em->start, em->len);
503 if (em->flags != prealloc_only) {
504 test_msg("Unexpected flags set, want %lu have %lu\n",
505 prealloc_only, em->flags);
508 if (em->orig_start != em->start) {
509 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
513 offset = em->start + em->len;
516 /* The next 3 are a half written prealloc extent */
517 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
519 test_msg("Got an error when we shouldn't have\n");
522 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
523 test_msg("Expected a real extent, got %llu\n", em->block_start);
526 if (em->start != offset || em->len != sectorsize) {
527 test_msg("Unexpected extent wanted start %llu len %u, "
528 "got start %llu len %llu\n",
529 offset, sectorsize, em->start, em->len);
532 if (em->flags != prealloc_only) {
533 test_msg("Unexpected flags set, want %lu have %lu\n",
534 prealloc_only, em->flags);
537 if (em->orig_start != em->start) {
538 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
542 disk_bytenr = em->block_start;
543 orig_start = em->start;
544 offset = em->start + em->len;
547 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
549 test_msg("Got an error when we shouldn't have\n");
552 if (em->block_start >= EXTENT_MAP_HOLE) {
553 test_msg("Expected a real extent, got %llu\n", em->block_start);
556 if (em->start != offset || em->len != sectorsize) {
557 test_msg("Unexpected extent wanted start %llu len %u, "
558 "got start %llu len %llu\n",
559 offset, sectorsize, em->start, em->len);
562 if (em->flags != 0) {
563 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
566 if (em->orig_start != orig_start) {
567 test_msg("Unexpected orig offset, wanted %llu, have %llu\n",
568 orig_start, em->orig_start);
571 if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
572 test_msg("Unexpected block start, wanted %llu, have %llu\n",
573 disk_bytenr + (em->start - em->orig_start),
577 offset = em->start + em->len;
580 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
582 test_msg("Got an error when we shouldn't have\n");
585 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
586 test_msg("Expected a real extent, got %llu\n", em->block_start);
589 if (em->start != offset || em->len != 2 * sectorsize) {
590 test_msg("Unexpected extent wanted start %llu len %u, "
591 "got start %llu len %llu\n",
592 offset, 2 * sectorsize, em->start, em->len);
595 if (em->flags != prealloc_only) {
596 test_msg("Unexpected flags set, want %lu have %lu\n",
597 prealloc_only, em->flags);
600 if (em->orig_start != orig_start) {
601 test_msg("Wrong orig offset, want %llu, have %llu\n", orig_start,
605 if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
606 test_msg("Unexpected block start, wanted %llu, have %llu\n",
607 disk_bytenr + (em->start - em->orig_start),
611 offset = em->start + em->len;
614 /* Now for the compressed extent */
615 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
617 test_msg("Got an error when we shouldn't have\n");
620 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
621 test_msg("Expected a real extent, got %llu\n", em->block_start);
624 if (em->start != offset || em->len != 2 * sectorsize) {
625 test_msg("Unexpected extent wanted start %llu len %u,"
626 "got start %llu len %llu\n",
627 offset, 2 * sectorsize, em->start, em->len);
630 if (em->flags != compressed_only) {
631 test_msg("Unexpected flags set, want %lu have %lu\n",
632 compressed_only, em->flags);
635 if (em->orig_start != em->start) {
636 test_msg("Wrong orig offset, want %llu, have %llu\n",
637 em->start, em->orig_start);
640 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
641 test_msg("Unexpected compress type, wanted %d, got %d\n",
642 BTRFS_COMPRESS_ZLIB, em->compress_type);
645 offset = em->start + em->len;
648 /* Split compressed extent */
649 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
651 test_msg("Got an error when we shouldn't have\n");
654 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
655 test_msg("Expected a real extent, got %llu\n", em->block_start);
658 if (em->start != offset || em->len != sectorsize) {
659 test_msg("Unexpected extent wanted start %llu len %u,"
660 "got start %llu len %llu\n",
661 offset, sectorsize, em->start, em->len);
664 if (em->flags != compressed_only) {
665 test_msg("Unexpected flags set, want %lu have %lu\n",
666 compressed_only, em->flags);
669 if (em->orig_start != em->start) {
670 test_msg("Wrong orig offset, want %llu, have %llu\n",
671 em->start, em->orig_start);
674 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
675 test_msg("Unexpected compress type, wanted %d, got %d\n",
676 BTRFS_COMPRESS_ZLIB, em->compress_type);
679 disk_bytenr = em->block_start;
680 orig_start = em->start;
681 offset = em->start + em->len;
684 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
686 test_msg("Got an error when we shouldn't have\n");
689 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
690 test_msg("Expected a real extent, got %llu\n", em->block_start);
693 if (em->start != offset || em->len != sectorsize) {
694 test_msg("Unexpected extent wanted start %llu len %u, "
695 "got start %llu len %llu\n",
696 offset, sectorsize, em->start, em->len);
699 if (em->flags != 0) {
700 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
703 if (em->orig_start != em->start) {
704 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
708 offset = em->start + em->len;
711 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
713 test_msg("Got an error when we shouldn't have\n");
716 if (em->block_start != disk_bytenr) {
717 test_msg("Block start does not match, want %llu got %llu\n",
718 disk_bytenr, em->block_start);
721 if (em->start != offset || em->len != 2 * sectorsize) {
722 test_msg("Unexpected extent wanted start %llu len %u, "
723 "got start %llu len %llu\n",
724 offset, 2 * sectorsize, em->start, em->len);
727 if (em->flags != compressed_only) {
728 test_msg("Unexpected flags set, want %lu have %lu\n",
729 compressed_only, em->flags);
732 if (em->orig_start != orig_start) {
733 test_msg("Wrong orig offset, want %llu, have %llu\n",
734 em->start, orig_start);
737 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
738 test_msg("Unexpected compress type, wanted %d, got %d\n",
739 BTRFS_COMPRESS_ZLIB, em->compress_type);
742 offset = em->start + em->len;
745 /* A hole between regular extents but no hole extent */
746 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset + 6,
749 test_msg("Got an error when we shouldn't have\n");
752 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
753 test_msg("Expected a real extent, got %llu\n", em->block_start);
756 if (em->start != offset || em->len != sectorsize) {
757 test_msg("Unexpected extent wanted start %llu len %u, "
758 "got start %llu len %llu\n",
759 offset, sectorsize, em->start, em->len);
762 if (em->flags != 0) {
763 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
766 if (em->orig_start != em->start) {
767 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
771 offset = em->start + em->len;
774 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, 4096 * 1024, 0);
776 test_msg("Got an error when we shouldn't have\n");
779 if (em->block_start != EXTENT_MAP_HOLE) {
780 test_msg("Expected a hole extent, got %llu\n", em->block_start);
784 * Currently we just return a length that we requested rather than the
785 * length of the actual hole, if this changes we'll have to change this
788 if (em->start != offset || em->len != 3 * sectorsize) {
789 test_msg("Unexpected extent wanted start %llu len %u, "
790 "got start %llu len %llu\n",
791 offset, 3 * sectorsize, em->start, em->len);
794 if (em->flags != vacancy_only) {
795 test_msg("Unexpected flags set, want %lu have %lu\n",
796 vacancy_only, em->flags);
799 if (em->orig_start != em->start) {
800 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
804 offset = em->start + em->len;
807 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
809 test_msg("Got an error when we shouldn't have\n");
812 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
813 test_msg("Expected a real extent, got %llu\n", em->block_start);
816 if (em->start != offset || em->len != sectorsize) {
817 test_msg("Unexpected extent wanted start %llu len %u,"
818 "got start %llu len %llu\n",
819 offset, sectorsize, em->start, em->len);
822 if (em->flags != 0) {
823 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
826 if (em->orig_start != em->start) {
827 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
836 btrfs_free_dummy_root(root);
837 btrfs_free_dummy_fs_info(fs_info);
841 static int test_hole_first(u32 sectorsize, u32 nodesize)
843 struct btrfs_fs_info *fs_info = NULL;
844 struct inode *inode = NULL;
845 struct btrfs_root *root = NULL;
846 struct extent_map *em = NULL;
849 inode = btrfs_new_test_inode();
851 test_msg("Couldn't allocate inode\n");
855 BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
856 BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
857 BTRFS_I(inode)->location.offset = 0;
859 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
861 test_msg("Couldn't allocate dummy fs info\n");
865 root = btrfs_alloc_dummy_root(fs_info);
867 test_msg("Couldn't allocate root\n");
871 root->node = alloc_dummy_extent_buffer(fs_info, nodesize);
873 test_msg("Couldn't allocate dummy buffer\n");
877 extent_buffer_get(root->node);
878 btrfs_set_header_nritems(root->node, 0);
879 btrfs_set_header_level(root->node, 0);
880 BTRFS_I(inode)->root = root;
884 * Need a blank inode item here just so we don't confuse
887 insert_inode_item_key(root);
888 insert_extent(root, sectorsize, sectorsize, sectorsize, 0, sectorsize,
889 sectorsize, BTRFS_FILE_EXTENT_REG, 0, 1);
890 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, 2 * sectorsize, 0);
892 test_msg("Got an error when we shouldn't have\n");
895 if (em->block_start != EXTENT_MAP_HOLE) {
896 test_msg("Expected a hole, got %llu\n", em->block_start);
899 if (em->start != 0 || em->len != sectorsize) {
900 test_msg("Unexpected extent wanted start 0 len %u, "
901 "got start %llu len %llu\n",
902 sectorsize, em->start, em->len);
905 if (em->flags != vacancy_only) {
906 test_msg("Wrong flags, wanted %lu, have %lu\n", vacancy_only,
912 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, sectorsize,
915 test_msg("Got an error when we shouldn't have\n");
918 if (em->block_start != sectorsize) {
919 test_msg("Expected a real extent, got %llu\n", em->block_start);
922 if (em->start != sectorsize || em->len != sectorsize) {
923 test_msg("Unexpected extent wanted start %u len %u, "
924 "got start %llu len %llu\n",
925 sectorsize, sectorsize, em->start, em->len);
928 if (em->flags != 0) {
929 test_msg("Unexpected flags set, wanted 0 got %lu\n",
938 btrfs_free_dummy_root(root);
939 btrfs_free_dummy_fs_info(fs_info);
943 static int test_extent_accounting(u32 sectorsize, u32 nodesize)
945 struct btrfs_fs_info *fs_info = NULL;
946 struct inode *inode = NULL;
947 struct btrfs_root *root = NULL;
950 inode = btrfs_new_test_inode();
952 test_msg("Couldn't allocate inode\n");
956 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
958 test_msg("Couldn't allocate dummy fs info\n");
962 root = btrfs_alloc_dummy_root(fs_info);
964 test_msg("Couldn't allocate root\n");
968 BTRFS_I(inode)->root = root;
969 btrfs_test_inode_set_ops(inode);
971 /* [BTRFS_MAX_EXTENT_SIZE] */
972 BTRFS_I(inode)->outstanding_extents++;
973 ret = btrfs_set_extent_delalloc(inode, 0, BTRFS_MAX_EXTENT_SIZE - 1,
976 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
979 if (BTRFS_I(inode)->outstanding_extents != 1) {
981 test_msg("Miscount, wanted 1, got %u\n",
982 BTRFS_I(inode)->outstanding_extents);
986 /* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
987 BTRFS_I(inode)->outstanding_extents++;
988 ret = btrfs_set_extent_delalloc(inode, BTRFS_MAX_EXTENT_SIZE,
989 BTRFS_MAX_EXTENT_SIZE + sectorsize - 1,
992 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
995 if (BTRFS_I(inode)->outstanding_extents != 2) {
997 test_msg("Miscount, wanted 2, got %u\n",
998 BTRFS_I(inode)->outstanding_extents);
1002 /* [BTRFS_MAX_EXTENT_SIZE/2][sectorsize HOLE][the rest] */
1003 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
1004 BTRFS_MAX_EXTENT_SIZE >> 1,
1005 (BTRFS_MAX_EXTENT_SIZE >> 1) + sectorsize - 1,
1006 EXTENT_DELALLOC | EXTENT_DIRTY |
1007 EXTENT_UPTODATE | EXTENT_DO_ACCOUNTING, 0, 0,
1010 test_msg("clear_extent_bit returned %d\n", ret);
1013 if (BTRFS_I(inode)->outstanding_extents != 2) {
1015 test_msg("Miscount, wanted 2, got %u\n",
1016 BTRFS_I(inode)->outstanding_extents);
1020 /* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
1021 BTRFS_I(inode)->outstanding_extents++;
1022 ret = btrfs_set_extent_delalloc(inode, BTRFS_MAX_EXTENT_SIZE >> 1,
1023 (BTRFS_MAX_EXTENT_SIZE >> 1)
1027 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1030 if (BTRFS_I(inode)->outstanding_extents != 2) {
1032 test_msg("Miscount, wanted 2, got %u\n",
1033 BTRFS_I(inode)->outstanding_extents);
1038 * [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize HOLE][BTRFS_MAX_EXTENT_SIZE+sectorsize]
1040 * I'm artificially adding 2 to outstanding_extents because in the
1041 * buffered IO case we'd add things up as we go, but I don't feel like
1042 * doing that here, this isn't the interesting case we want to test.
1044 BTRFS_I(inode)->outstanding_extents += 2;
1045 ret = btrfs_set_extent_delalloc(inode,
1046 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize,
1047 (BTRFS_MAX_EXTENT_SIZE << 1) + 3 * sectorsize - 1,
1050 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1053 if (BTRFS_I(inode)->outstanding_extents != 4) {
1055 test_msg("Miscount, wanted 4, got %u\n",
1056 BTRFS_I(inode)->outstanding_extents);
1061 * [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize][BTRFS_MAX_EXTENT_SIZE+sectorsize]
1063 BTRFS_I(inode)->outstanding_extents++;
1064 ret = btrfs_set_extent_delalloc(inode,
1065 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1066 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, NULL, 0);
1068 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1071 if (BTRFS_I(inode)->outstanding_extents != 3) {
1073 test_msg("Miscount, wanted 3, got %u\n",
1074 BTRFS_I(inode)->outstanding_extents);
1078 /* [BTRFS_MAX_EXTENT_SIZE+4k][4K HOLE][BTRFS_MAX_EXTENT_SIZE+4k] */
1079 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
1080 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1081 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1,
1082 EXTENT_DIRTY | EXTENT_DELALLOC |
1083 EXTENT_DO_ACCOUNTING | EXTENT_UPTODATE, 0, 0,
1086 test_msg("clear_extent_bit returned %d\n", ret);
1089 if (BTRFS_I(inode)->outstanding_extents != 4) {
1091 test_msg("Miscount, wanted 4, got %u\n",
1092 BTRFS_I(inode)->outstanding_extents);
1097 * Refill the hole again just for good measure, because I thought it
1098 * might fail and I'd rather satisfy my paranoia at this point.
1100 BTRFS_I(inode)->outstanding_extents++;
1101 ret = btrfs_set_extent_delalloc(inode,
1102 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1103 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, NULL, 0);
1105 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1108 if (BTRFS_I(inode)->outstanding_extents != 3) {
1110 test_msg("Miscount, wanted 3, got %u\n",
1111 BTRFS_I(inode)->outstanding_extents);
1116 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
1117 EXTENT_DIRTY | EXTENT_DELALLOC |
1118 EXTENT_DO_ACCOUNTING | EXTENT_UPTODATE, 0, 0,
1121 test_msg("clear_extent_bit returned %d\n", ret);
1124 if (BTRFS_I(inode)->outstanding_extents) {
1126 test_msg("Miscount, wanted 0, got %u\n",
1127 BTRFS_I(inode)->outstanding_extents);
1133 clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
1134 EXTENT_DIRTY | EXTENT_DELALLOC |
1135 EXTENT_DO_ACCOUNTING | EXTENT_UPTODATE, 0, 0,
1138 btrfs_free_dummy_root(root);
1139 btrfs_free_dummy_fs_info(fs_info);
1143 int btrfs_test_inodes(u32 sectorsize, u32 nodesize)
1147 set_bit(EXTENT_FLAG_COMPRESSED, &compressed_only);
1148 set_bit(EXTENT_FLAG_VACANCY, &vacancy_only);
1149 set_bit(EXTENT_FLAG_PREALLOC, &prealloc_only);
1151 test_msg("Running btrfs_get_extent tests\n");
1152 ret = test_btrfs_get_extent(sectorsize, nodesize);
1155 test_msg("Running hole first btrfs_get_extent test\n");
1156 ret = test_hole_first(sectorsize, nodesize);
1159 test_msg("Running outstanding_extents tests\n");
1160 return test_extent_accounting(sectorsize, nodesize);