diff options
Diffstat (limited to 'fs/btrfs/transaction.c')
| -rw-r--r-- | fs/btrfs/transaction.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 21c768c..f1e29fb 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -295,6 +295,7 @@ static struct btrfs_trans_handle *start_transaction(struct btrfs_root *root, struct btrfs_transaction *cur_trans; u64 num_bytes = 0; int ret; + u64 qgroup_reserved = 0; if (root->fs_info->fs_state & BTRFS_SUPER_FLAG_ERROR) return ERR_PTR(-EROFS); @@ -313,6 +314,14 @@ static struct btrfs_trans_handle *start_transaction(struct btrfs_root *root, * the appropriate flushing if need be. */ if (num_items > 0 && root != root->fs_info->chunk_root) { + if (root->fs_info->quota_enabled && + is_fstree(root->root_key.objectid)) { + qgroup_reserved = num_items * root->leafsize; + ret = btrfs_qgroup_reserve(root, qgroup_reserved); + if (ret) + return ERR_PTR(ret); + } + num_bytes = btrfs_calc_trans_metadata_size(root, num_items); ret = btrfs_block_rsv_add(root, &root->fs_info->trans_block_rsv, @@ -351,6 +360,7 @@ again: h->block_rsv = NULL; h->orig_rsv = NULL; h->aborted = 0; + h->qgroup_reserved = qgroup_reserved; h->delayed_ref_elem.seq = 0; INIT_LIST_HEAD(&h->qgroup_ref_list); @@ -524,6 +534,12 @@ static int __btrfs_end_transaction(struct btrfs_trans_handle *trans, * end_transaction. Subvolume quota depends on this. */ WARN_ON(trans->root != root); + + if (trans->qgroup_reserved) { + btrfs_qgroup_free(root, trans->qgroup_reserved); + trans->qgroup_reserved = 0; + } + while (count < 2) { unsigned long cur = trans->delayed_ref_updates; trans->delayed_ref_updates = 0; |