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(parent: d75cbb5) | patch
block/get_block_status: fix BDRV_BLOCK_ZERO for unallocated blocks
authorPeter Lieven <pl@kamp.de>
Thu, 24 Oct 2013 10:07:04 +0000 (12:07 +0200)
committerKevin Wolf <kwolf@redhat.com>
Thu, 28 Nov 2013 09:30:52 +0000 (10:30 +0100)
commitc3d8688470a33feb0ea78c006b4399d50c13185e
treeb9fcb57cd372cbdaec924fb19ea266f0fde0a87etree | snapshot
parentd75cbb5e68f5a7d64248ba89399a7f2073231de5commit | diff
block/get_block_status: fix BDRV_BLOCK_ZERO for unallocated blocks

this patch does 2 things:
a) only do additional call outs if BDRV_BLOCK_ZERO is not already set.
b) use the newly introduced bdrv_unallocated_blocks_are_zero()
   to return the zero state of an unallocated block. the used callout
   to bdrv_has_zero_init() is only valid right after bdrv_create.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
block.c diff | blob | history
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