diff options
| -rw-r--r-- | fs/btrfs/send.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index dc43fed3f4bb..db381cf94943 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -4570,6 +4570,41 @@ long btrfs_ioctl_send(struct file *mnt_file, void __user *arg_) send_root = BTRFS_I(file_inode(mnt_file))->root; fs_info = send_root->fs_info; + /* + * This is done when we lookup the root, it should already be complete + * by the time we get here. + */ + WARN_ON(send_root->orphan_cleanup_state != ORPHAN_CLEANUP_DONE); + + /* + * If we just created this root we need to make sure that the orphan + * cleanup has been done and committed since we search the commit root, + * so check its commit root transid with our otransid and if they match + * commit the transaction to make sure everything is updated. + */ + down_read(&send_root->fs_info->extent_commit_sem); + if (btrfs_header_generation(send_root->commit_root) == + btrfs_root_otransid(&send_root->root_item)) { + struct btrfs_trans_handle *trans; + + up_read(&send_root->fs_info->extent_commit_sem); + + trans = btrfs_attach_transaction_barrier(send_root); + if (IS_ERR(trans)) { + if (PTR_ERR(trans) != -ENOENT) { + ret = PTR_ERR(trans); + goto out; + } + /* ENOENT means theres no transaction */ + } else { + ret = btrfs_commit_transaction(trans, send_root); + if (ret) + goto out; + } + } else { + up_read(&send_root->fs_info->extent_commit_sem); + } + arg = memdup_user(arg_, sizeof(*arg)); if (IS_ERR(arg)) { ret = PTR_ERR(arg); |