From: Paolo Bonzini <pbonz...@redhat.com>
A bit of Boolean algebra (and common sense) tells us that the
second "if" here is looking for blocks that are not allocated.
This is the opposite of the "if" that sets BDRV_BLOCK_ALLOCATED,
and thus it can use an "else".
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
Reviewed-by: Eric Blake <ebl...@redhat.com>
Reviewed-by: Fam Zheng <f...@redhat.com>
Message-id: 1431599702-10431-1-git-send-email-pbonz...@redhat.com
Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
---
block/io.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/block/io.c b/block/io.c
index 284784e..e394d92 100644
--- a/block/io.c
+++ b/block/io.c
@@ -1521,9 +1521,7 @@ static int64_t coroutine_fn
bdrv_co_get_block_status(BlockDriverState *bs,
if (ret & (BDRV_BLOCK_DATA | BDRV_BLOCK_ZERO)) {
ret |= BDRV_BLOCK_ALLOCATED;
- }
-
- if (!(ret & BDRV_BLOCK_DATA) && !(ret & BDRV_BLOCK_ZERO)) {
+ } else {
if (bdrv_unallocated_blocks_are_zero(bs)) {
ret |= BDRV_BLOCK_ZERO;
} else if (bs->backing_hd) {
--
2.1.0
