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virtio-blk: fix comment for virtio_blk_rw_complete as nalloc is initially -1 

The initial value of nalloc is -1, but not 1.

Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-id: 1541479952-32355-1-git-send-email-dongli.zhang@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Dongli Zhang 2018-11-06 12:52:32 +08:00 committed by Stefan Hajnoczi
parent 5636da7682
commit e61809ed8a
1 changed files with 1 additions and 1 deletions
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2
hw/block/virtio-blk.c
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@ -96,7 +96,7 @@ static void virtio_blk_rw_complete(void *opaque, int ret)
trace_virtio_blk_rw_complete(vdev, req, ret);
if (req->qiov.nalloc != -1) {
/* If nalloc is != 1 req->qiov is a local copy of the original
/* If nalloc is != -1 req->qiov is a local copy of the original
* external iovec. It was allocated in submit_requests to be
* able to merge requests. */
qemu_iovec_destroy(&req->qiov);