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virtio-blk: cleanup using VirtIOBlock *s and VirtIODevice *vdev 

In several part we still using req->dev or VIRTIO_DEVICE(req->dev)
when we have already defined s and vdev pointers:
    VirtIOBlock *s = req->dev;
    VirtIODevice *vdev = VIRTIO_DEVICE(s);

Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Message-id: 20190208142347.214815-1-sgarzare@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefano Garzarella 2019-02-08 15:23:47 +01:00 committed by Stefan Hajnoczi
parent 6eaa20c836
commit 9a6719d572
1 changed files with 9 additions and 13 deletions
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22
hw/block/virtio-blk.c
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@ -63,9 +63,8 @@ static void virtio_blk_req_complete(VirtIOBlockReq *req, unsigned char status)
static int virtio_blk_handle_rw_error(VirtIOBlockReq *req, int error,
bool is_read)
{
BlockErrorAction action = blk_get_error_action(req->dev->blk,
is_read, error);
VirtIOBlock *s = req->dev;
BlockErrorAction action = blk_get_error_action(s->blk, is_read, error);
if (action == BLOCK_ERROR_ACTION_STOP) {
/* Break the link as the next request is going to be parsed from the
@ -138,7 +137,7 @@ static void virtio_blk_flush_complete(void *opaque, int ret)
}
virtio_blk_req_complete(req, VIRTIO_BLK_S_OK);
block_acct_done(blk_get_stats(req->dev->blk), &req->acct);
block_acct_done(blk_get_stats(s->blk), &req->acct);
virtio_blk_free_request(req);
out:
@ -513,7 +512,7 @@ static int virtio_blk_handle_request(VirtIOBlockReq *req, MultiReqBuffer *mrb)
- sizeof(struct virtio_blk_inhdr);
iov_discard_back(in_iov, &in_num, sizeof(struct virtio_blk_inhdr));
type = virtio_ldl_p(VIRTIO_DEVICE(req->dev), &req->out.type);
type = virtio_ldl_p(vdev, &req->out.type);
/* VIRTIO_BLK_T_OUT defines the command direction. VIRTIO_BLK_T_BARRIER
* is an optional flag. Although a guest should not send this flag if
@ -522,8 +521,7 @@ static int virtio_blk_handle_request(VirtIOBlockReq *req, MultiReqBuffer *mrb)
case VIRTIO_BLK_T_IN:
{
bool is_write = type & VIRTIO_BLK_T_OUT;
req->sector_num = virtio_ldq_p(VIRTIO_DEVICE(req->dev),
&req->out.sector);
req->sector_num = virtio_ldq_p(vdev, &req->out.sector);
if (is_write) {
qemu_iovec_init_external(&req->qiov, out_iov, out_num);
@ -535,25 +533,23 @@ static int virtio_blk_handle_request(VirtIOBlockReq *req, MultiReqBuffer *mrb)
req->qiov.size / BDRV_SECTOR_SIZE);
}
if (!virtio_blk_sect_range_ok(req->dev, req->sector_num,
req->qiov.size)) {
if (!virtio_blk_sect_range_ok(s, req->sector_num, req->qiov.size)) {
virtio_blk_req_complete(req, VIRTIO_BLK_S_IOERR);
block_acct_invalid(blk_get_stats(req->dev->blk),
block_acct_invalid(blk_get_stats(s->blk),
is_write ? BLOCK_ACCT_WRITE : BLOCK_ACCT_READ);
virtio_blk_free_request(req);
return 0;
}
block_acct_start(blk_get_stats(req->dev->blk),
&req->acct, req->qiov.size,
block_acct_start(blk_get_stats(s->blk), &req->acct, req->qiov.size,
is_write ? BLOCK_ACCT_WRITE : BLOCK_ACCT_READ);
/* merge would exceed maximum number of requests or IO direction
* changes */
if (mrb->num_reqs > 0 && (mrb->num_reqs == VIRTIO_BLK_MAX_MERGE_REQS ||
is_write != mrb->is_write ||
!req->dev->conf.request_merging)) {
virtio_blk_submit_multireq(req->dev->blk, mrb);
!s->conf.request_merging)) {
virtio_blk_submit_multireq(s->blk, mrb);
}
assert(mrb->num_reqs < VIRTIO_BLK_MAX_MERGE_REQS);