Re: [PATCH] loopdev: sync capacity after setting it

[Karel Zak <kzak@redhat.com>]

On Mon, Mar 18, 2013 at 09:05:38AM -0400, Jeff Mahoney wrote:
> Yeah, but that's in losetup --set-capacity where it's an explicit
> operation. This change will add the ioctl into every
> loopdev_setup_device call when the offset or sizelimit options are used.
> If it isn't supported by the kernel, the ioctl will fail silently and
> *maybe* the mount will fail, but that's totally dependent on the the
> file system. If the mount succeeds, it will be done outside of the
> parameters the user requested.
> 
> So, all I really want to do is dump an error message when the ioctl
> fails with -ENOTTY || -EINVAL about there being a lack of kernel
> support. We shouldn't allow the device configuration to proceed.
> 
> The part that makes it more "fun" is that a few patches in 3.9-rc1 fixed
> this in the kernel, so it won't actually be needed for new kernels.

 Nasty... well, send patch.
 
    Karel


-- 
 Karel Zak  <kzak@redhat.com>
 http://karelzak.blogspot.com