On Fri, Apr 04, 2014 at 09:13:24AM +1100, NeilBrown wrote: > On Thu, 3 Apr 2014 17:36:10 -0400 "J. Bruce Fields" <bfields@xxxxxxxxxxxx> > wrote: > > > (BTW: I also noticed the other day that systemd is calling > > name_to_handle_at to get a mount id. Seems like overkill in both > > cases--shouldn't there be a simpler way to get just the mount id?) > > Yes, it is called "xstat" and is an extensible version of stat which even > includes a 'query' bitmap to list which things you want. Yes. I forget that encoding the filehandle is typically just reading inode and generation number and encoding the results in a funny way, so it's not particularly heavy-weight. But lumping the two together does mean that your request can fail just because the filesystem doesn't support nfs exports. > Unfortunately it never made it to mainline. We should submit a patch to > systemd to get it to use xstat instead of name_to_handle_at. That would > ensure that the kernel implemented it double-quick :-) Hm.... --b. -- 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
