On Sat, 22 Feb 2014 01:27:51 +0100, David Sterba wrote:
> 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.
>
Right, I'll update it in the next version.
Thanks for your review.
Miao
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