On Mon, Aug 9, 2010 at 8:00 AM, Yuehai Xu <yuehaixu@xxxxxxxxx> wrote: > Hi all, > > Suppose there is only one nfsd and two clients are sending random read > requests to this daemon. In this way, read ahead of the client should > not work since the requests are random. The requests between these two > clients should be async, while the requests from any one client of the > two should be sync. My question is about how will the nfsd handle > these requests, using sync or async mode in the kernel? Say, will nfsd > never handle the next request unless the previous request has been > served, without considering which clients the request belongs to? Or > nfsd just dispatch async requests to the lower level as soon as it > receives a request? > > Any answer will be appreciate! > > Yuehai > I review the code of NFS and notice that the read operation of NFS will invoke generic_file_aio_read(), which means the requests(from the case I mentioned above) dispatched by a nfsd should be sync to each other, is that correct? Thanks, Yuehai -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
