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qemu-img: use qemu_iovec_init_buf 

Use new qemu_iovec_init_buf() instead of
qemu_iovec_init_external( ... , 1), which simplifies the code.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20190218140926.333779-13-vsementsov@virtuozzo.com
Message-Id: <20190218140926.333779-13-vsementsov@virtuozzo.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2019-02-18 17:09:21 +03:00 committed by Stefan Hajnoczi
parent 199d95b043
commit c075a0af22
1 changed files with 2 additions and 8 deletions
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10
qemu-img.c
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@ -1670,7 +1670,6 @@ static int coroutine_fn convert_co_read(ImgConvertState *s, int64_t sector_num,
{
int n, ret;
QEMUIOVector qiov;
struct iovec iov;
assert(nb_sectors <= s->buf_sectors);
while (nb_sectors > 0) {
@ -1686,9 +1685,7 @@ static int coroutine_fn convert_co_read(ImgConvertState *s, int64_t sector_num,
bs_sectors = s->src_sectors[src_cur];
n = MIN(nb_sectors, bs_sectors - (sector_num - src_cur_offset));
iov.iov_base = buf;
iov.iov_len = n << BDRV_SECTOR_BITS;
qemu_iovec_init_external(&qiov, &iov, 1);
qemu_iovec_init_buf(&qiov, buf, n << BDRV_SECTOR_BITS);
ret = blk_co_preadv(
blk, (sector_num - src_cur_offset) << BDRV_SECTOR_BITS,
@ -1712,7 +1709,6 @@ static int coroutine_fn convert_co_write(ImgConvertState *s, int64_t sector_num,
{
int ret;
QEMUIOVector qiov;
struct iovec iov;
while (nb_sectors > 0) {
int n = nb_sectors;
@ -1740,9 +1736,7 @@ static int coroutine_fn convert_co_write(ImgConvertState *s, int64_t sector_num,
(s->compressed &&
!buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)))
{
iov.iov_base = buf;
iov.iov_len = n << BDRV_SECTOR_BITS;
qemu_iovec_init_external(&qiov, &iov, 1);
qemu_iovec_init_buf(&qiov, buf, n << BDRV_SECTOR_BITS);
ret = blk_co_pwritev(s->target, sector_num << BDRV_SECTOR_BITS,
n << BDRV_SECTOR_BITS, &qiov, flags);