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block/commit: use QEMU_IOVEC_INIT_BUF

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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: 20190218140926.333779-6-vsementsov@virtuozzo.com
Message-Id: <20190218140926.333779-6-vsementsov@virtuozzo.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2019-02-18 17:09:14 +03:00 committed by Stefan Hajnoczi
parent 31e0a6e1af
commit ee7a883ace
1 changed files with 1 additions and 6 deletions
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7
block/commit.c
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@ -47,14 +47,9 @@ static int coroutine_fn commit_populate(BlockBackend *bs, BlockBackend *base,
void *buf)
{
int ret = 0;
QEMUIOVector qiov;
struct iovec iov = {
.iov_base = buf,
.iov_len = bytes,
};
QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
assert(bytes < SIZE_MAX);
qemu_iovec_init_external(&qiov, &iov, 1);
ret = blk_co_preadv(bs, offset, qiov.size, &qiov, 0);
if (ret < 0) {