Messages in this thread | | | Date | Sat, 30 Apr 2005 17:42:58 +0100 | From | Jamie Lokier <> | Subject | Re: [PATCH] private mounts |
| |
Miklos Szeredi wrote: > > Actually, in terms of complexity, it's not much different from using > > bind mounts. > > As has been suggested by Pavel, bind mounting foreign namespaces could > just be done with a new bind_fd(fd, path) syscall and file descriptor > passing with SCM_RIGHTS.
Yes, he's right.
But you don't need a new system call to bind an fd.
"mount --bind /proc/self/fd/N mount_point" works, try it.
> That sounds to me orders of magnitude less complex (on the kernel side > at least) than sb sharing.
In terms of what happens in the kernel, they're almost exactly the same: either way, a super block ends up shared by two mounts. That's what I meant.
I agree that in terms of what userspace has to do, if just binding works that's simpler. And it does seem to work with the above mount command.
-- Jamie - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |