On 17 January 2018 at 13:15, 陶冬冬 <tdd21151186@xxxxxxxxx> wrote: > Hi Xuehan, > Fsc need to be revoked if another client is trying to write the file at the same time. > because the cache of the “read” client may not be valid any more. I understand that, but the pending caps is "Fr" which is also a "read" cap, so I think maybe the issued caps doesn't need to be revoked -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html