On Thu, Feb 20, 2014 at 06:08:57PM +0800, Miao Xie wrote:
> --- a/fs/btrfs/tree-log.c
> +++ b/fs/btrfs/tree-log.c
> @@ -142,6 +142,12 @@ static int start_log_trans(struct btrfs_trans_handle
> *trans,
>
> mutex_lock(&root->log_mutex);
> if (root->log_root) {
> + if (ACCESS_ONCE(root->fs_info->last_trans_log_full_commit) ==
> + trans->transid) {
> + ret = -EAGAIN;
> + goto out;
> + }
So last_trans_log_full_commit needs special handling, but opencoding it
everywhere is no very clean. Documented set/get helpers would be much
better.
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