On Thu, Sep 11, 2014 at 11:48 AM, Christoph Hellwig <hch@xxxxxx> wrote: > On Thu, Sep 11, 2014 at 11:38:24AM -0400, Trond Myklebust wrote: >> Why would it be needed? The layout isn't expected to change. If the >> chown affects permissions then it is up to the DS to enforce that >> (although POSIX does not require it to do that). > > I was wondering about the truncate case. Even if the DS needs to be > able to enforce the new size it seems pointless to keep a layout beyond the > size around. In the files layout case, it is actually quite common for the server to hand out an "infinite" sized layout in response to a LAYOUTGET. It means that the client doesn't need to ask for a new layout in order to append to the file. > I don't really see a need to drop on a chown for the blocklayout or > objlayout drivers either, given that these semantics are enforced at a higher > level. -- Trond Myklebust Linux NFS client maintainer, PrimaryData trond.myklebust@xxxxxxxxxxxxxxx -- 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
