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Btrfs: add sanity tests for new qgroup accounting code

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This exercises the various parts of the new qgroup accounting code.  We do some
basic stuff and do some things with the shared refs to make sure all that code
works.  I had to add a bunch of infrastructure because I needed to be able to
insert items into a fake tree without having to do all the hard work myself,
hopefully this will be usefull in the future.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Josef Bacik
2014-05-07 17:06:09 -04:00
committed by Chris Mason
parent fcebe4562d
commit faa2dbf004
16 changed files with 700 additions and 37 deletions
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18
fs/btrfs/disk-io.c
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@@ -1110,6 +1110,11 @@ struct extent_buffer *btrfs_find_tree_block(struct btrfs_root *root,
struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
u64 bytenr, u32 blocksize)
{
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
if (unlikely(test_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state)))
return alloc_test_extent_buffer(root->fs_info, bytenr,
blocksize);
#endif
return alloc_extent_buffer(root->fs_info, bytenr, blocksize);
}
@@ -1288,6 +1293,7 @@ struct btrfs_root *btrfs_alloc_dummy_root(void)
return ERR_PTR(-ENOMEM);
__setup_root(4096, 4096, 4096, 4096, root, NULL, 1);
set_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state);
root->alloc_bytenr = 0;
return root;
}
@@ -2089,7 +2095,7 @@ static void free_root_pointers(struct btrfs_fs_info *info, int chunk_root)
free_root_extent_buffers(info->chunk_root);
}
static void del_fs_roots(struct btrfs_fs_info *fs_info)
void btrfs_free_fs_roots(struct btrfs_fs_info *fs_info)
{
int ret;
struct btrfs_root *gang[8];
@@ -2969,7 +2975,7 @@ fail_qgroup:
fail_trans_kthread:
kthread_stop(fs_info->transaction_kthread);
btrfs_cleanup_transaction(fs_info->tree_root);
del_fs_roots(fs_info);
btrfs_free_fs_roots(fs_info);
fail_cleaner:
kthread_stop(fs_info->cleaner_kthread);
@@ -3504,8 +3510,10 @@ void btrfs_drop_and_free_fs_root(struct btrfs_fs_info *fs_info,
if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state))
btrfs_free_log(NULL, root);
__btrfs_remove_free_space_cache(root->free_ino_pinned);
__btrfs_remove_free_space_cache(root->free_ino_ctl);
if (root->free_ino_pinned)
__btrfs_remove_free_space_cache(root->free_ino_pinned);
if (root->free_ino_ctl)
__btrfs_remove_free_space_cache(root->free_ino_ctl);
free_fs_root(root);
}
@@ -3655,7 +3663,7 @@ int close_ctree(struct btrfs_root *root)
btrfs_sysfs_remove_one(fs_info);
del_fs_roots(fs_info);
btrfs_free_fs_roots(fs_info);
btrfs_put_block_group_cache(fs_info);