tree 7aa28de51cb2f375baf6fe943afd85e75ca7bcb9
parent 0bfc96cb77224736dfa35c3c555d37b3646ef35e
author Paolo Bonzini <pbonzini@redhat.com> 1326380489 +0100
committer Linus Torvalds <torvalds@linux-foundation.org> 1326582444 -0800

dm: do not forward ioctls from logical volumes to the underlying device

A logical volume can map to just part of underlying physical volume.
In this case, it must be treated like a partition.

Based on a patch from Alasdair G Kergon.

Cc: Alasdair G Kergon <agk@redhat.com>
Cc: dm-devel@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>