tree a3b937b008d6472dadca8c1d8d88745fcc8cc6bd
parent eaa6c85f5df022e65a3c5c14908cd191430cbff5
author Christoph Hellwig <hch@lst.de> 1264688352 +0100
committer Anthony Liguori <aliguori@us.ibm.com> 1265824623 -0600

block: saner flags filtering in bdrv_open2

Clean up the current mess about figuring out which flags to pass to the
driver.  BDRV_O_FILE, BDRV_O_SNAPSHOT and BDRV_O_NO_BACKING are flags
only used by the block layer internally so filter them out directly.
Previously BDRV_O_NO_BACKING could accidentally be passed to the drivers,
but wasn't ever used.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>