On Wed, Jun 21, 2006 at 08:52:06PM -0700, Andrew Morton wrote:
> I don't understand that. We're taking an ioctl against a dm device and
> we're passing it through to an underlying device? Or something else?
Indeed. The motivation behind this came from multipath: people want to
issue certain types of ioctls directly against a dm multipath device and
have them pass through one of the paths to the underlying device.
(Otherwise they'd need a knowledge of dm internals to poke around the tree
of dm devices and probe path statuses to determine the correct path(s) to
use - effectively implementing 'multipath' ioctls themselves from userspace
with unavoidable races.)
Alasdair
--
[email protected]
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
