tree d69b04e2510ced9bc17efaa992ec78b79ab38280
parent f32f988c7778d0f1ff9c7e8d7547a354a7fdd3f6
author Kevin Wolf <kwolf@redhat.com> 1385636282 +0100
committer Kevin Wolf <kwolf@redhat.com> 1385743269 +0100

block: Use BDRV_O_NO_BACKING where appropriate

If you open an image temporarily just because you want to check its size
or get it flushed, there's no real reason to open the whole backing file
chain.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>