fs/btrfs/tests/inode-tests.c

   1 /*
   2  * Copyright (C) 2013 Fusion IO.  All rights reserved.
   3  *
   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.
   7  *
   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.
  12  *
  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.
  17  */
  18
  19 #include <linux/types.h>
  20 #include "btrfs-tests.h"
  21 #include "../ctree.h"
  22 #include "../btrfs_inode.h"
  23 #include "../disk-io.h"
  24 #include "../extent_io.h"
  25 #include "../volumes.h"
  26 #include "../compression.h"
  27
  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)
  31 {
  32         struct btrfs_path path;
  33         struct btrfs_file_extent_item *fi;
  34         struct extent_buffer *leaf = root->node;
  35         struct btrfs_key key;
  36         u32 value_len = sizeof(struct btrfs_file_extent_item);
  37
  38         if (type == BTRFS_FILE_EXTENT_INLINE)
  39                 value_len += len;
  40         memset(&path, 0, sizeof(path));
  41
  42         path.nodes[0] = leaf;
  43         path.slots[0] = slot;
  44
  45         key.objectid = BTRFS_FIRST_FREE_OBJECTID;
  46         key.type = BTRFS_EXTENT_DATA_KEY;
  47         key.offset = start;
  48
  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);
  62 }
  63
  64 static void insert_inode_item_key(struct btrfs_root *root)
  65 {
  66         struct btrfs_path path;
  67         struct extent_buffer *leaf = root->node;
  68         struct btrfs_key key;
  69         u32 value_len = 0;
  70
  71         memset(&path, 0, sizeof(path));
  72
  73         path.nodes[0] = leaf;
  74         path.slots[0] = 0;
  75
  76         key.objectid = BTRFS_INODE_ITEM_KEY;
  77         key.type = BTRFS_INODE_ITEM_KEY;
  78         key.offset = 0;
  79
  80         setup_items_for_insert(root, &path, &key, &value_len, value_len,
  81                                value_len + sizeof(struct btrfs_item), 1);
  82 }
  83
  84 /*
  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)
  89  *
  90  * [0 - 5][5 -  6][     6 - 4096     ][ 4096 - 4100][4100 - 8195][8195 - 12291]
  91  * [hole ][inline][hole but no extent][  hole   ][   regular ][regular1 split]
  92  *
  93  * [12291 - 16387][16387 - 24579][24579 - 28675][ 28675 - 32771][32771 - 36867 ]
  94  * [    hole    ][regular1 split][   prealloc ][   prealloc1  ][prealloc1 written]
  95  *
  96  * [36867 - 45059][45059 - 53251][53251 - 57347][57347 - 61443][61443- 69635]
  97  * [  prealloc1  ][ compressed  ][ compressed1 ][    regular  ][ compressed1]
  98  *
  99  * [69635-73731][   73731 - 86019   ][86019-90115]
 100  * [  regular  ][ hole but no extent][  regular  ]
 101  */
 102 static void setup_file_extents(struct btrfs_root *root, u32 sectorsize)
 103 {
 104         int slot = 0;
 105         u64 disk_bytenr = SZ_1M;
 106         u64 offset = 0;
 107
 108         /* First we want a hole */
 109         insert_extent(root, offset, 5, 5, 0, 0, 0, BTRFS_FILE_EXTENT_REG, 0,
 110                       slot);
 111         slot++;
 112         offset += 5;
 113
 114         /*
 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.
 119          */
 120         insert_extent(root, offset, 1, 1, 0, 0, 0, BTRFS_FILE_EXTENT_INLINE, 0,
 121                       slot);
 122         slot++;
 123         offset = sectorsize;
 124
 125         /* Now another hole */
 126         insert_extent(root, offset, 4, 4, 0, 0, 0, BTRFS_FILE_EXTENT_REG, 0,
 127                       slot);
 128         slot++;
 129         offset += 4;
 130
 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);
 134         slot++;
 135         disk_bytenr += sectorsize;
 136         offset += sectorsize - 1;
 137
 138         /*
 139          * Now for 3 extents that were split from a hole punch so we test
 140          * offsets properly.
 141          */
 142         insert_extent(root, offset, sectorsize, 4 * sectorsize, 0, disk_bytenr,
 143                       4 * sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
 144         slot++;
 145         offset += sectorsize;
 146         insert_extent(root, offset, sectorsize, sectorsize, 0, 0, 0,
 147                       BTRFS_FILE_EXTENT_REG, 0, slot);
 148         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);
 153         slot++;
 154         offset += 2 * sectorsize;
 155         disk_bytenr += 4 * sectorsize;
 156
 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);
 160         slot++;
 161         offset += sectorsize;
 162
 163         /*
 164          * We want to jack up disk_bytenr a little more so the em stuff doesn't
 165          * merge our records.
 166          */
 167         disk_bytenr += 2 * sectorsize;
 168
 169         /*
 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.
 173          */
 174         insert_extent(root, offset, sectorsize, 4 * sectorsize, 0, disk_bytenr,
 175                       4 * sectorsize, BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
 176         slot++;
 177         offset += sectorsize;
 178         insert_extent(root, offset, sectorsize, 4 * sectorsize, sectorsize,
 179                       disk_bytenr, 4 * sectorsize, BTRFS_FILE_EXTENT_REG, 0,
 180                       slot);
 181         slot++;
 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);
 186         slot++;
 187         offset += 2 * sectorsize;
 188         disk_bytenr += 4 * sectorsize;
 189
 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);
 194         slot++;
 195         offset += 2 * sectorsize;
 196         /* No merges */
 197         disk_bytenr += 2 * sectorsize;
 198
 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);
 203         slot++;
 204         offset += sectorsize;
 205         insert_extent(root, offset, sectorsize, sectorsize, 0,
 206                       disk_bytenr + sectorsize, sectorsize,
 207                       BTRFS_FILE_EXTENT_REG, 0, slot);
 208         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);
 213         slot++;
 214         offset += 2 * sectorsize;
 215         disk_bytenr += 2 * sectorsize;
 216
 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);
 220         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);
 225 }
 226
 227 static unsigned long prealloc_only = 0;
 228 static unsigned long compressed_only = 0;
 229 static unsigned long vacancy_only = 0;
 230
 231 static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
 232 {
 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;
 237         u64 orig_start;
 238         u64 disk_bytenr;
 239         u64 offset;
 240         int ret = -ENOMEM;
 241
 242         inode = btrfs_new_test_inode();
 243         if (!inode) {
 244                 test_msg("Couldn't allocate inode\n");
 245                 return ret;
 246         }
 247
 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;
 251
 252         fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
 253         if (!fs_info) {
 254                 test_msg("Couldn't allocate dummy fs info\n");
 255                 goto out;
 256         }
 257
 258         root = btrfs_alloc_dummy_root(fs_info);
 259         if (IS_ERR(root)) {
 260                 test_msg("Couldn't allocate root\n");
 261                 goto out;
 262         }
 263
 264         root->node = alloc_dummy_extent_buffer(fs_info, nodesize);
 265         if (!root->node) {
 266                 test_msg("Couldn't allocate dummy buffer\n");
 267                 goto out;
 268         }
 269
 270         /*
 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.
 273          */
 274         extent_buffer_get(root->node);
 275         btrfs_set_header_nritems(root->node, 0);
 276         btrfs_set_header_level(root->node, 0);
 277         ret = -EINVAL;
 278
 279         /* First with no extents */
 280         BTRFS_I(inode)->root = root;
 281         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, sectorsize, 0);
 282         if (IS_ERR(em)) {
 283                 em = NULL;
 284                 test_msg("Got an error when we shouldn't have\n");
 285                 goto out;
 286         }
 287         if (em->block_start != EXTENT_MAP_HOLE) {
 288                 test_msg("Expected a hole, got %llu\n", em->block_start);
 289                 goto out;
 290         }
 291         if (!test_bit(EXTENT_FLAG_VACANCY, &em->flags)) {
 292                 test_msg("Vacancy flag wasn't set properly\n");
 293                 goto out;
 294         }
 295         free_extent_map(em);
 296         btrfs_drop_extent_cache(BTRFS_I(inode), 0, (u64)-1, 0);
 297
 298         /*
 299          * All of the magic numbers are based on the mapping setup in
 300          * setup_file_extents, so if you change anything there you need to
 301          * update the comment and update the expected values below.
 302          */
 303         setup_file_extents(root, sectorsize);
 304
 305         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, (u64)-1, 0);
 306         if (IS_ERR(em)) {
 307                 test_msg("Got an error when we shouldn't have\n");
 308                 goto out;
 309         }
 310         if (em->block_start != EXTENT_MAP_HOLE) {
 311                 test_msg("Expected a hole, got %llu\n", em->block_start);
 312                 goto out;
 313         }
 314         if (em->start != 0 || em->len != 5) {
 315                 test_msg("Unexpected extent wanted start 0 len 5, got start "
 316                          "%llu len %llu\n", em->start, em->len);
 317                 goto out;
 318         }
 319         if (em->flags != 0) {
 320                 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
 321                 goto out;
 322         }
 323         offset = em->start + em->len;
 324         free_extent_map(em);
 325
 326         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
 327         if (IS_ERR(em)) {
 328                 test_msg("Got an error when we shouldn't have\n");
 329                 goto out;
 330         }
 331         if (em->block_start != EXTENT_MAP_INLINE) {
 332                 test_msg("Expected an inline, got %llu\n", em->block_start);
 333                 goto out;
 334         }
 335
 336         if (em->start != offset || em->len != (sectorsize - 5)) {
 337                 test_msg("Unexpected extent wanted start %llu len 1, got start "
 338                          "%llu len %llu\n", offset, em->start, em->len);
 339                 goto out;
 340         }
 341         if (em->flags != 0) {
 342                 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
 343                 goto out;
 344         }
 345         /*
 346          * We don't test anything else for inline since it doesn't get set
 347          * unless we have a page for it to write into.  Maybe we should change
 348          * this?
 349          */
 350         offset = em->start + em->len;
 351         free_extent_map(em);
 352
 353         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
 354         if (IS_ERR(em)) {
 355                 test_msg("Got an error when we shouldn't have\n");
 356                 goto out;
 357         }
 358         if (em->block_start != EXTENT_MAP_HOLE) {
 359                 test_msg("Expected a hole, got %llu\n", em->block_start);
 360                 goto out;
 361         }
 362         if (em->start != offset || em->len != 4) {
 363                 test_msg("Unexpected extent wanted start %llu len 4, got start "
 364                          "%llu len %llu\n", offset, em->start, em->len);
 365                 goto out;
 366         }
 367         if (em->flags != 0) {
 368                 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
 369                 goto out;
 370         }
 371         offset = em->start + em->len;
 372         free_extent_map(em);
 373
 374         /* Regular extent */
 375         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
 376         if (IS_ERR(em)) {
 377                 test_msg("Got an error when we shouldn't have\n");
 378                 goto out;
 379         }
 380         if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
 381                 test_msg("Expected a real extent, got %llu\n", em->block_start);
 382                 goto out;
 383         }
 384         if (em->start != offset || em->len != sectorsize - 1) {
 385                 test_msg("Unexpected extent wanted start %llu len 4095, got "
 386                          "start %llu len %llu\n", offset, em->start, em->len);
 387                 goto out;
 388         }
 389         if (em->flags != 0) {
 390                 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
 391                 goto out;
 392         }
 393         if (em->orig_start != em->start) {
 394                 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
 395                          em->orig_start);
 396                 goto out;
 397         }
 398         offset = em->start + em->len;
 399         free_extent_map(em);
 400
 401         /* The next 3 are split extents */
 402         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
 403         if (IS_ERR(em)) {
 404                 test_msg("Got an error when we shouldn't have\n");
 405                 goto out;
 406         }
 407         if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
 408                 test_msg("Expected a real extent, got %llu\n", em->block_start);
 409                 goto out;
 410         }
 411         if (em->start != offset || em->len != sectorsize) {
 412                 test_msg("Unexpected extent start %llu len %u, "
 413                         "got start %llu len %llu\n",
 414                         offset, sectorsize, em->start, em->len);
 415                 goto out;
 416         }
 417         if (em->flags != 0) {
 418                 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
 419                 goto out;
 420         }
 421         if (em->orig_start != em->start) {
 422                 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
 423                          em->orig_start);
 424                 goto out;
 425         }
 426         disk_bytenr = em->block_start;
 427         orig_start = em->start;
 428         offset = em->start + em->len;
 429         free_extent_map(em);
 430
 431         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
 432         if (IS_ERR(em)) {
 433                 test_msg("Got an error when we shouldn't have\n");
 434                 goto out;
 435         }
 436         if (em->block_start != EXTENT_MAP_HOLE) {
 437                 test_msg("Expected a hole, got %llu\n", em->block_start);
 438                 goto out;
 439         }
 440         if (em->start != offset || em->len != sectorsize) {
 441                 test_msg("Unexpected extent wanted start %llu len %u, "
 442                         "got start %llu len %llu\n",
 443                         offset, sectorsize, em->start, em->len);
 444                 goto out;
 445         }
 446         if (em->flags != 0) {
 447                 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
 448                 goto out;
 449         }
 450         offset = em->start + em->len;
 451         free_extent_map(em);
 452
 453         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
 454         if (IS_ERR(em)) {
 455                 test_msg("Got an error when we shouldn't have\n");
 456                 goto out;
 457         }
 458         if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
 459                 test_msg("Expected a real extent, got %llu\n", em->block_start);
 460                 goto out;
 461         }
 462         if (em->start != offset || em->len != 2 * sectorsize) {
 463                 test_msg("Unexpected extent wanted start %llu len %u, "
 464                         "got start %llu len %llu\n",
 465                         offset, 2 * sectorsize, em->start, em->len);
 466                 goto out;
 467         }
 468         if (em->flags != 0) {
 469                 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
 470                 goto out;
 471         }
 472         if (em->orig_start != orig_start) {
 473                 test_msg("Wrong orig offset, want %llu, have %llu\n",
 474                          orig_start, em->orig_start);
 475                 goto out;
 476         }
 477         disk_bytenr += (em->start - orig_start);
 478         if (em->block_start != disk_bytenr) {
 479                 test_msg("Wrong block start, want %llu, have %llu\n",
 480                          disk_bytenr, em->block_start);
 481                 goto out;
 482         }
 483         offset = em->start + em->len;
 484         free_extent_map(em);
 485
 486         /* Prealloc extent */
 487         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
 488         if (IS_ERR(em)) {
 489                 test_msg("Got an error when we shouldn't have\n");
 490                 goto out;
 491         }
 492         if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
 493                 test_msg("Expected a real extent, got %llu\n", em->block_start);
 494                 goto out;
 495         }
 496         if (em->start != offset || em->len != sectorsize) {
 497                 test_msg("Unexpected extent wanted start %llu len %u, "
 498                         "got start %llu len %llu\n",
 499                         offset, sectorsize, em->start, em->len);
 500                 goto out;
 501         }
 502         if (em->flags != prealloc_only) {
 503                 test_msg("Unexpected flags set, want %lu have %lu\n",
 504                          prealloc_only, em->flags);
 505                 goto out;
 506         }
 507         if (em->orig_start != em->start) {
 508                 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
 509                          em->orig_start);
 510                 goto out;
 511         }
 512         offset = em->start + em->len;
 513         free_extent_map(em);
 514
 515         /* The next 3 are a half written prealloc extent */
 516         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
 517         if (IS_ERR(em)) {
 518                 test_msg("Got an error when we shouldn't have\n");
 519                 goto out;
 520         }
 521         if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
 522                 test_msg("Expected a real extent, got %llu\n", em->block_start);
 523                 goto out;
 524         }
 525         if (em->start != offset || em->len != sectorsize) {
 526                 test_msg("Unexpected extent wanted start %llu len %u, "
 527                         "got start %llu len %llu\n",
 528                         offset, sectorsize, em->start, em->len);
 529                 goto out;
 530         }
 531         if (em->flags != prealloc_only) {
 532                 test_msg("Unexpected flags set, want %lu have %lu\n",
 533                          prealloc_only, em->flags);
 534                 goto out;
 535         }
 536         if (em->orig_start != em->start) {
 537                 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
 538                          em->orig_start);
 539                 goto out;
 540         }
 541         disk_bytenr = em->block_start;
 542         orig_start = em->start;
 543         offset = em->start + em->len;
 544         free_extent_map(em);
 545
 546         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
 547         if (IS_ERR(em)) {
 548                 test_msg("Got an error when we shouldn't have\n");
 549                 goto out;
 550         }
 551         if (em->block_start >= EXTENT_MAP_HOLE) {
 552                 test_msg("Expected a real extent, got %llu\n", em->block_start);
 553                 goto out;
 554         }
 555         if (em->start != offset || em->len != sectorsize) {
 556                 test_msg("Unexpected extent wanted start %llu len %u, "
 557                         "got start %llu len %llu\n",
 558                         offset, sectorsize, em->start, em->len);
 559                 goto out;
 560         }
 561         if (em->flags != 0) {
 562                 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
 563                 goto out;
 564         }
 565         if (em->orig_start != orig_start) {
 566                 test_msg("Unexpected orig offset, wanted %llu, have %llu\n",
 567                          orig_start, em->orig_start);
 568                 goto out;
 569         }
 570         if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
 571                 test_msg("Unexpected block start, wanted %llu, have %llu\n",
 572                          disk_bytenr + (em->start - em->orig_start),
 573                          em->block_start);
 574                 goto out;
 575         }
 576         offset = em->start + em->len;
 577         free_extent_map(em);
 578
 579         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
 580         if (IS_ERR(em)) {
 581                 test_msg("Got an error when we shouldn't have\n");
 582                 goto out;
 583         }
 584         if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
 585                 test_msg("Expected a real extent, got %llu\n", em->block_start);
 586                 goto out;
 587         }
 588         if (em->start != offset || em->len != 2 * sectorsize) {
 589                 test_msg("Unexpected extent wanted start %llu len %u, "
 590                         "got start %llu len %llu\n",
 591                         offset, 2 * sectorsize, em->start, em->len);
 592                 goto out;
 593         }
 594         if (em->flags != prealloc_only) {
 595                 test_msg("Unexpected flags set, want %lu have %lu\n",
 596                          prealloc_only, em->flags);
 597                 goto out;
 598         }
 599         if (em->orig_start != orig_start) {
 600                 test_msg("Wrong orig offset, want %llu, have %llu\n", orig_start,
 601                          em->orig_start);
 602                 goto out;
 603         }
 604         if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
 605                 test_msg("Unexpected block start, wanted %llu, have %llu\n",
 606                          disk_bytenr + (em->start - em->orig_start),
 607                          em->block_start);
 608                 goto out;
 609         }
 610         offset = em->start + em->len;
 611         free_extent_map(em);
 612
 613         /* Now for the compressed extent */
 614         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
 615         if (IS_ERR(em)) {
 616                 test_msg("Got an error when we shouldn't have\n");
 617                 goto out;
 618         }
 619         if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
 620                 test_msg("Expected a real extent, got %llu\n", em->block_start);
 621                 goto out;
 622         }
 623         if (em->start != offset || em->len != 2 * sectorsize) {
 624                 test_msg("Unexpected extent wanted start %llu len %u,"
 625                         "got start %llu len %llu\n",
 626                         offset, 2 * sectorsize, em->start, em->len);
 627                 goto out;
 628         }
 629         if (em->flags != compressed_only) {
 630                 test_msg("Unexpected flags set, want %lu have %lu\n",
 631                          compressed_only, em->flags);
 632                 goto out;
 633         }
 634         if (em->orig_start != em->start) {
 635                 test_msg("Wrong orig offset, want %llu, have %llu\n",
 636                          em->start, em->orig_start);
 637                 goto out;
 638         }
 639         if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
 640                 test_msg("Unexpected compress type, wanted %d, got %d\n",
 641                          BTRFS_COMPRESS_ZLIB, em->compress_type);
 642                 goto out;
 643         }
 644         offset = em->start + em->len;
 645         free_extent_map(em);
 646
 647         /* Split compressed extent */
 648         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
 649         if (IS_ERR(em)) {
 650                 test_msg("Got an error when we shouldn't have\n");
 651                 goto out;
 652         }
 653         if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
 654                 test_msg("Expected a real extent, got %llu\n", em->block_start);
 655                 goto out;
 656         }
 657         if (em->start != offset || em->len != sectorsize) {
 658                 test_msg("Unexpected extent wanted start %llu len %u,"
 659                         "got start %llu len %llu\n",
 660                         offset, sectorsize, em->start, em->len);
 661                 goto out;
 662         }
 663         if (em->flags != compressed_only) {
 664                 test_msg("Unexpected flags set, want %lu have %lu\n",
 665                          compressed_only, em->flags);
 666                 goto out;
 667         }
 668         if (em->orig_start != em->start) {
 669                 test_msg("Wrong orig offset, want %llu, have %llu\n",
 670                          em->start, em->orig_start);
 671                 goto out;
 672         }
 673         if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
 674                 test_msg("Unexpected compress type, wanted %d, got %d\n",
 675                          BTRFS_COMPRESS_ZLIB, em->compress_type);
 676                 goto out;
 677         }
 678         disk_bytenr = em->block_start;
 679         orig_start = em->start;
 680         offset = em->start + em->len;
 681         free_extent_map(em);
 682
 683         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
 684         if (IS_ERR(em)) {
 685                 test_msg("Got an error when we shouldn't have\n");
 686                 goto out;
 687         }
 688         if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
 689                 test_msg("Expected a real extent, got %llu\n", em->block_start);
 690                 goto out;
 691         }
 692         if (em->start != offset || em->len != sectorsize) {
 693                 test_msg("Unexpected extent wanted start %llu len %u, "
 694                         "got start %llu len %llu\n",
 695                         offset, sectorsize, em->start, em->len);
 696                 goto out;
 697         }
 698         if (em->flags != 0) {
 699                 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
 700                 goto out;
 701         }
 702         if (em->orig_start != em->start) {
 703                 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
 704                          em->orig_start);
 705                 goto out;
 706         }
 707         offset = em->start + em->len;
 708         free_extent_map(em);
 709
 710         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
 711         if (IS_ERR(em)) {
 712                 test_msg("Got an error when we shouldn't have\n");
 713                 goto out;
 714         }
 715         if (em->block_start != disk_bytenr) {
 716                 test_msg("Block start does not match, want %llu got %llu\n",
 717                          disk_bytenr, em->block_start);
 718                 goto out;
 719         }
 720         if (em->start != offset || em->len != 2 * sectorsize) {
 721                 test_msg("Unexpected extent wanted start %llu len %u, "
 722                         "got start %llu len %llu\n",
 723                         offset, 2 * sectorsize, em->start, em->len);
 724                 goto out;
 725         }
 726         if (em->flags != compressed_only) {
 727                 test_msg("Unexpected flags set, want %lu have %lu\n",
 728                          compressed_only, em->flags);
 729                 goto out;
 730         }
 731         if (em->orig_start != orig_start) {
 732                 test_msg("Wrong orig offset, want %llu, have %llu\n",
 733                          em->start, orig_start);
 734                 goto out;
 735         }
 736         if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
 737                 test_msg("Unexpected compress type, wanted %d, got %d\n",
 738                          BTRFS_COMPRESS_ZLIB, em->compress_type);
 739                 goto out;
 740         }
 741         offset = em->start + em->len;
 742         free_extent_map(em);
 743
 744         /* A hole between regular extents but no hole extent */
 745         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset + 6,
 746                         sectorsize, 0);
 747         if (IS_ERR(em)) {
 748                 test_msg("Got an error when we shouldn't have\n");
 749                 goto out;
 750         }
 751         if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
 752                 test_msg("Expected a real extent, got %llu\n", em->block_start);
 753                 goto out;
 754         }
 755         if (em->start != offset || em->len != sectorsize) {
 756                 test_msg("Unexpected extent wanted start %llu len %u, "
 757                         "got start %llu len %llu\n",
 758                         offset, sectorsize, em->start, em->len);
 759                 goto out;
 760         }
 761         if (em->flags != 0) {
 762                 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
 763                 goto out;
 764         }
 765         if (em->orig_start != em->start) {
 766                 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
 767                          em->orig_start);
 768                 goto out;
 769         }
 770         offset = em->start + em->len;
 771         free_extent_map(em);
 772
 773         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, 4096 * 1024, 0);
 774         if (IS_ERR(em)) {
 775                 test_msg("Got an error when we shouldn't have\n");
 776                 goto out;
 777         }
 778         if (em->block_start != EXTENT_MAP_HOLE) {
 779                 test_msg("Expected a hole extent, got %llu\n", em->block_start);
 780                 goto out;
 781         }
 782         /*
 783          * Currently we just return a length that we requested rather than the
 784          * length of the actual hole, if this changes we'll have to change this
 785          * test.
 786          */
 787         if (em->start != offset || em->len != 3 * sectorsize) {
 788                 test_msg("Unexpected extent wanted start %llu len %u, "
 789                         "got start %llu len %llu\n",
 790                         offset, 3 * sectorsize, em->start, em->len);
 791                 goto out;
 792         }
 793         if (em->flags != vacancy_only) {
 794                 test_msg("Unexpected flags set, want %lu have %lu\n",
 795                          vacancy_only, em->flags);
 796                 goto out;
 797         }
 798         if (em->orig_start != em->start) {
 799                 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
 800                          em->orig_start);
 801                 goto out;
 802         }
 803         offset = em->start + em->len;
 804         free_extent_map(em);
 805
 806         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
 807         if (IS_ERR(em)) {
 808                 test_msg("Got an error when we shouldn't have\n");
 809                 goto out;
 810         }
 811         if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
 812                 test_msg("Expected a real extent, got %llu\n", em->block_start);
 813                 goto out;
 814         }
 815         if (em->start != offset || em->len != sectorsize) {
 816                 test_msg("Unexpected extent wanted start %llu len %u,"
 817                         "got start %llu len %llu\n",
 818                         offset, sectorsize, em->start, em->len);
 819                 goto out;
 820         }
 821         if (em->flags != 0) {
 822                 test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
 823                 goto out;
 824         }
 825         if (em->orig_start != em->start) {
 826                 test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
 827                          em->orig_start);
 828                 goto out;
 829         }
 830         ret = 0;
 831 out:
 832         if (!IS_ERR(em))
 833                 free_extent_map(em);
 834         iput(inode);
 835         btrfs_free_dummy_root(root);
 836         btrfs_free_dummy_fs_info(fs_info);
 837         return ret;
 838 }
 839
 840 static int test_hole_first(u32 sectorsize, u32 nodesize)
 841 {
 842         struct btrfs_fs_info *fs_info = NULL;
 843         struct inode *inode = NULL;
 844         struct btrfs_root *root = NULL;
 845         struct extent_map *em = NULL;
 846         int ret = -ENOMEM;
 847
 848         inode = btrfs_new_test_inode();
 849         if (!inode) {
 850                 test_msg("Couldn't allocate inode\n");
 851                 return ret;
 852         }
 853
 854         BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
 855         BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
 856         BTRFS_I(inode)->location.offset = 0;
 857
 858         fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
 859         if (!fs_info) {
 860                 test_msg("Couldn't allocate dummy fs info\n");
 861                 goto out;
 862         }
 863
 864         root = btrfs_alloc_dummy_root(fs_info);
 865         if (IS_ERR(root)) {
 866                 test_msg("Couldn't allocate root\n");
 867                 goto out;
 868         }
 869
 870         root->node = alloc_dummy_extent_buffer(fs_info, nodesize);
 871         if (!root->node) {
 872                 test_msg("Couldn't allocate dummy buffer\n");
 873                 goto out;
 874         }
 875
 876         extent_buffer_get(root->node);
 877         btrfs_set_header_nritems(root->node, 0);
 878         btrfs_set_header_level(root->node, 0);
 879         BTRFS_I(inode)->root = root;
 880         ret = -EINVAL;
 881
 882         /*
 883          * Need a blank inode item here just so we don't confuse
 884          * btrfs_get_extent.
 885          */
 886         insert_inode_item_key(root);
 887         insert_extent(root, sectorsize, sectorsize, sectorsize, 0, sectorsize,
 888                       sectorsize, BTRFS_FILE_EXTENT_REG, 0, 1);
 889         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, 2 * sectorsize, 0);
 890         if (IS_ERR(em)) {
 891                 test_msg("Got an error when we shouldn't have\n");
 892                 goto out;
 893         }
 894         if (em->block_start != EXTENT_MAP_HOLE) {
 895                 test_msg("Expected a hole, got %llu\n", em->block_start);
 896                 goto out;
 897         }
 898         if (em->start != 0 || em->len != sectorsize) {
 899                 test_msg("Unexpected extent wanted start 0 len %u, "
 900                         "got start %llu len %llu\n",
 901                         sectorsize, em->start, em->len);
 902                 goto out;
 903         }
 904         if (em->flags != vacancy_only) {
 905                 test_msg("Wrong flags, wanted %lu, have %lu\n", vacancy_only,
 906                          em->flags);
 907                 goto out;
 908         }
 909         free_extent_map(em);
 910
 911         em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, sectorsize,
 912                         2 * sectorsize, 0);
 913         if (IS_ERR(em)) {
 914                 test_msg("Got an error when we shouldn't have\n");
 915                 goto out;
 916         }
 917         if (em->block_start != sectorsize) {
 918                 test_msg("Expected a real extent, got %llu\n", em->block_start);
 919                 goto out;
 920         }
 921         if (em->start != sectorsize || em->len != sectorsize) {
 922                 test_msg("Unexpected extent wanted start %u len %u, "
 923                         "got start %llu len %llu\n",
 924                         sectorsize, sectorsize, em->start, em->len);
 925                 goto out;
 926         }
 927         if (em->flags != 0) {
 928                 test_msg("Unexpected flags set, wanted 0 got %lu\n",
 929                          em->flags);
 930                 goto out;
 931         }
 932         ret = 0;
 933 out:
 934         if (!IS_ERR(em))
 935                 free_extent_map(em);
 936         iput(inode);
 937         btrfs_free_dummy_root(root);
 938         btrfs_free_dummy_fs_info(fs_info);
 939         return ret;
 940 }
 941
 942 static int test_extent_accounting(u32 sectorsize, u32 nodesize)
 943 {
 944         struct btrfs_fs_info *fs_info = NULL;
 945         struct inode *inode = NULL;
 946         struct btrfs_root *root = NULL;
 947         int ret = -ENOMEM;
 948
 949         inode = btrfs_new_test_inode();
 950         if (!inode) {
 951                 test_msg("Couldn't allocate inode\n");
 952                 return ret;
 953         }
 954
 955         fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
 956         if (!fs_info) {
 957                 test_msg("Couldn't allocate dummy fs info\n");
 958                 goto out;
 959         }
 960
 961         root = btrfs_alloc_dummy_root(fs_info);
 962         if (IS_ERR(root)) {
 963                 test_msg("Couldn't allocate root\n");
 964                 goto out;
 965         }
 966
 967         BTRFS_I(inode)->root = root;
 968         btrfs_test_inode_set_ops(inode);
 969
 970         /* [BTRFS_MAX_EXTENT_SIZE] */
 971         BTRFS_I(inode)->outstanding_extents++;
 972         ret = btrfs_set_extent_delalloc(inode, 0, BTRFS_MAX_EXTENT_SIZE - 1,
 973                                         NULL, 0);
 974         if (ret) {
 975                 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
 976                 goto out;
 977         }
 978         if (BTRFS_I(inode)->outstanding_extents != 1) {
 979                 ret = -EINVAL;
 980                 test_msg("Miscount, wanted 1, got %u\n",
 981                          BTRFS_I(inode)->outstanding_extents);
 982                 goto out;
 983         }
 984
 985         /* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
 986         BTRFS_I(inode)->outstanding_extents++;
 987         ret = btrfs_set_extent_delalloc(inode, BTRFS_MAX_EXTENT_SIZE,
 988                                         BTRFS_MAX_EXTENT_SIZE + sectorsize - 1,
 989                                         NULL, 0);
 990         if (ret) {
 991                 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
 992                 goto out;
 993         }
 994         if (BTRFS_I(inode)->outstanding_extents != 2) {
 995                 ret = -EINVAL;
 996                 test_msg("Miscount, wanted 2, got %u\n",
 997                          BTRFS_I(inode)->outstanding_extents);
 998                 goto out;
 999         }
1000
1001         /* [BTRFS_MAX_EXTENT_SIZE/2][sectorsize HOLE][the rest] */
1002         ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
1003                                BTRFS_MAX_EXTENT_SIZE >> 1,
1004                                (BTRFS_MAX_EXTENT_SIZE >> 1) + sectorsize - 1,
1005                                EXTENT_DELALLOC | EXTENT_DIRTY |
1006                                EXTENT_UPTODATE | EXTENT_DO_ACCOUNTING, 0, 0,
1007                                NULL, GFP_KERNEL);
1008         if (ret) {
1009                 test_msg("clear_extent_bit returned %d\n", ret);
1010                 goto out;
1011         }
1012         if (BTRFS_I(inode)->outstanding_extents != 2) {
1013                 ret = -EINVAL;
1014                 test_msg("Miscount, wanted 2, got %u\n",
1015                          BTRFS_I(inode)->outstanding_extents);
1016                 goto out;
1017         }
1018
1019         /* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
1020         BTRFS_I(inode)->outstanding_extents++;
1021         ret = btrfs_set_extent_delalloc(inode, BTRFS_MAX_EXTENT_SIZE >> 1,
1022                                         (BTRFS_MAX_EXTENT_SIZE >> 1)
1023                                         + sectorsize - 1,
1024                                         NULL, 0);
1025         if (ret) {
1026                 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1027                 goto out;
1028         }
1029         if (BTRFS_I(inode)->outstanding_extents != 2) {
1030                 ret = -EINVAL;
1031                 test_msg("Miscount, wanted 2, got %u\n",
1032                          BTRFS_I(inode)->outstanding_extents);
1033                 goto out;
1034         }
1035
1036         /*
1037          * [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize HOLE][BTRFS_MAX_EXTENT_SIZE+sectorsize]
1038          *
1039          * I'm artificially adding 2 to outstanding_extents because in the
1040          * buffered IO case we'd add things up as we go, but I don't feel like
1041          * doing that here, this isn't the interesting case we want to test.
1042          */
1043         BTRFS_I(inode)->outstanding_extents += 2;
1044         ret = btrfs_set_extent_delalloc(inode,
1045                         BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize,
1046                         (BTRFS_MAX_EXTENT_SIZE << 1) + 3 * sectorsize - 1,
1047                         NULL, 0);
1048         if (ret) {
1049                 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1050                 goto out;
1051         }
1052         if (BTRFS_I(inode)->outstanding_extents != 4) {
1053                 ret = -EINVAL;
1054                 test_msg("Miscount, wanted 4, got %u\n",
1055                          BTRFS_I(inode)->outstanding_extents);
1056                 goto out;
1057         }
1058
1059         /*
1060         * [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize][BTRFS_MAX_EXTENT_SIZE+sectorsize]
1061         */
1062         BTRFS_I(inode)->outstanding_extents++;
1063         ret = btrfs_set_extent_delalloc(inode,
1064                         BTRFS_MAX_EXTENT_SIZE + sectorsize,
1065                         BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, NULL, 0);
1066         if (ret) {
1067                 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1068                 goto out;
1069         }
1070         if (BTRFS_I(inode)->outstanding_extents != 3) {
1071                 ret = -EINVAL;
1072                 test_msg("Miscount, wanted 3, got %u\n",
1073                          BTRFS_I(inode)->outstanding_extents);
1074                 goto out;
1075         }
1076
1077         /* [BTRFS_MAX_EXTENT_SIZE+4k][4K HOLE][BTRFS_MAX_EXTENT_SIZE+4k] */
1078         ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
1079                                BTRFS_MAX_EXTENT_SIZE + sectorsize,
1080                                BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1,
1081                                EXTENT_DIRTY | EXTENT_DELALLOC |
1082                                EXTENT_DO_ACCOUNTING | EXTENT_UPTODATE, 0, 0,
1083                                NULL, GFP_KERNEL);
1084         if (ret) {
1085                 test_msg("clear_extent_bit returned %d\n", ret);
1086                 goto out;
1087         }
1088         if (BTRFS_I(inode)->outstanding_extents != 4) {
1089                 ret = -EINVAL;
1090                 test_msg("Miscount, wanted 4, got %u\n",
1091                          BTRFS_I(inode)->outstanding_extents);
1092                 goto out;
1093         }
1094
1095         /*
1096          * Refill the hole again just for good measure, because I thought it
1097          * might fail and I'd rather satisfy my paranoia at this point.
1098          */
1099         BTRFS_I(inode)->outstanding_extents++;
1100         ret = btrfs_set_extent_delalloc(inode,
1101                         BTRFS_MAX_EXTENT_SIZE + sectorsize,
1102                         BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, NULL, 0);
1103         if (ret) {
1104                 test_msg("btrfs_set_extent_delalloc returned %d\n", ret);
1105                 goto out;
1106         }
1107         if (BTRFS_I(inode)->outstanding_extents != 3) {
1108                 ret = -EINVAL;
1109                 test_msg("Miscount, wanted 3, got %u\n",
1110                          BTRFS_I(inode)->outstanding_extents);
1111                 goto out;
1112         }
1113
1114         /* Empty */
1115         ret = clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
1116                                EXTENT_DIRTY | EXTENT_DELALLOC |
1117                                EXTENT_DO_ACCOUNTING | EXTENT_UPTODATE, 0, 0,
1118                                NULL, GFP_KERNEL);
1119         if (ret) {
1120                 test_msg("clear_extent_bit returned %d\n", ret);
1121                 goto out;
1122         }
1123         if (BTRFS_I(inode)->outstanding_extents) {
1124                 ret = -EINVAL;
1125                 test_msg("Miscount, wanted 0, got %u\n",
1126                          BTRFS_I(inode)->outstanding_extents);
1127                 goto out;
1128         }
1129         ret = 0;
1130 out:
1131         if (ret)
1132                 clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
1133                                  EXTENT_DIRTY | EXTENT_DELALLOC |
1134                                  EXTENT_DO_ACCOUNTING | EXTENT_UPTODATE, 0, 0,
1135                                  NULL, GFP_KERNEL);
1136         iput(inode);
1137         btrfs_free_dummy_root(root);
1138         btrfs_free_dummy_fs_info(fs_info);
1139         return ret;
1140 }
1141
1142 int btrfs_test_inodes(u32 sectorsize, u32 nodesize)
1143 {
1144         int ret;
1145
1146         set_bit(EXTENT_FLAG_COMPRESSED, &compressed_only);
1147         set_bit(EXTENT_FLAG_VACANCY, &vacancy_only);
1148         set_bit(EXTENT_FLAG_PREALLOC, &prealloc_only);
1149
1150         test_msg("Running btrfs_get_extent tests\n");
1151         ret = test_btrfs_get_extent(sectorsize, nodesize);
1152         if (ret)
1153                 return ret;
1154         test_msg("Running hole first btrfs_get_extent test\n");
1155         ret = test_hole_first(sectorsize, nodesize);
1156         if (ret)
1157                 return ret;
1158         test_msg("Running outstanding_extents tests\n");
1159         return test_extent_accounting(sectorsize, nodesize);
1160 }