On Tue, Feb 03, 2015 at 04:59:43PM -0500, Trond Myklebust wrote: > If we're using NFSv4.1, then we have the ability to let the server know > whether or not we believe that returning a delegation as part of our OPEN > request would be useful. > The feature needs to be used with care, since the client sending the request > doesn't necessarily know how other clients are using that file, and how > they may be affected by the delegation. > For this reason, our initial use of the feature will be to let the server > know when the client believes that handing out a delegation would not be > useful. > The first application for this function is when opening the file using > O_DIRECT. I can't see why O_DIRECT openers would not want to use a delegation, can you explain your rationale? -- 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