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Re: [Qemu-devel] [PATCH 1/1] virtio-blk: rename iov to out_iov in virtio
From: |
Dongli Zhang |
Subject: |
Re: [Qemu-devel] [PATCH 1/1] virtio-blk: rename iov to out_iov in virtio_blk_handle_request() |
Date: |
Wed, 14 Nov 2018 22:02:54 +0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.3.0 |
Ping?
Thanks!
Dongli Zhang
On 11/07/2018 12:09 AM, Dongli Zhang wrote:
> In virtio_blk_handle_request(), in_iov is used for input header while iov
> is used for output header. Rename iov to out_iov to pair output header's
> name with in_iov to avoid confusing people when reading source code.
>
> Signed-off-by: Dongli Zhang <address@hidden>
> ---
> hw/block/virtio-blk.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c
> index 83cf5c0..fb0d74d 100644
> --- a/hw/block/virtio-blk.c
> +++ b/hw/block/virtio-blk.c
> @@ -482,7 +482,7 @@ static int virtio_blk_handle_request(VirtIOBlockReq *req,
> MultiReqBuffer *mrb)
> {
> uint32_t type;
> struct iovec *in_iov = req->elem.in_sg;
> - struct iovec *iov = req->elem.out_sg;
> + struct iovec *out_iov = req->elem.out_sg;
> unsigned in_num = req->elem.in_num;
> unsigned out_num = req->elem.out_num;
> VirtIOBlock *s = req->dev;
> @@ -493,13 +493,13 @@ static int virtio_blk_handle_request(VirtIOBlockReq
> *req, MultiReqBuffer *mrb)
> return -1;
> }
>
> - if (unlikely(iov_to_buf(iov, out_num, 0, &req->out,
> + if (unlikely(iov_to_buf(out_iov, out_num, 0, &req->out,
> sizeof(req->out)) != sizeof(req->out))) {
> virtio_error(vdev, "virtio-blk request outhdr too short");
> return -1;
> }
>
> - iov_discard_front(&iov, &out_num, sizeof(req->out));
> + iov_discard_front(&out_iov, &out_num, sizeof(req->out));
>
> if (in_iov[in_num - 1].iov_len < sizeof(struct virtio_blk_inhdr)) {
> virtio_error(vdev, "virtio-blk request inhdr too short");
> @@ -526,7 +526,7 @@ static int virtio_blk_handle_request(VirtIOBlockReq *req,
> MultiReqBuffer *mrb)
> &req->out.sector);
>
> if (is_write) {
> - qemu_iovec_init_external(&req->qiov, iov, out_num);
> + qemu_iovec_init_external(&req->qiov, out_iov, out_num);
> trace_virtio_blk_handle_write(vdev, req, req->sector_num,
> req->qiov.size / BDRV_SECTOR_SIZE);
> } else {
>