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Tue, 30 Apr 2019 15:43:32 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 20/27] block/parallels: use buffer-based io X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Vladimir Sementsov-Ogievskiy Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Stefan Hajnoczi Reviewed-by: Stefano Garzarella Signed-off-by: Kevin Wolf --- block/parallels.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/block/parallels.c b/block/parallels.c index 15bc97b759..2747400577 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -220,20 +220,18 @@ static int64_t allocate_clusters(BlockDriverState *bs= , int64_t sector_num, if (bs->backing) { int64_t nb_cow_sectors =3D to_allocate * s->tracks; int64_t nb_cow_bytes =3D nb_cow_sectors << BDRV_SECTOR_BITS; - QEMUIOVector qiov =3D - QEMU_IOVEC_INIT_BUF(qiov, qemu_blockalign(bs, nb_cow_bytes), - nb_cow_bytes); + void *buf =3D qemu_blockalign(bs, nb_cow_bytes); =20 - ret =3D bdrv_co_preadv(bs->backing, idx * s->tracks * BDRV_SECTOR_= SIZE, - nb_cow_bytes, &qiov, 0); + ret =3D bdrv_co_pread(bs->backing, idx * s->tracks * BDRV_SECTOR_S= IZE, + nb_cow_bytes, buf, 0); if (ret < 0) { - qemu_vfree(qemu_iovec_buf(&qiov)); + qemu_vfree(buf); return ret; } =20 ret =3D bdrv_co_pwritev(bs->file, s->data_end * BDRV_SECTOR_SIZE, - nb_cow_bytes, &qiov, 0); - qemu_vfree(qemu_iovec_buf(&qiov)); + nb_cow_bytes, buf, 0); + qemu_vfree(buf); if (ret < 0) { return ret; } --=20 2.20.1