diff options
| author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2015-04-16 11:55:08 +0300 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2015-06-10 19:25:59 +0300 |
| commit | 0ed4792af0e8346cb670b4bc540df7594f4b2020 (patch) | |
| tree | b00c9218655cf51dffd78f141abda64c7ea8a696 /fs/btrfs/transaction.c | |
| parent | 9d220c95f5191f6e99fbb992d5f36a929d3fc432 (diff) | |
| download | linux-0ed4792af0e8346cb670b4bc540df7594f4b2020.tar.xz | |
btrfs: qgroup: Switch to new extent-oriented qgroup mechanism.
Switch from old ref_node based qgroup to extent based qgroup mechanism
for normal operations.
The new mechanism should hugely reduce the overhead of btrfs quota
system, and further more, the codes and logic should be more clean and
easier to maintain.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/transaction.c')
| -rw-r--r-- | fs/btrfs/transaction.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 3694d57e759f..6f49715cc127 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -1967,6 +1967,13 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, goto scrub_continue; } + /* Reocrd old roots for later qgroup accounting */ + ret = btrfs_qgroup_prepare_account_extents(trans, root->fs_info); + if (ret) { + mutex_unlock(&root->fs_info->reloc_mutex); + goto scrub_continue; + } + /* * make sure none of the code above managed to slip in a * delayed item @@ -2008,6 +2015,17 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, */ btrfs_free_log_root_tree(trans, root->fs_info); + /* + * Since fs roots are all committed, we can get a quite accurate + * new_roots. So let's do quota accounting. + */ + ret = btrfs_qgroup_account_extents(trans, root->fs_info); + if (ret < 0) { + mutex_unlock(&root->fs_info->tree_log_mutex); + mutex_unlock(&root->fs_info->reloc_mutex); + goto scrub_continue; + } + ret = commit_cowonly_roots(trans, root); if (ret) { mutex_unlock(&root->fs_info->tree_log_mutex); |