1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2013 Fusion IO. All rights reserved.
6 #include <linux/types.h>
7 #include "btrfs-tests.h"
9 #include "../btrfs_inode.h"
10 #include "../disk-io.h"
11 #include "../extent_io.h"
12 #include "../volumes.h"
13 #include "../compression.h"
15 static void insert_extent(struct btrfs_root *root, u64 start, u64 len,
16 u64 ram_bytes, u64 offset, u64 disk_bytenr,
17 u64 disk_len, u32 type, u8 compression, int slot)
19 struct btrfs_path path;
20 struct btrfs_file_extent_item *fi;
21 struct extent_buffer *leaf = root->node;
23 u32 value_len = sizeof(struct btrfs_file_extent_item);
25 if (type == BTRFS_FILE_EXTENT_INLINE)
27 memset(&path, 0, sizeof(path));
32 key.objectid = BTRFS_FIRST_FREE_OBJECTID;
33 key.type = BTRFS_EXTENT_DATA_KEY;
36 setup_items_for_insert(root, &path, &key, &value_len, value_len,
37 value_len + sizeof(struct btrfs_item), 1);
38 fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);
39 btrfs_set_file_extent_generation(leaf, fi, 1);
40 btrfs_set_file_extent_type(leaf, fi, type);
41 btrfs_set_file_extent_disk_bytenr(leaf, fi, disk_bytenr);
42 btrfs_set_file_extent_disk_num_bytes(leaf, fi, disk_len);
43 btrfs_set_file_extent_offset(leaf, fi, offset);
44 btrfs_set_file_extent_num_bytes(leaf, fi, len);
45 btrfs_set_file_extent_ram_bytes(leaf, fi, ram_bytes);
46 btrfs_set_file_extent_compression(leaf, fi, compression);
47 btrfs_set_file_extent_encryption(leaf, fi, 0);
48 btrfs_set_file_extent_other_encoding(leaf, fi, 0);
51 static void insert_inode_item_key(struct btrfs_root *root)
53 struct btrfs_path path;
54 struct extent_buffer *leaf = root->node;
58 memset(&path, 0, sizeof(path));
63 key.objectid = BTRFS_INODE_ITEM_KEY;
64 key.type = BTRFS_INODE_ITEM_KEY;
67 setup_items_for_insert(root, &path, &key, &value_len, value_len,
68 value_len + sizeof(struct btrfs_item), 1);
72 * Build the most complicated map of extents the earth has ever seen. We want
73 * this so we can test all of the corner cases of btrfs_get_extent. Here is a
74 * diagram of how the extents will look though this may not be possible we still
75 * want to make sure everything acts normally (the last number is not inclusive)
77 * [0 - 5][5 - 6][ 6 - 4096 ][ 4096 - 4100][4100 - 8195][8195 - 12291]
78 * [hole ][inline][hole but no extent][ hole ][ regular ][regular1 split]
80 * [12291 - 16387][16387 - 24579][24579 - 28675][ 28675 - 32771][32771 - 36867 ]
81 * [ hole ][regular1 split][ prealloc ][ prealloc1 ][prealloc1 written]
83 * [36867 - 45059][45059 - 53251][53251 - 57347][57347 - 61443][61443- 69635]
84 * [ prealloc1 ][ compressed ][ compressed1 ][ regular ][ compressed1]
86 * [69635-73731][ 73731 - 86019 ][86019-90115]
87 * [ regular ][ hole but no extent][ regular ]
89 static void setup_file_extents(struct btrfs_root *root, u32 sectorsize)
92 u64 disk_bytenr = SZ_1M;
95 /* First we want a hole */
96 insert_extent(root, offset, 5, 5, 0, 0, 0, BTRFS_FILE_EXTENT_REG, 0,
102 * Now we want an inline extent, I don't think this is possible but hey
103 * why not? Also keep in mind if we have an inline extent it counts as
104 * the whole first page. If we were to expand it we would have to cow
105 * and we wouldn't have an inline extent anymore.
107 insert_extent(root, offset, 1, 1, 0, 0, 0, BTRFS_FILE_EXTENT_INLINE, 0,
112 /* Now another hole */
113 insert_extent(root, offset, 4, 4, 0, 0, 0, BTRFS_FILE_EXTENT_REG, 0,
118 /* Now for a regular extent */
119 insert_extent(root, offset, sectorsize - 1, sectorsize - 1, 0,
120 disk_bytenr, sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
122 disk_bytenr += sectorsize;
123 offset += sectorsize - 1;
126 * Now for 3 extents that were split from a hole punch so we test
129 insert_extent(root, offset, sectorsize, 4 * sectorsize, 0, disk_bytenr,
130 4 * sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
132 offset += sectorsize;
133 insert_extent(root, offset, sectorsize, sectorsize, 0, 0, 0,
134 BTRFS_FILE_EXTENT_REG, 0, slot);
136 offset += sectorsize;
137 insert_extent(root, offset, 2 * sectorsize, 4 * sectorsize,
138 2 * sectorsize, disk_bytenr, 4 * sectorsize,
139 BTRFS_FILE_EXTENT_REG, 0, slot);
141 offset += 2 * sectorsize;
142 disk_bytenr += 4 * sectorsize;
144 /* Now for a unwritten prealloc extent */
145 insert_extent(root, offset, sectorsize, sectorsize, 0, disk_bytenr,
146 sectorsize, BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
148 offset += sectorsize;
151 * We want to jack up disk_bytenr a little more so the em stuff doesn't
154 disk_bytenr += 2 * sectorsize;
157 * Now for a partially written prealloc extent, basically the same as
158 * the hole punch example above. Ram_bytes never changes when you mark
159 * extents written btw.
161 insert_extent(root, offset, sectorsize, 4 * sectorsize, 0, disk_bytenr,
162 4 * sectorsize, BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
164 offset += sectorsize;
165 insert_extent(root, offset, sectorsize, 4 * sectorsize, sectorsize,
166 disk_bytenr, 4 * sectorsize, BTRFS_FILE_EXTENT_REG, 0,
169 offset += sectorsize;
170 insert_extent(root, offset, 2 * sectorsize, 4 * sectorsize,
171 2 * sectorsize, disk_bytenr, 4 * sectorsize,
172 BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
174 offset += 2 * sectorsize;
175 disk_bytenr += 4 * sectorsize;
177 /* Now a normal compressed extent */
178 insert_extent(root, offset, 2 * sectorsize, 2 * sectorsize, 0,
179 disk_bytenr, sectorsize, BTRFS_FILE_EXTENT_REG,
180 BTRFS_COMPRESS_ZLIB, slot);
182 offset += 2 * sectorsize;
184 disk_bytenr += 2 * sectorsize;
186 /* Now a split compressed extent */
187 insert_extent(root, offset, sectorsize, 4 * sectorsize, 0, disk_bytenr,
188 sectorsize, BTRFS_FILE_EXTENT_REG,
189 BTRFS_COMPRESS_ZLIB, slot);
191 offset += sectorsize;
192 insert_extent(root, offset, sectorsize, sectorsize, 0,
193 disk_bytenr + sectorsize, sectorsize,
194 BTRFS_FILE_EXTENT_REG, 0, slot);
196 offset += sectorsize;
197 insert_extent(root, offset, 2 * sectorsize, 4 * sectorsize,
198 2 * sectorsize, disk_bytenr, sectorsize,
199 BTRFS_FILE_EXTENT_REG, BTRFS_COMPRESS_ZLIB, slot);
201 offset += 2 * sectorsize;
202 disk_bytenr += 2 * sectorsize;
204 /* Now extents that have a hole but no hole extent */
205 insert_extent(root, offset, sectorsize, sectorsize, 0, disk_bytenr,
206 sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
208 offset += 4 * sectorsize;
209 disk_bytenr += sectorsize;
210 insert_extent(root, offset, sectorsize, sectorsize, 0, disk_bytenr,
211 sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
214 static unsigned long prealloc_only = 0;
215 static unsigned long compressed_only = 0;
216 static unsigned long vacancy_only = 0;
218 static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
220 struct btrfs_fs_info *fs_info = NULL;
221 struct inode *inode = NULL;
222 struct btrfs_root *root = NULL;
223 struct extent_map *em = NULL;
229 inode = btrfs_new_test_inode();
231 test_err("couldn't allocate inode");
235 BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
236 BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
237 BTRFS_I(inode)->location.offset = 0;
239 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
241 test_err("couldn't allocate dummy fs info");
245 root = btrfs_alloc_dummy_root(fs_info);
247 test_err("couldn't allocate root");
251 root->node = alloc_dummy_extent_buffer(fs_info, nodesize);
253 test_err("couldn't allocate dummy buffer");
258 * We will just free a dummy node if it's ref count is 2 so we need an
259 * extra ref so our searches don't accidentally release our page.
261 extent_buffer_get(root->node);
262 btrfs_set_header_nritems(root->node, 0);
263 btrfs_set_header_level(root->node, 0);
266 /* First with no extents */
267 BTRFS_I(inode)->root = root;
268 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, sectorsize, 0);
271 test_err("got an error when we shouldn't have");
274 if (em->block_start != EXTENT_MAP_HOLE) {
275 test_err("expected a hole, got %llu", em->block_start);
279 btrfs_drop_extent_cache(BTRFS_I(inode), 0, (u64)-1, 0);
282 * All of the magic numbers are based on the mapping setup in
283 * setup_file_extents, so if you change anything there you need to
284 * update the comment and update the expected values below.
286 setup_file_extents(root, sectorsize);
288 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, (u64)-1, 0);
290 test_err("got an error when we shouldn't have");
293 if (em->block_start != EXTENT_MAP_HOLE) {
294 test_err("expected a hole, got %llu", em->block_start);
297 if (em->start != 0 || em->len != 5) {
299 "unexpected extent wanted start 0 len 5, got start %llu len %llu",
303 if (em->flags != 0) {
304 test_err("unexpected flags set, want 0 have %lu", em->flags);
307 offset = em->start + em->len;
310 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
312 test_err("got an error when we shouldn't have");
315 if (em->block_start != EXTENT_MAP_INLINE) {
316 test_err("expected an inline, got %llu", em->block_start);
320 if (em->start != offset || em->len != (sectorsize - 5)) {
322 "unexpected extent wanted start %llu len 1, got start %llu len %llu",
323 offset, em->start, em->len);
326 if (em->flags != 0) {
327 test_err("unexpected flags set, want 0 have %lu", em->flags);
331 * We don't test anything else for inline since it doesn't get set
332 * unless we have a page for it to write into. Maybe we should change
335 offset = em->start + em->len;
338 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
340 test_err("got an error when we shouldn't have");
343 if (em->block_start != EXTENT_MAP_HOLE) {
344 test_err("expected a hole, got %llu", em->block_start);
347 if (em->start != offset || em->len != 4) {
349 "unexpected extent wanted start %llu len 4, got start %llu len %llu",
350 offset, em->start, em->len);
353 if (em->flags != 0) {
354 test_err("unexpected flags set, want 0 have %lu", em->flags);
357 offset = em->start + em->len;
361 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
363 test_err("got an error when we shouldn't have");
366 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
367 test_err("expected a real extent, got %llu", em->block_start);
370 if (em->start != offset || em->len != sectorsize - 1) {
372 "unexpected extent wanted start %llu len 4095, got start %llu len %llu",
373 offset, em->start, em->len);
376 if (em->flags != 0) {
377 test_err("unexpected flags set, want 0 have %lu", em->flags);
380 if (em->orig_start != em->start) {
381 test_err("wrong orig offset, want %llu, have %llu", em->start,
385 offset = em->start + em->len;
388 /* The next 3 are split extents */
389 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
391 test_err("got an error when we shouldn't have");
394 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
395 test_err("expected a real extent, got %llu", em->block_start);
398 if (em->start != offset || em->len != sectorsize) {
400 "unexpected extent start %llu len %u, got start %llu len %llu",
401 offset, sectorsize, em->start, em->len);
404 if (em->flags != 0) {
405 test_err("unexpected flags set, want 0 have %lu", em->flags);
408 if (em->orig_start != em->start) {
409 test_err("wrong orig offset, want %llu, have %llu", em->start,
413 disk_bytenr = em->block_start;
414 orig_start = em->start;
415 offset = em->start + em->len;
418 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
420 test_err("got an error when we shouldn't have");
423 if (em->block_start != EXTENT_MAP_HOLE) {
424 test_err("expected a hole, got %llu", em->block_start);
427 if (em->start != offset || em->len != sectorsize) {
429 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
430 offset, sectorsize, em->start, em->len);
433 if (em->flags != 0) {
434 test_err("unexpected flags set, want 0 have %lu", em->flags);
437 offset = em->start + em->len;
440 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
442 test_err("got an error when we shouldn't have");
445 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
446 test_err("expected a real extent, got %llu", em->block_start);
449 if (em->start != offset || em->len != 2 * sectorsize) {
451 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
452 offset, 2 * sectorsize, em->start, em->len);
455 if (em->flags != 0) {
456 test_err("unexpected flags set, want 0 have %lu", em->flags);
459 if (em->orig_start != orig_start) {
460 test_err("wrong orig offset, want %llu, have %llu",
461 orig_start, em->orig_start);
464 disk_bytenr += (em->start - orig_start);
465 if (em->block_start != disk_bytenr) {
466 test_err("wrong block start, want %llu, have %llu",
467 disk_bytenr, em->block_start);
470 offset = em->start + em->len;
473 /* Prealloc extent */
474 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
476 test_err("got an error when we shouldn't have");
479 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
480 test_err("expected a real extent, got %llu", em->block_start);
483 if (em->start != offset || em->len != sectorsize) {
485 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
486 offset, sectorsize, em->start, em->len);
489 if (em->flags != prealloc_only) {
490 test_err("unexpected flags set, want %lu have %lu",
491 prealloc_only, em->flags);
494 if (em->orig_start != em->start) {
495 test_err("wrong orig offset, want %llu, have %llu", em->start,
499 offset = em->start + em->len;
502 /* The next 3 are a half written prealloc extent */
503 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
505 test_err("got an error when we shouldn't have");
508 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
509 test_err("expected a real extent, got %llu", em->block_start);
512 if (em->start != offset || em->len != sectorsize) {
514 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
515 offset, sectorsize, em->start, em->len);
518 if (em->flags != prealloc_only) {
519 test_err("unexpected flags set, want %lu have %lu",
520 prealloc_only, em->flags);
523 if (em->orig_start != em->start) {
524 test_err("wrong orig offset, want %llu, have %llu", em->start,
528 disk_bytenr = em->block_start;
529 orig_start = em->start;
530 offset = em->start + em->len;
533 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
535 test_err("got an error when we shouldn't have");
538 if (em->block_start >= EXTENT_MAP_HOLE) {
539 test_err("expected a real extent, got %llu", em->block_start);
542 if (em->start != offset || em->len != sectorsize) {
544 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
545 offset, sectorsize, em->start, em->len);
548 if (em->flags != 0) {
549 test_err("unexpected flags set, want 0 have %lu", em->flags);
552 if (em->orig_start != orig_start) {
553 test_err("unexpected orig offset, wanted %llu, have %llu",
554 orig_start, em->orig_start);
557 if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
558 test_err("unexpected block start, wanted %llu, have %llu",
559 disk_bytenr + (em->start - em->orig_start),
563 offset = em->start + em->len;
566 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
568 test_err("got an error when we shouldn't have");
571 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
572 test_err("expected a real extent, got %llu", em->block_start);
575 if (em->start != offset || em->len != 2 * sectorsize) {
577 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
578 offset, 2 * sectorsize, em->start, em->len);
581 if (em->flags != prealloc_only) {
582 test_err("unexpected flags set, want %lu have %lu",
583 prealloc_only, em->flags);
586 if (em->orig_start != orig_start) {
587 test_err("wrong orig offset, want %llu, have %llu", orig_start,
591 if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
592 test_err("unexpected block start, wanted %llu, have %llu",
593 disk_bytenr + (em->start - em->orig_start),
597 offset = em->start + em->len;
600 /* Now for the compressed extent */
601 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
603 test_err("got an error when we shouldn't have");
606 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
607 test_err("expected a real extent, got %llu", em->block_start);
610 if (em->start != offset || em->len != 2 * sectorsize) {
612 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
613 offset, 2 * sectorsize, em->start, em->len);
616 if (em->flags != compressed_only) {
617 test_err("unexpected flags set, want %lu have %lu",
618 compressed_only, em->flags);
621 if (em->orig_start != em->start) {
622 test_err("wrong orig offset, want %llu, have %llu",
623 em->start, em->orig_start);
626 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
627 test_err("unexpected compress type, wanted %d, got %d",
628 BTRFS_COMPRESS_ZLIB, em->compress_type);
631 offset = em->start + em->len;
634 /* Split compressed extent */
635 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
637 test_err("got an error when we shouldn't have");
640 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
641 test_err("expected a real extent, got %llu", em->block_start);
644 if (em->start != offset || em->len != sectorsize) {
646 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
647 offset, sectorsize, em->start, em->len);
650 if (em->flags != compressed_only) {
651 test_err("unexpected flags set, want %lu have %lu",
652 compressed_only, em->flags);
655 if (em->orig_start != em->start) {
656 test_err("wrong orig offset, want %llu, have %llu",
657 em->start, em->orig_start);
660 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
661 test_err("unexpected compress type, wanted %d, got %d",
662 BTRFS_COMPRESS_ZLIB, em->compress_type);
665 disk_bytenr = em->block_start;
666 orig_start = em->start;
667 offset = em->start + em->len;
670 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
672 test_err("got an error when we shouldn't have");
675 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
676 test_err("expected a real extent, got %llu", em->block_start);
679 if (em->start != offset || em->len != sectorsize) {
681 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
682 offset, sectorsize, em->start, em->len);
685 if (em->flags != 0) {
686 test_err("unexpected flags set, want 0 have %lu", em->flags);
689 if (em->orig_start != em->start) {
690 test_err("wrong orig offset, want %llu, have %llu", em->start,
694 offset = em->start + em->len;
697 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
699 test_err("got an error when we shouldn't have");
702 if (em->block_start != disk_bytenr) {
703 test_err("block start does not match, want %llu got %llu",
704 disk_bytenr, em->block_start);
707 if (em->start != offset || em->len != 2 * sectorsize) {
709 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
710 offset, 2 * sectorsize, em->start, em->len);
713 if (em->flags != compressed_only) {
714 test_err("unexpected flags set, want %lu have %lu",
715 compressed_only, em->flags);
718 if (em->orig_start != orig_start) {
719 test_err("wrong orig offset, want %llu, have %llu",
720 em->start, orig_start);
723 if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
724 test_err("unexpected compress type, wanted %d, got %d",
725 BTRFS_COMPRESS_ZLIB, em->compress_type);
728 offset = em->start + em->len;
731 /* A hole between regular extents but no hole extent */
732 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset + 6,
735 test_err("got an error when we shouldn't have");
738 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
739 test_err("expected a real extent, got %llu", em->block_start);
742 if (em->start != offset || em->len != sectorsize) {
744 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
745 offset, sectorsize, em->start, em->len);
748 if (em->flags != 0) {
749 test_err("unexpected flags set, want 0 have %lu", em->flags);
752 if (em->orig_start != em->start) {
753 test_err("wrong orig offset, want %llu, have %llu", em->start,
757 offset = em->start + em->len;
760 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, SZ_4M, 0);
762 test_err("got an error when we shouldn't have");
765 if (em->block_start != EXTENT_MAP_HOLE) {
766 test_err("expected a hole extent, got %llu", em->block_start);
770 * Currently we just return a length that we requested rather than the
771 * length of the actual hole, if this changes we'll have to change this
774 if (em->start != offset || em->len != 3 * sectorsize) {
776 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
777 offset, 3 * sectorsize, em->start, em->len);
780 if (em->flags != vacancy_only) {
781 test_err("unexpected flags set, want %lu have %lu",
782 vacancy_only, em->flags);
785 if (em->orig_start != em->start) {
786 test_err("wrong orig offset, want %llu, have %llu", em->start,
790 offset = em->start + em->len;
793 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
795 test_err("got an error when we shouldn't have");
798 if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
799 test_err("expected a real extent, got %llu", em->block_start);
802 if (em->start != offset || em->len != sectorsize) {
804 "unexpected extent wanted start %llu len %u, got start %llu len %llu",
805 offset, sectorsize, em->start, em->len);
808 if (em->flags != 0) {
809 test_err("unexpected flags set, want 0 have %lu", em->flags);
812 if (em->orig_start != em->start) {
813 test_err("wrong orig offset, want %llu, have %llu", em->start,
822 btrfs_free_dummy_root(root);
823 btrfs_free_dummy_fs_info(fs_info);
827 static int test_hole_first(u32 sectorsize, u32 nodesize)
829 struct btrfs_fs_info *fs_info = NULL;
830 struct inode *inode = NULL;
831 struct btrfs_root *root = NULL;
832 struct extent_map *em = NULL;
835 inode = btrfs_new_test_inode();
837 test_err("couldn't allocate inode");
841 BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
842 BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
843 BTRFS_I(inode)->location.offset = 0;
845 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
847 test_err("couldn't allocate dummy fs info");
851 root = btrfs_alloc_dummy_root(fs_info);
853 test_err("couldn't allocate root");
857 root->node = alloc_dummy_extent_buffer(fs_info, nodesize);
859 test_err("couldn't allocate dummy buffer");
863 extent_buffer_get(root->node);
864 btrfs_set_header_nritems(root->node, 0);
865 btrfs_set_header_level(root->node, 0);
866 BTRFS_I(inode)->root = root;
870 * Need a blank inode item here just so we don't confuse
873 insert_inode_item_key(root);
874 insert_extent(root, sectorsize, sectorsize, sectorsize, 0, sectorsize,
875 sectorsize, BTRFS_FILE_EXTENT_REG, 0, 1);
876 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, 2 * sectorsize, 0);
878 test_err("got an error when we shouldn't have");
881 if (em->block_start != EXTENT_MAP_HOLE) {
882 test_err("expected a hole, got %llu", em->block_start);
885 if (em->start != 0 || em->len != sectorsize) {
887 "unexpected extent wanted start 0 len %u, got start %llu len %llu",
888 sectorsize, em->start, em->len);
891 if (em->flags != vacancy_only) {
892 test_err("wrong flags, wanted %lu, have %lu", vacancy_only,
898 em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, sectorsize,
901 test_err("got an error when we shouldn't have");
904 if (em->block_start != sectorsize) {
905 test_err("expected a real extent, got %llu", em->block_start);
908 if (em->start != sectorsize || em->len != sectorsize) {
910 "unexpected extent wanted start %u len %u, got start %llu len %llu",
911 sectorsize, sectorsize, em->start, em->len);
914 if (em->flags != 0) {
915 test_err("unexpected flags set, wanted 0 got %lu",
924 btrfs_free_dummy_root(root);
925 btrfs_free_dummy_fs_info(fs_info);
929 static int test_extent_accounting(u32 sectorsize, u32 nodesize)
931 struct btrfs_fs_info *fs_info = NULL;
932 struct inode *inode = NULL;
933 struct btrfs_root *root = NULL;
936 inode = btrfs_new_test_inode();
938 test_err("couldn't allocate inode");
942 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
944 test_err("couldn't allocate dummy fs info");
948 root = btrfs_alloc_dummy_root(fs_info);
950 test_err("couldn't allocate root");
954 BTRFS_I(inode)->root = root;
955 btrfs_test_inode_set_ops(inode);
957 /* [BTRFS_MAX_EXTENT_SIZE] */
958 ret = btrfs_set_extent_delalloc(inode, 0, BTRFS_MAX_EXTENT_SIZE - 1, 0,
961 test_err("btrfs_set_extent_delalloc returned %d", ret);
964 if (BTRFS_I(inode)->outstanding_extents != 1) {
966 test_err("miscount, wanted 1, got %u",
967 BTRFS_I(inode)->outstanding_extents);
971 /* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
972 ret = btrfs_set_extent_delalloc(inode, BTRFS_MAX_EXTENT_SIZE,
973 BTRFS_MAX_EXTENT_SIZE + sectorsize - 1,
976 test_err("btrfs_set_extent_delalloc returned %d", ret);
979 if (BTRFS_I(inode)->outstanding_extents != 2) {
981 test_err("miscount, wanted 2, got %u",
982 BTRFS_I(inode)->outstanding_extents);
986 /* [BTRFS_MAX_EXTENT_SIZE/2][sectorsize HOLE][the rest] */
987 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
988 BTRFS_MAX_EXTENT_SIZE >> 1,
989 (BTRFS_MAX_EXTENT_SIZE >> 1) + sectorsize - 1,
990 EXTENT_DELALLOC | EXTENT_DIRTY |
991 EXTENT_UPTODATE, 0, 0, NULL);
993 test_err("clear_extent_bit returned %d", ret);
996 if (BTRFS_I(inode)->outstanding_extents != 2) {
998 test_err("miscount, wanted 2, got %u",
999 BTRFS_I(inode)->outstanding_extents);
1003 /* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
1004 ret = btrfs_set_extent_delalloc(inode, BTRFS_MAX_EXTENT_SIZE >> 1,
1005 (BTRFS_MAX_EXTENT_SIZE >> 1)
1009 test_err("btrfs_set_extent_delalloc returned %d", ret);
1012 if (BTRFS_I(inode)->outstanding_extents != 2) {
1014 test_err("miscount, wanted 2, got %u",
1015 BTRFS_I(inode)->outstanding_extents);
1020 * [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize HOLE][BTRFS_MAX_EXTENT_SIZE+sectorsize]
1022 ret = btrfs_set_extent_delalloc(inode,
1023 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize,
1024 (BTRFS_MAX_EXTENT_SIZE << 1) + 3 * sectorsize - 1,
1027 test_err("btrfs_set_extent_delalloc returned %d", ret);
1030 if (BTRFS_I(inode)->outstanding_extents != 4) {
1032 test_err("miscount, wanted 4, got %u",
1033 BTRFS_I(inode)->outstanding_extents);
1038 * [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize][BTRFS_MAX_EXTENT_SIZE+sectorsize]
1040 ret = btrfs_set_extent_delalloc(inode,
1041 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1042 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, 0, NULL, 0);
1044 test_err("btrfs_set_extent_delalloc returned %d", ret);
1047 if (BTRFS_I(inode)->outstanding_extents != 3) {
1049 test_err("miscount, wanted 3, got %u",
1050 BTRFS_I(inode)->outstanding_extents);
1054 /* [BTRFS_MAX_EXTENT_SIZE+4k][4K HOLE][BTRFS_MAX_EXTENT_SIZE+4k] */
1055 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
1056 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1057 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1,
1058 EXTENT_DIRTY | EXTENT_DELALLOC |
1059 EXTENT_UPTODATE, 0, 0, NULL);
1061 test_err("clear_extent_bit returned %d", ret);
1064 if (BTRFS_I(inode)->outstanding_extents != 4) {
1066 test_err("miscount, wanted 4, got %u",
1067 BTRFS_I(inode)->outstanding_extents);
1072 * Refill the hole again just for good measure, because I thought it
1073 * might fail and I'd rather satisfy my paranoia at this point.
1075 ret = btrfs_set_extent_delalloc(inode,
1076 BTRFS_MAX_EXTENT_SIZE + sectorsize,
1077 BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, 0, NULL, 0);
1079 test_err("btrfs_set_extent_delalloc returned %d", ret);
1082 if (BTRFS_I(inode)->outstanding_extents != 3) {
1084 test_err("miscount, wanted 3, got %u",
1085 BTRFS_I(inode)->outstanding_extents);
1090 ret = clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
1091 EXTENT_DIRTY | EXTENT_DELALLOC |
1092 EXTENT_UPTODATE, 0, 0, NULL);
1094 test_err("clear_extent_bit returned %d", ret);
1097 if (BTRFS_I(inode)->outstanding_extents) {
1099 test_err("miscount, wanted 0, got %u",
1100 BTRFS_I(inode)->outstanding_extents);
1106 clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
1107 EXTENT_DIRTY | EXTENT_DELALLOC |
1108 EXTENT_UPTODATE, 0, 0, NULL);
1110 btrfs_free_dummy_root(root);
1111 btrfs_free_dummy_fs_info(fs_info);
1115 int btrfs_test_inodes(u32 sectorsize, u32 nodesize)
1119 set_bit(EXTENT_FLAG_COMPRESSED, &compressed_only);
1120 set_bit(EXTENT_FLAG_PREALLOC, &prealloc_only);
1122 test_msg("running btrfs_get_extent tests");
1123 ret = test_btrfs_get_extent(sectorsize, nodesize);
1126 test_msg("running hole first btrfs_get_extent test");
1127 ret = test_hole_first(sectorsize, nodesize);
1130 test_msg("running outstanding_extents tests");
1131 return test_extent_accounting(sectorsize, nodesize);