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 test_msg("running btrfs_get_extent tests");
231 inode = btrfs_new_test_inode();
233 test_std_err(TEST_ALLOC_INODE);
237 inode->i_mode = S_IFREG;
238 BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
239 BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
240 BTRFS_I(inode)->location.offset = 0;
242 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
244 test_std_err(TEST_ALLOC_FS_INFO);
248 root = btrfs_alloc_dummy_root(fs_info);
250 test_std_err(TEST_ALLOC_ROOT);
254 root->node = alloc_dummy_extent_buffer(fs_info, nodesize);
256 test_std_err(TEST_ALLOC_ROOT);
260 btrfs_set_header_nritems(root->node, 0);
261 btrfs_set_header_level(root->node, 0);
264 /* First with no extents */
265 BTRFS_I(inode)->root = root;
266 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, sectorsize);
269 test_err("got an error when we shouldn't have");
272 if (em->block_start != EXTENT_MAP_HOLE) {
273 test_err("expected a hole, got %llu", em->block_start);
277 btrfs_drop_extent_cache(BTRFS_I(inode), 0, (u64)-1, 0);
280 * All of the magic numbers are based on the mapping setup in
281 * setup_file_extents, so if you change anything there you need to
282 * update the comment and update the expected values below.
284 setup_file_extents(root, sectorsize);
286 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, (u64)-1);
288 test_err("got an error when we shouldn't have");
291 if (em->block_start != EXTENT_MAP_HOLE) {
292 test_err("expected a hole, got %llu", em->block_start);
295 if (em->start != 0 || em->len != 5) {
297 "unexpected extent wanted start 0 len 5, got start %llu len %llu",
301 if (em->flags != 0) {
302 test_err("unexpected flags set, want 0 have %lu", em->flags);
305 offset = em->start + em->len;
308 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize);
310 test_err("got an error when we shouldn't have");
313 if (em->block_start != EXTENT_MAP_INLINE) {
314 test_err("expected an inline, got %llu", em->block_start);
318 if (em->start != offset || em->len != (sectorsize - 5)) {
320 "unexpected extent wanted start %llu len 1, got start %llu len %llu",
321 offset, em->start, em->len);
324 if (em->flags != 0) {
325 test_err("unexpected flags set, want 0 have %lu", em->flags);
329 * We don't test anything else for inline since it doesn't get set
330 * unless we have a page for it to write into. Maybe we should change
333 offset = em->start + em->len;
336 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize);
338 test_err("got an error when we shouldn't have");
341 if (em->block_start != EXTENT_MAP_HOLE) {
342 test_err("expected a hole, got %llu", em->block_start);
345 if (em->start != offset || em->len != 4) {
347 "unexpected extent wanted start %llu len 4, got start %llu len %llu",
348 offset, em->start, em->len);
351 if (em->flags != 0) {
352 test_err("unexpected flags set, want 0 have %lu", em->flags);
355 offset = em->start + em->len;
359 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize);
361 test_err("got an error when we shouldn't have");
364 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
365 test_err("expected a real extent, got %llu", em->block_start);
368 if (em->start != offset || em->len != sectorsize - 1) {
370 "unexpected extent wanted start %llu len 4095, got start %llu len %llu",
371 offset, em->start, em->len);
374 if (em->flags != 0) {
375 test_err("unexpected flags set, want 0 have %lu", em->flags);
378 if (em->orig_start != em->start) {
379 test_err("wrong orig offset, want %llu, have %llu", em->start,
383 offset = em->start + em->len;
386 /* The next 3 are split extents */
387 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize);
389 test_err("got an error when we shouldn't have");
392 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
393 test_err("expected a real extent, got %llu", em->block_start);
396 if (em->start != offset || em->len != sectorsize) {
398 "unexpected extent start %llu len %u, got start %llu len %llu",
399 offset, sectorsize, em->start, em->len);
402 if (em->flags != 0) {
403 test_err("unexpected flags set, want 0 have %lu", em->flags);
406 if (em->orig_start != em->start) {
407 test_err("wrong orig offset, want %llu, have %llu", em->start,
411 disk_bytenr = em->block_start;
412 orig_start = em->start;
413 offset = em->start + em->len;
416 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize);
418 test_err("got an error when we shouldn't have");
421 if (em->block_start != EXTENT_MAP_HOLE) {
422 test_err("expected a hole, got %llu", em->block_start);
425 if (em->start != offset || em->len != sectorsize) {
427 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
428 offset, sectorsize, em->start, em->len);
431 if (em->flags != 0) {
432 test_err("unexpected flags set, want 0 have %lu", em->flags);
435 offset = em->start + em->len;
438 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize);
440 test_err("got an error when we shouldn't have");
443 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
444 test_err("expected a real extent, got %llu", em->block_start);
447 if (em->start != offset || em->len != 2 * sectorsize) {
449 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
450 offset, 2 * sectorsize, em->start, em->len);
453 if (em->flags != 0) {
454 test_err("unexpected flags set, want 0 have %lu", em->flags);
457 if (em->orig_start != orig_start) {
458 test_err("wrong orig offset, want %llu, have %llu",
459 orig_start, em->orig_start);
462 disk_bytenr += (em->start - orig_start);
463 if (em->block_start != disk_bytenr) {
464 test_err("wrong block start, want %llu, have %llu",
465 disk_bytenr, em->block_start);
468 offset = em->start + em->len;
471 /* Prealloc extent */
472 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize);
474 test_err("got an error when we shouldn't have");
477 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
478 test_err("expected a real extent, got %llu", em->block_start);
481 if (em->start != offset || em->len != sectorsize) {
483 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
484 offset, sectorsize, em->start, em->len);
487 if (em->flags != prealloc_only) {
488 test_err("unexpected flags set, want %lu have %lu",
489 prealloc_only, em->flags);
492 if (em->orig_start != em->start) {
493 test_err("wrong orig offset, want %llu, have %llu", em->start,
497 offset = em->start + em->len;
500 /* The next 3 are a half written prealloc extent */
501 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize);
503 test_err("got an error when we shouldn't have");
506 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
507 test_err("expected a real extent, got %llu", em->block_start);
510 if (em->start != offset || em->len != sectorsize) {
512 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
513 offset, sectorsize, em->start, em->len);
516 if (em->flags != prealloc_only) {
517 test_err("unexpected flags set, want %lu have %lu",
518 prealloc_only, em->flags);
521 if (em->orig_start != em->start) {
522 test_err("wrong orig offset, want %llu, have %llu", em->start,
526 disk_bytenr = em->block_start;
527 orig_start = em->start;
528 offset = em->start + em->len;
531 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize);
533 test_err("got an error when we shouldn't have");
536 if (em->block_start >= EXTENT_MAP_HOLE) {
537 test_err("expected a real extent, got %llu", em->block_start);
540 if (em->start != offset || em->len != sectorsize) {
542 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
543 offset, sectorsize, em->start, em->len);
546 if (em->flags != 0) {
547 test_err("unexpected flags set, want 0 have %lu", em->flags);
550 if (em->orig_start != orig_start) {
551 test_err("unexpected orig offset, wanted %llu, have %llu",
552 orig_start, em->orig_start);
555 if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
556 test_err("unexpected block start, wanted %llu, have %llu",
557 disk_bytenr + (em->start - em->orig_start),
561 offset = em->start + em->len;
564 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize);
566 test_err("got an error when we shouldn't have");
569 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
570 test_err("expected a real extent, got %llu", em->block_start);
573 if (em->start != offset || em->len != 2 * sectorsize) {
575 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
576 offset, 2 * sectorsize, em->start, em->len);
579 if (em->flags != prealloc_only) {
580 test_err("unexpected flags set, want %lu have %lu",
581 prealloc_only, em->flags);
584 if (em->orig_start != orig_start) {
585 test_err("wrong orig offset, want %llu, have %llu", orig_start,
589 if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
590 test_err("unexpected block start, wanted %llu, have %llu",
591 disk_bytenr + (em->start - em->orig_start),
595 offset = em->start + em->len;
598 /* Now for the compressed extent */
599 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize);
601 test_err("got an error when we shouldn't have");
604 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
605 test_err("expected a real extent, got %llu", em->block_start);
608 if (em->start != offset || em->len != 2 * sectorsize) {
610 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
611 offset, 2 * sectorsize, em->start, em->len);
614 if (em->flags != compressed_only) {
615 test_err("unexpected flags set, want %lu have %lu",
616 compressed_only, em->flags);
619 if (em->orig_start != em->start) {
620 test_err("wrong orig offset, want %llu, have %llu",
621 em->start, em->orig_start);
624 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
625 test_err("unexpected compress type, wanted %d, got %d",
626 BTRFS_COMPRESS_ZLIB, em->compress_type);
629 offset = em->start + em->len;
632 /* Split compressed extent */
633 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize);
635 test_err("got an error when we shouldn't have");
638 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
639 test_err("expected a real extent, got %llu", em->block_start);
642 if (em->start != offset || em->len != sectorsize) {
644 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
645 offset, sectorsize, em->start, em->len);
648 if (em->flags != compressed_only) {
649 test_err("unexpected flags set, want %lu have %lu",
650 compressed_only, em->flags);
653 if (em->orig_start != em->start) {
654 test_err("wrong orig offset, want %llu, have %llu",
655 em->start, em->orig_start);
658 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
659 test_err("unexpected compress type, wanted %d, got %d",
660 BTRFS_COMPRESS_ZLIB, em->compress_type);
663 disk_bytenr = em->block_start;
664 orig_start = em->start;
665 offset = em->start + em->len;
668 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize);
670 test_err("got an error when we shouldn't have");
673 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
674 test_err("expected a real extent, got %llu", em->block_start);
677 if (em->start != offset || em->len != sectorsize) {
679 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
680 offset, sectorsize, em->start, em->len);
683 if (em->flags != 0) {
684 test_err("unexpected flags set, want 0 have %lu", em->flags);
687 if (em->orig_start != em->start) {
688 test_err("wrong orig offset, want %llu, have %llu", em->start,
692 offset = em->start + em->len;
695 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize);
697 test_err("got an error when we shouldn't have");
700 if (em->block_start != disk_bytenr) {
701 test_err("block start does not match, want %llu got %llu",
702 disk_bytenr, em->block_start);
705 if (em->start != offset || em->len != 2 * sectorsize) {
707 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
708 offset, 2 * sectorsize, em->start, em->len);
711 if (em->flags != compressed_only) {
712 test_err("unexpected flags set, want %lu have %lu",
713 compressed_only, em->flags);
716 if (em->orig_start != orig_start) {
717 test_err("wrong orig offset, want %llu, have %llu",
718 em->start, orig_start);
721 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
722 test_err("unexpected compress type, wanted %d, got %d",
723 BTRFS_COMPRESS_ZLIB, em->compress_type);
726 offset = em->start + em->len;
729 /* A hole between regular extents but no hole extent */
730 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset + 6, sectorsize);
732 test_err("got an error when we shouldn't have");
735 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
736 test_err("expected a real extent, got %llu", em->block_start);
739 if (em->start != offset || em->len != sectorsize) {
741 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
742 offset, sectorsize, em->start, em->len);
745 if (em->flags != 0) {
746 test_err("unexpected flags set, want 0 have %lu", em->flags);
749 if (em->orig_start != em->start) {
750 test_err("wrong orig offset, want %llu, have %llu", em->start,
754 offset = em->start + em->len;
757 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, SZ_4M);
759 test_err("got an error when we shouldn't have");
762 if (em->block_start != EXTENT_MAP_HOLE) {
763 test_err("expected a hole extent, got %llu", em->block_start);
767 * Currently we just return a length that we requested rather than the
768 * length of the actual hole, if this changes we'll have to change this
771 if (em->start != offset || em->len != 3 * sectorsize) {
773 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
774 offset, 3 * sectorsize, em->start, em->len);
777 if (em->flags != vacancy_only) {
778 test_err("unexpected flags set, want %lu have %lu",
779 vacancy_only, em->flags);
782 if (em->orig_start != em->start) {
783 test_err("wrong orig offset, want %llu, have %llu", em->start,
787 offset = em->start + em->len;
790 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize);
792 test_err("got an error when we shouldn't have");
795 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
796 test_err("expected a real extent, got %llu", em->block_start);
799 if (em->start != offset || em->len != sectorsize) {
801 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
802 offset, sectorsize, em->start, em->len);
805 if (em->flags != 0) {
806 test_err("unexpected flags set, want 0 have %lu", em->flags);
809 if (em->orig_start != em->start) {
810 test_err("wrong orig offset, want %llu, have %llu", em->start,
819 btrfs_free_dummy_root(root);
820 btrfs_free_dummy_fs_info(fs_info);
824 static int test_hole_first(u32 sectorsize, u32 nodesize)
826 struct btrfs_fs_info *fs_info = NULL;
827 struct inode *inode = NULL;
828 struct btrfs_root *root = NULL;
829 struct extent_map *em = NULL;
832 test_msg("running hole first btrfs_get_extent test");
834 inode = btrfs_new_test_inode();
836 test_std_err(TEST_ALLOC_INODE);
840 BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
841 BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
842 BTRFS_I(inode)->location.offset = 0;
844 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
846 test_std_err(TEST_ALLOC_FS_INFO);
850 root = btrfs_alloc_dummy_root(fs_info);
852 test_std_err(TEST_ALLOC_ROOT);
856 root->node = alloc_dummy_extent_buffer(fs_info, nodesize);
858 test_std_err(TEST_ALLOC_ROOT);
862 btrfs_set_header_nritems(root->node, 0);
863 btrfs_set_header_level(root->node, 0);
864 BTRFS_I(inode)->root = root;
868 * Need a blank inode item here just so we don't confuse
871 insert_inode_item_key(root);
872 insert_extent(root, sectorsize, sectorsize, sectorsize, 0, sectorsize,
873 sectorsize, BTRFS_FILE_EXTENT_REG, 0, 1);
874 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, 2 * sectorsize);
876 test_err("got an error when we shouldn't have");
879 if (em->block_start != EXTENT_MAP_HOLE) {
880 test_err("expected a hole, got %llu", em->block_start);
883 if (em->start != 0 || em->len != sectorsize) {
885 "unexpected extent wanted start 0 len %u, got start %llu len %llu",
886 sectorsize, em->start, em->len);
889 if (em->flags != vacancy_only) {
890 test_err("wrong flags, wanted %lu, have %lu", vacancy_only,
896 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, sectorsize, 2 * sectorsize);
898 test_err("got an error when we shouldn't have");
901 if (em->block_start != sectorsize) {
902 test_err("expected a real extent, got %llu", em->block_start);
905 if (em->start != sectorsize || em->len != sectorsize) {
907 "unexpected extent wanted start %u len %u, got start %llu len %llu",
908 sectorsize, sectorsize, em->start, em->len);
911 if (em->flags != 0) {
912 test_err("unexpected flags set, wanted 0 got %lu",
921 btrfs_free_dummy_root(root);
922 btrfs_free_dummy_fs_info(fs_info);
926 static int test_extent_accounting(u32 sectorsize, u32 nodesize)
928 struct btrfs_fs_info *fs_info = NULL;
929 struct inode *inode = NULL;
930 struct btrfs_root *root = NULL;
933 test_msg("running outstanding_extents tests");
935 inode = btrfs_new_test_inode();
937 test_std_err(TEST_ALLOC_INODE);
941 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
943 test_std_err(TEST_ALLOC_FS_INFO);
947 root = btrfs_alloc_dummy_root(fs_info);
949 test_std_err(TEST_ALLOC_ROOT);
953 BTRFS_I(inode)->root = root;
954 btrfs_test_inode_set_ops(inode);
956 /* [BTRFS_MAX_EXTENT_SIZE] */
957 ret = btrfs_set_extent_delalloc(inode, 0, BTRFS_MAX_EXTENT_SIZE - 1, 0,
960 test_err("btrfs_set_extent_delalloc returned %d", ret);
963 if (BTRFS_I(inode)->outstanding_extents != 1) {
965 test_err("miscount, wanted 1, got %u",
966 BTRFS_I(inode)->outstanding_extents);
970 /* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
971 ret = btrfs_set_extent_delalloc(inode, BTRFS_MAX_EXTENT_SIZE,
972 BTRFS_MAX_EXTENT_SIZE + sectorsize - 1,
975 test_err("btrfs_set_extent_delalloc returned %d", ret);
978 if (BTRFS_I(inode)->outstanding_extents != 2) {
980 test_err("miscount, wanted 2, got %u",
981 BTRFS_I(inode)->outstanding_extents);
985 /* [BTRFS_MAX_EXTENT_SIZE/2][sectorsize HOLE][the rest] */
986 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
987 BTRFS_MAX_EXTENT_SIZE >> 1,
988 (BTRFS_MAX_EXTENT_SIZE >> 1) + sectorsize - 1,
989 EXTENT_DELALLOC | EXTENT_UPTODATE, 0, 0, NULL);
991 test_err("clear_extent_bit returned %d", ret);
994 if (BTRFS_I(inode)->outstanding_extents != 2) {
996 test_err("miscount, wanted 2, got %u",
997 BTRFS_I(inode)->outstanding_extents);
1001 /* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
1002 ret = btrfs_set_extent_delalloc(inode, BTRFS_MAX_EXTENT_SIZE >> 1,
1003 (BTRFS_MAX_EXTENT_SIZE >> 1)
1007 test_err("btrfs_set_extent_delalloc returned %d", ret);
1010 if (BTRFS_I(inode)->outstanding_extents != 2) {
1012 test_err("miscount, wanted 2, got %u",
1013 BTRFS_I(inode)->outstanding_extents);
1018 * [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize HOLE][BTRFS_MAX_EXTENT_SIZE+sectorsize]
1020 ret = btrfs_set_extent_delalloc(inode,
1021 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize,
1022 (BTRFS_MAX_EXTENT_SIZE << 1) + 3 * sectorsize - 1,
1025 test_err("btrfs_set_extent_delalloc returned %d", ret);
1028 if (BTRFS_I(inode)->outstanding_extents != 4) {
1030 test_err("miscount, wanted 4, got %u",
1031 BTRFS_I(inode)->outstanding_extents);
1036 * [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize][BTRFS_MAX_EXTENT_SIZE+sectorsize]
1038 ret = btrfs_set_extent_delalloc(inode,
1039 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1040 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, 0, NULL);
1042 test_err("btrfs_set_extent_delalloc returned %d", ret);
1045 if (BTRFS_I(inode)->outstanding_extents != 3) {
1047 test_err("miscount, wanted 3, got %u",
1048 BTRFS_I(inode)->outstanding_extents);
1052 /* [BTRFS_MAX_EXTENT_SIZE+4k][4K HOLE][BTRFS_MAX_EXTENT_SIZE+4k] */
1053 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
1054 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1055 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1,
1056 EXTENT_DELALLOC | EXTENT_UPTODATE, 0, 0, NULL);
1058 test_err("clear_extent_bit returned %d", ret);
1061 if (BTRFS_I(inode)->outstanding_extents != 4) {
1063 test_err("miscount, wanted 4, got %u",
1064 BTRFS_I(inode)->outstanding_extents);
1069 * Refill the hole again just for good measure, because I thought it
1070 * might fail and I'd rather satisfy my paranoia at this point.
1072 ret = btrfs_set_extent_delalloc(inode,
1073 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1074 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, 0, NULL);
1076 test_err("btrfs_set_extent_delalloc returned %d", ret);
1079 if (BTRFS_I(inode)->outstanding_extents != 3) {
1081 test_err("miscount, wanted 3, got %u",
1082 BTRFS_I(inode)->outstanding_extents);
1087 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
1088 EXTENT_DELALLOC | EXTENT_UPTODATE, 0, 0, NULL);
1090 test_err("clear_extent_bit returned %d", ret);
1093 if (BTRFS_I(inode)->outstanding_extents) {
1095 test_err("miscount, wanted 0, got %u",
1096 BTRFS_I(inode)->outstanding_extents);
1102 clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
1103 EXTENT_DELALLOC | EXTENT_UPTODATE, 0, 0, NULL);
1105 btrfs_free_dummy_root(root);
1106 btrfs_free_dummy_fs_info(fs_info);
1110 int btrfs_test_inodes(u32 sectorsize, u32 nodesize)
1114 test_msg("running inode tests");
1116 set_bit(EXTENT_FLAG_COMPRESSED, &compressed_only);
1117 set_bit(EXTENT_FLAG_PREALLOC, &prealloc_only);
1119 ret = test_btrfs_get_extent(sectorsize, nodesize);
1122 ret = test_hole_first(sectorsize, nodesize);
1125 return test_extent_accounting(sectorsize, nodesize);