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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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17
fs/btrfs/extent-tree.c
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@@ -2992,6 +2992,10 @@ static int __btrfs_mod_ref(struct btrfs_trans_handle *trans,
int (*process_func)(struct btrfs_trans_handle *, struct btrfs_root *,
u64, u64, u64, u64, u64, u64, int);
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
if (unlikely(test_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state)))
return 0;
#endif
ref_root = btrfs_header_owner(buf);
nritems = btrfs_header_nritems(buf);
level = btrfs_header_level(buf);
@@ -6151,6 +6155,10 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root *root,
int ret;
struct btrfs_fs_info *fs_info = root->fs_info;
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
if (unlikely(test_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state)))
return 0;
#endif
add_pinned_bytes(root->fs_info, num_bytes, owner, root_objectid);
/*
@@ -7157,6 +7165,15 @@ struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
bool skinny_metadata = btrfs_fs_incompat(root->fs_info,
SKINNY_METADATA);
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
if (unlikely(test_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state))) {
buf = btrfs_init_new_buffer(trans, root, root->alloc_bytenr,
blocksize, level);
if (!IS_ERR(buf))
root->alloc_bytenr += blocksize;
return buf;
}
#endif
block_rsv = use_block_rsv(trans, root, blocksize);
if (IS_ERR(block_rsv))
return ERR_CAST(block_rsv);