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qcow2: Fix error cases to run depedent requests 

Requests depending on a failed request would end up waiting forever. This fixes
the error path to continue dependent requests even when the request has failed.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2011-09-01 15:02:13 +02:00
parent 8e217d5384
commit 0fa9131a44
1 changed files with 4 additions and 3 deletions
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7
block/qcow2.c
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@ -593,13 +593,12 @@ static int qcow2_co_writev(BlockDriverState *bs,
}
ret = qcow2_alloc_cluster_link_l2(bs, &l2meta);
run_dependent_requests(s, &l2meta);
if (ret < 0) {
goto fail;
}
run_dependent_requests(s, &l2meta);
remaining_sectors -= cur_nr_sectors;
sector_num += cur_nr_sectors;
bytes_done += cur_nr_sectors * 512;
@ -607,6 +606,8 @@ static int qcow2_co_writev(BlockDriverState *bs,
ret = 0;
fail:
run_dependent_requests(s, &l2meta);
qemu_co_mutex_unlock(&s->lock);
qemu_iovec_destroy(&hd_qiov);