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block: Fix multiwrite with overlapping requests

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With overlapping requests, the total number of sectors is smaller than the sum
of the nb_sectors of both requests.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2010-05-21 11:09:42 +02:00
parent 175e11526e
commit cbf1dff2f1
1 changed files with 1 additions and 1 deletions
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block.c
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@ -2019,7 +2019,7 @@ static int multiwrite_merge(BlockDriverState *bs, BlockRequest *reqs,
// Add the second request
qemu_iovec_concat(qiov, reqs[i].qiov, reqs[i].qiov->size);
reqs[outidx].nb_sectors += reqs[i].nb_sectors;
reqs[outidx].nb_sectors = qiov->size >> 9;
reqs[outidx].qiov = qiov;
mcb->callbacks[i].free_qiov = reqs[outidx].qiov;