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block: Fix bs->request_alignment assertion for bs->sg=1 

For sg backends, bs->request_alignment is meaningless and may be 0.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Kevin Wolf 2014-03-05 15:49:55 +01:00
parent f47c3f5a80
commit 47ea2de2d6
1 changed files with 1 additions and 1 deletions
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2
block.c
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@ -935,7 +935,7 @@ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file,
bdrv_refresh_limits(bs); bdrv_refresh_limits(bs);
assert(bdrv_opt_mem_align(bs) != 0); assert(bdrv_opt_mem_align(bs) != 0);
assert(bs->request_alignment != 0); assert((bs->request_alignment != 0) || bs->sg);
#ifndef _WIN32 #ifndef _WIN32
if (bs->is_temporary) { if (bs->is_temporary) {