On Tue, Dec 11, 2012 at 06:00:00PM +0400, Stanislav Kinsbursky wrote: > 11.12.2012 00:28, J. Bruce Fields ??????????: > >On Thu, Dec 06, 2012 at 06:34:47PM +0300, Stanislav Kinsbursky wrote: > >>NFSd does lookup. Lookup is done starting from current->fs->root. > >>NFSd is a kthread, cloned by kthreadd, and thus have global (but luckely > >>unshared) root. > >>So we have to swap root to those, which process, started NFSd, has. Because > >>that process can be in a container with it's own root. > > > >This doesn't sound right to me. > > > >Which lookups exactly do you see being done relative to > >current->fs->root ? > > > > Ok, you are right. I was mistaken here. > This is not a exactly lookup, but d_path() problem in svc_export_request(). > I.e. without root swapping, d_path() will give not local export path (like "/export") > but something like this "/root/containers_root/export". Now, *that* is a different story (and makes some sense). Take a look at __d_path(), please. You don't need to set ->fs->root to get d_path() equivalent relative to given point. -- 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
