On Wed, Jul 07, 2010 at 01:40:53AM -0600, Andreas Dilger wrote: > On 2010-07-06, at 11:09, Aneesh Kumar K. V wrote: > > On Tue, 6 Jul 2010 12:10:02 -0400, "J. Bruce Fields" <bfields@xxxxxxxxxxxx> wrote: > >> ... I don't understand why both need to come in the same system call. > >> Is it purely an efficiency question? If so, why do you expect this to > >> be significant? > > > > Since we know that system wide file handle should include a file system > > identifier and a file identifier my plan was to retrieve both in the > > same syscall. > > Won't having it be in a separate system call be racy w.r.t. doing the pathname lookup twice? It'll be rare that a server will want to *just* get a filehandle; normally it will at least want to get some attributes at the same time. So I think it will always need to open the file first and then do the rest of the operations on the returned filehandle. --b. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
