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 BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
249 BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
250 BTRFS_I(inode)->location.offset = 0;
252 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
254 test_msg("Couldn't allocate dummy fs info\n");
258 root = btrfs_alloc_dummy_root(fs_info);
260 test_msg("Couldn't allocate root\n");
264 root->node = alloc_dummy_extent_buffer(fs_info, nodesize);
266 test_msg("Couldn't allocate dummy buffer\n");
271 * We will just free a dummy node if it's ref count is 2 so we need an
272 * extra ref so our searches don't accidentally release our page.
274 extent_buffer_get(root->node);
275 btrfs_set_header_nritems(root->node, 0);
276 btrfs_set_header_level(root->node, 0);
279 /* First with no extents */
280 BTRFS_I(inode)->root = root;
281 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, sectorsize, 0);
284 test_msg("Got an error when we shouldn't have\n");
287 if (em->block_start != EXTENT_MAP_HOLE) {
288 test_msg("Expected a hole, got %llu\n", em->block_start);
292 btrfs_drop_extent_cache(BTRFS_I(inode), 0, (u64)-1, 0);
295 * All of the magic numbers are based on the mapping setup in
296 * setup_file_extents, so if you change anything there you need to
297 * update the comment and update the expected values below.
299 setup_file_extents(root, sectorsize);
301 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, (u64)-1, 0);
303 test_msg("Got an error when we shouldn't have\n");
306 if (em->block_start != EXTENT_MAP_HOLE) {
307 test_msg("Expected a hole, got %llu\n", em->block_start);
310 if (em->start != 0 || em->len != 5) {
311 test_msg("Unexpected extent wanted start 0 len 5, got start "
312 "%llu len %llu\n", em->start, em->len);
315 if (em->flags != 0) {
316 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
319 offset = em->start + em->len;
322 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
324 test_msg("Got an error when we shouldn't have\n");
327 if (em->block_start != EXTENT_MAP_INLINE) {
328 test_msg("Expected an inline, got %llu\n", em->block_start);
332 if (em->start != offset || em->len != (sectorsize - 5)) {
333 test_msg("Unexpected extent wanted start %llu len 1, got start "
334 "%llu len %llu\n", offset, em->start, em->len);
337 if (em->flags != 0) {
338 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
342 * We don't test anything else for inline since it doesn't get set
343 * unless we have a page for it to write into. Maybe we should change
346 offset = em->start + em->len;
349 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
351 test_msg("Got an error when we shouldn't have\n");
354 if (em->block_start != EXTENT_MAP_HOLE) {
355 test_msg("Expected a hole, got %llu\n", em->block_start);
358 if (em->start != offset || em->len != 4) {
359 test_msg("Unexpected extent wanted start %llu len 4, got start "
360 "%llu len %llu\n", offset, em->start, em->len);
363 if (em->flags != 0) {
364 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
367 offset = em->start + em->len;
371 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
373 test_msg("Got an error when we shouldn't have\n");
376 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
377 test_msg("Expected a real extent, got %llu\n", em->block_start);
380 if (em->start != offset || em->len != sectorsize - 1) {
381 test_msg("Unexpected extent wanted start %llu len 4095, got "
382 "start %llu len %llu\n", offset, em->start, em->len);
385 if (em->flags != 0) {
386 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
389 if (em->orig_start != em->start) {
390 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
394 offset = em->start + em->len;
397 /* The next 3 are split extents */
398 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
400 test_msg("Got an error when we shouldn't have\n");
403 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
404 test_msg("Expected a real extent, got %llu\n", em->block_start);
407 if (em->start != offset || em->len != sectorsize) {
408 test_msg("Unexpected extent start %llu len %u, "
409 "got start %llu len %llu\n",
410 offset, sectorsize, em->start, em->len);
413 if (em->flags != 0) {
414 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
417 if (em->orig_start != em->start) {
418 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
422 disk_bytenr = em->block_start;
423 orig_start = em->start;
424 offset = em->start + em->len;
427 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
429 test_msg("Got an error when we shouldn't have\n");
432 if (em->block_start != EXTENT_MAP_HOLE) {
433 test_msg("Expected a hole, got %llu\n", em->block_start);
436 if (em->start != offset || em->len != sectorsize) {
437 test_msg("Unexpected extent wanted start %llu len %u, "
438 "got start %llu len %llu\n",
439 offset, sectorsize, em->start, em->len);
442 if (em->flags != 0) {
443 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
446 offset = em->start + em->len;
449 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
451 test_msg("Got an error when we shouldn't have\n");
454 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
455 test_msg("Expected a real extent, got %llu\n", em->block_start);
458 if (em->start != offset || em->len != 2 * sectorsize) {
459 test_msg("Unexpected extent wanted start %llu len %u, "
460 "got start %llu len %llu\n",
461 offset, 2 * sectorsize, em->start, em->len);
464 if (em->flags != 0) {
465 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
468 if (em->orig_start != orig_start) {
469 test_msg("Wrong orig offset, want %llu, have %llu\n",
470 orig_start, em->orig_start);
473 disk_bytenr += (em->start - orig_start);
474 if (em->block_start != disk_bytenr) {
475 test_msg("Wrong block start, want %llu, have %llu\n",
476 disk_bytenr, em->block_start);
479 offset = em->start + em->len;
482 /* Prealloc extent */
483 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
485 test_msg("Got an error when we shouldn't have\n");
488 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
489 test_msg("Expected a real extent, got %llu\n", em->block_start);
492 if (em->start != offset || em->len != sectorsize) {
493 test_msg("Unexpected extent wanted start %llu len %u, "
494 "got start %llu len %llu\n",
495 offset, sectorsize, em->start, em->len);
498 if (em->flags != prealloc_only) {
499 test_msg("Unexpected flags set, want %lu have %lu\n",
500 prealloc_only, em->flags);
503 if (em->orig_start != em->start) {
504 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
508 offset = em->start + em->len;
511 /* The next 3 are a half written prealloc extent */
512 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
514 test_msg("Got an error when we shouldn't have\n");
517 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
518 test_msg("Expected a real extent, got %llu\n", em->block_start);
521 if (em->start != offset || em->len != sectorsize) {
522 test_msg("Unexpected extent wanted start %llu len %u, "
523 "got start %llu len %llu\n",
524 offset, sectorsize, em->start, em->len);
527 if (em->flags != prealloc_only) {
528 test_msg("Unexpected flags set, want %lu have %lu\n",
529 prealloc_only, em->flags);
532 if (em->orig_start != em->start) {
533 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
537 disk_bytenr = em->block_start;
538 orig_start = em->start;
539 offset = em->start + em->len;
542 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
544 test_msg("Got an error when we shouldn't have\n");
547 if (em->block_start >= EXTENT_MAP_HOLE) {
548 test_msg("Expected a real extent, got %llu\n", em->block_start);
551 if (em->start != offset || em->len != sectorsize) {
552 test_msg("Unexpected extent wanted start %llu len %u, "
553 "got start %llu len %llu\n",
554 offset, sectorsize, em->start, em->len);
557 if (em->flags != 0) {
558 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
561 if (em->orig_start != orig_start) {
562 test_msg("Unexpected orig offset, wanted %llu, have %llu\n",
563 orig_start, em->orig_start);
566 if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
567 test_msg("Unexpected block start, wanted %llu, have %llu\n",
568 disk_bytenr + (em->start - em->orig_start),
572 offset = em->start + em->len;
575 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
577 test_msg("Got an error when we shouldn't have\n");
580 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
581 test_msg("Expected a real extent, got %llu\n", em->block_start);
584 if (em->start != offset || em->len != 2 * sectorsize) {
585 test_msg("Unexpected extent wanted start %llu len %u, "
586 "got start %llu len %llu\n",
587 offset, 2 * sectorsize, em->start, em->len);
590 if (em->flags != prealloc_only) {
591 test_msg("Unexpected flags set, want %lu have %lu\n",
592 prealloc_only, em->flags);
595 if (em->orig_start != orig_start) {
596 test_msg("Wrong orig offset, want %llu, have %llu\n", orig_start,
600 if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
601 test_msg("Unexpected block start, wanted %llu, have %llu\n",
602 disk_bytenr + (em->start - em->orig_start),
606 offset = em->start + em->len;
609 /* Now for the compressed extent */
610 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
612 test_msg("Got an error when we shouldn't have\n");
615 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
616 test_msg("Expected a real extent, got %llu\n", em->block_start);
619 if (em->start != offset || em->len != 2 * sectorsize) {
620 test_msg("Unexpected extent wanted start %llu len %u,"
621 "got start %llu len %llu\n",
622 offset, 2 * sectorsize, em->start, em->len);
625 if (em->flags != compressed_only) {
626 test_msg("Unexpected flags set, want %lu have %lu\n",
627 compressed_only, em->flags);
630 if (em->orig_start != em->start) {
631 test_msg("Wrong orig offset, want %llu, have %llu\n",
632 em->start, em->orig_start);
635 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
636 test_msg("Unexpected compress type, wanted %d, got %d\n",
637 BTRFS_COMPRESS_ZLIB, em->compress_type);
640 offset = em->start + em->len;
643 /* Split compressed extent */
644 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
646 test_msg("Got an error when we shouldn't have\n");
649 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
650 test_msg("Expected a real extent, got %llu\n", em->block_start);
653 if (em->start != offset || em->len != sectorsize) {
654 test_msg("Unexpected extent wanted start %llu len %u,"
655 "got start %llu len %llu\n",
656 offset, sectorsize, em->start, em->len);
659 if (em->flags != compressed_only) {
660 test_msg("Unexpected flags set, want %lu have %lu\n",
661 compressed_only, em->flags);
664 if (em->orig_start != em->start) {
665 test_msg("Wrong orig offset, want %llu, have %llu\n",
666 em->start, em->orig_start);
669 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
670 test_msg("Unexpected compress type, wanted %d, got %d\n",
671 BTRFS_COMPRESS_ZLIB, em->compress_type);
674 disk_bytenr = em->block_start;
675 orig_start = em->start;
676 offset = em->start + em->len;
679 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
681 test_msg("Got an error when we shouldn't have\n");
684 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
685 test_msg("Expected a real extent, got %llu\n", em->block_start);
688 if (em->start != offset || em->len != sectorsize) {
689 test_msg("Unexpected extent wanted start %llu len %u, "
690 "got start %llu len %llu\n",
691 offset, sectorsize, em->start, em->len);
694 if (em->flags != 0) {
695 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
698 if (em->orig_start != em->start) {
699 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
703 offset = em->start + em->len;
706 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
708 test_msg("Got an error when we shouldn't have\n");
711 if (em->block_start != disk_bytenr) {
712 test_msg("Block start does not match, want %llu got %llu\n",
713 disk_bytenr, em->block_start);
716 if (em->start != offset || em->len != 2 * sectorsize) {
717 test_msg("Unexpected extent wanted start %llu len %u, "
718 "got start %llu len %llu\n",
719 offset, 2 * sectorsize, em->start, em->len);
722 if (em->flags != compressed_only) {
723 test_msg("Unexpected flags set, want %lu have %lu\n",
724 compressed_only, em->flags);
727 if (em->orig_start != orig_start) {
728 test_msg("Wrong orig offset, want %llu, have %llu\n",
729 em->start, orig_start);
732 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
733 test_msg("Unexpected compress type, wanted %d, got %d\n",
734 BTRFS_COMPRESS_ZLIB, em->compress_type);
737 offset = em->start + em->len;
740 /* A hole between regular extents but no hole extent */
741 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset + 6,
744 test_msg("Got an error when we shouldn't have\n");
747 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
748 test_msg("Expected a real extent, got %llu\n", em->block_start);
751 if (em->start != offset || em->len != sectorsize) {
752 test_msg("Unexpected extent wanted start %llu len %u, "
753 "got start %llu len %llu\n",
754 offset, sectorsize, em->start, em->len);
757 if (em->flags != 0) {
758 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
761 if (em->orig_start != em->start) {
762 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
766 offset = em->start + em->len;
769 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, SZ_4M, 0);
771 test_msg("Got an error when we shouldn't have\n");
774 if (em->block_start != EXTENT_MAP_HOLE) {
775 test_msg("Expected a hole extent, got %llu\n", em->block_start);
779 * Currently we just return a length that we requested rather than the
780 * length of the actual hole, if this changes we'll have to change this
783 if (em->start != offset || em->len != 3 * sectorsize) {
784 test_msg("Unexpected extent wanted start %llu len %u, "
785 "got start %llu len %llu\n",
786 offset, 3 * sectorsize, em->start, em->len);
789 if (em->flags != vacancy_only) {
790 test_msg("Unexpected flags set, want %lu have %lu\n",
791 vacancy_only, em->flags);
794 if (em->orig_start != em->start) {
795 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
799 offset = em->start + em->len;
802 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
804 test_msg("Got an error when we shouldn't have\n");
807 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
808 test_msg("Expected a real extent, got %llu\n", em->block_start);
811 if (em->start != offset || em->len != sectorsize) {
812 test_msg("Unexpected extent wanted start %llu len %u,"
813 "got start %llu len %llu\n",
814 offset, sectorsize, em->start, em->len);
817 if (em->flags != 0) {
818 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
821 if (em->orig_start != em->start) {
822 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
831 btrfs_free_dummy_root(root);
832 btrfs_free_dummy_fs_info(fs_info);
836 static int test_hole_first(u32 sectorsize, u32 nodesize)
838 struct btrfs_fs_info *fs_info = NULL;
839 struct inode *inode = NULL;
840 struct btrfs_root *root = NULL;
841 struct extent_map *em = NULL;
844 inode = btrfs_new_test_inode();
846 test_msg("Couldn't allocate inode\n");
850 BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
851 BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
852 BTRFS_I(inode)->location.offset = 0;
854 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
856 test_msg("Couldn't allocate dummy fs info\n");
860 root = btrfs_alloc_dummy_root(fs_info);
862 test_msg("Couldn't allocate root\n");
866 root->node = alloc_dummy_extent_buffer(fs_info, nodesize);
868 test_msg("Couldn't allocate dummy buffer\n");
872 extent_buffer_get(root->node);
873 btrfs_set_header_nritems(root->node, 0);
874 btrfs_set_header_level(root->node, 0);
875 BTRFS_I(inode)->root = root;
879 * Need a blank inode item here just so we don't confuse
882 insert_inode_item_key(root);
883 insert_extent(root, sectorsize, sectorsize, sectorsize, 0, sectorsize,
884 sectorsize, BTRFS_FILE_EXTENT_REG, 0, 1);
885 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, 2 * sectorsize, 0);
887 test_msg("Got an error when we shouldn't have\n");
890 if (em->block_start != EXTENT_MAP_HOLE) {
891 test_msg("Expected a hole, got %llu\n", em->block_start);
894 if (em->start != 0 || em->len != sectorsize) {
895 test_msg("Unexpected extent wanted start 0 len %u, "
896 "got start %llu len %llu\n",
897 sectorsize, em->start, em->len);
900 if (em->flags != vacancy_only) {
901 test_msg("Wrong flags, wanted %lu, have %lu\n", vacancy_only,
907 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, sectorsize,
910 test_msg("Got an error when we shouldn't have\n");
913 if (em->block_start != sectorsize) {
914 test_msg("Expected a real extent, got %llu\n", em->block_start);
917 if (em->start != sectorsize || em->len != sectorsize) {
918 test_msg("Unexpected extent wanted start %u len %u, "
919 "got start %llu len %llu\n",
920 sectorsize, sectorsize, em->start, em->len);
923 if (em->flags != 0) {
924 test_msg("Unexpected flags set, wanted 0 got %lu\n",
933 btrfs_free_dummy_root(root);
934 btrfs_free_dummy_fs_info(fs_info);
938 static int test_extent_accounting(u32 sectorsize, u32 nodesize)
940 struct btrfs_fs_info *fs_info = NULL;
941 struct inode *inode = NULL;
942 struct btrfs_root *root = NULL;
945 inode = btrfs_new_test_inode();
947 test_msg("Couldn't allocate inode\n");
951 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
953 test_msg("Couldn't allocate dummy fs info\n");
957 root = btrfs_alloc_dummy_root(fs_info);
959 test_msg("Couldn't allocate root\n");
963 BTRFS_I(inode)->root = root;
964 btrfs_test_inode_set_ops(inode);
966 /* [BTRFS_MAX_EXTENT_SIZE] */
967 ret = btrfs_set_extent_delalloc(inode, 0, BTRFS_MAX_EXTENT_SIZE - 1, 0,
970 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
973 if (BTRFS_I(inode)->outstanding_extents != 1) {
975 test_msg("Miscount, wanted 1, got %u\n",
976 BTRFS_I(inode)->outstanding_extents);
980 /* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
981 ret = btrfs_set_extent_delalloc(inode, BTRFS_MAX_EXTENT_SIZE,
982 BTRFS_MAX_EXTENT_SIZE + sectorsize - 1,
985 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
988 if (BTRFS_I(inode)->outstanding_extents != 2) {
990 test_msg("Miscount, wanted 2, got %u\n",
991 BTRFS_I(inode)->outstanding_extents);
995 /* [BTRFS_MAX_EXTENT_SIZE/2][sectorsize HOLE][the rest] */
996 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
997 BTRFS_MAX_EXTENT_SIZE >> 1,
998 (BTRFS_MAX_EXTENT_SIZE >> 1) + sectorsize - 1,
999 EXTENT_DELALLOC | EXTENT_DIRTY |
1000 EXTENT_UPTODATE, 0, 0, NULL);
1002 test_msg("clear_extent_bit returned %d\n", ret);
1005 if (BTRFS_I(inode)->outstanding_extents != 2) {
1007 test_msg("Miscount, wanted 2, got %u\n",
1008 BTRFS_I(inode)->outstanding_extents);
1012 /* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
1013 ret = btrfs_set_extent_delalloc(inode, BTRFS_MAX_EXTENT_SIZE >> 1,
1014 (BTRFS_MAX_EXTENT_SIZE >> 1)
1018 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1021 if (BTRFS_I(inode)->outstanding_extents != 2) {
1023 test_msg("Miscount, wanted 2, got %u\n",
1024 BTRFS_I(inode)->outstanding_extents);
1029 * [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize HOLE][BTRFS_MAX_EXTENT_SIZE+sectorsize]
1031 ret = btrfs_set_extent_delalloc(inode,
1032 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize,
1033 (BTRFS_MAX_EXTENT_SIZE << 1) + 3 * sectorsize - 1,
1036 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1039 if (BTRFS_I(inode)->outstanding_extents != 4) {
1041 test_msg("Miscount, wanted 4, got %u\n",
1042 BTRFS_I(inode)->outstanding_extents);
1047 * [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize][BTRFS_MAX_EXTENT_SIZE+sectorsize]
1049 ret = btrfs_set_extent_delalloc(inode,
1050 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1051 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, 0, NULL, 0);
1053 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1056 if (BTRFS_I(inode)->outstanding_extents != 3) {
1058 test_msg("Miscount, wanted 3, got %u\n",
1059 BTRFS_I(inode)->outstanding_extents);
1063 /* [BTRFS_MAX_EXTENT_SIZE+4k][4K HOLE][BTRFS_MAX_EXTENT_SIZE+4k] */
1064 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
1065 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1066 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1,
1067 EXTENT_DIRTY | EXTENT_DELALLOC |
1068 EXTENT_UPTODATE, 0, 0, NULL);
1070 test_msg("clear_extent_bit returned %d\n", ret);
1073 if (BTRFS_I(inode)->outstanding_extents != 4) {
1075 test_msg("Miscount, wanted 4, got %u\n",
1076 BTRFS_I(inode)->outstanding_extents);
1081 * Refill the hole again just for good measure, because I thought it
1082 * might fail and I'd rather satisfy my paranoia at this point.
1084 ret = btrfs_set_extent_delalloc(inode,
1085 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1086 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, 0, NULL, 0);
1088 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1091 if (BTRFS_I(inode)->outstanding_extents != 3) {
1093 test_msg("Miscount, wanted 3, got %u\n",
1094 BTRFS_I(inode)->outstanding_extents);
1099 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
1100 EXTENT_DIRTY | EXTENT_DELALLOC |
1101 EXTENT_UPTODATE, 0, 0, NULL);
1103 test_msg("clear_extent_bit returned %d\n", ret);
1106 if (BTRFS_I(inode)->outstanding_extents) {
1108 test_msg("Miscount, wanted 0, got %u\n",
1109 BTRFS_I(inode)->outstanding_extents);
1115 clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
1116 EXTENT_DIRTY | EXTENT_DELALLOC |
1117 EXTENT_UPTODATE, 0, 0, NULL);
1119 btrfs_free_dummy_root(root);
1120 btrfs_free_dummy_fs_info(fs_info);
1124 int btrfs_test_inodes(u32 sectorsize, u32 nodesize)
1128 set_bit(EXTENT_FLAG_COMPRESSED, &compressed_only);
1129 set_bit(EXTENT_FLAG_PREALLOC, &prealloc_only);
1131 test_msg("Running btrfs_get_extent tests\n");
1132 ret = test_btrfs_get_extent(sectorsize, nodesize);
1135 test_msg("Running hole first btrfs_get_extent test\n");
1136 ret = test_hole_first(sectorsize, nodesize);
1139 test_msg("Running outstanding_extents tests\n");
1140 return test_extent_accounting(sectorsize, nodesize);