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[Qemu-devel] [PATCH v4 07/17] block/parallels: use QEMU_IOVEC_INIT_BUF
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[Qemu-devel] [PATCH v4 07/17] block/parallels: use QEMU_IOVEC_INIT_BUF |
Date: |
Mon, 18 Feb 2019 17:09:16 +0300 |
Use new QEMU_IOVEC_INIT_BUF() instead of
qemu_iovec_init_external( ... , 1), which simplifies the code.
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Reviewed-by: Stefan Hajnoczi <address@hidden>
---
block/parallels.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/block/parallels.c b/block/parallels.c
index cc9445879d..15bc97b759 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -220,23 +220,20 @@ static int64_t allocate_clusters(BlockDriverState *bs,
int64_t sector_num,
if (bs->backing) {
int64_t nb_cow_sectors = to_allocate * s->tracks;
int64_t nb_cow_bytes = nb_cow_sectors << BDRV_SECTOR_BITS;
- QEMUIOVector qiov;
- struct iovec iov = {
- .iov_len = nb_cow_bytes,
- .iov_base = qemu_blockalign(bs, nb_cow_bytes)
- };
- qemu_iovec_init_external(&qiov, &iov, 1);
+ QEMUIOVector qiov =
+ QEMU_IOVEC_INIT_BUF(qiov, qemu_blockalign(bs, nb_cow_bytes),
+ nb_cow_bytes);
ret = bdrv_co_preadv(bs->backing, idx * s->tracks * BDRV_SECTOR_SIZE,
nb_cow_bytes, &qiov, 0);
if (ret < 0) {
- qemu_vfree(iov.iov_base);
+ qemu_vfree(qemu_iovec_buf(&qiov));
return ret;
}
ret = bdrv_co_pwritev(bs->file, s->data_end * BDRV_SECTOR_SIZE,
nb_cow_bytes, &qiov, 0);
- qemu_vfree(iov.iov_base);
+ qemu_vfree(qemu_iovec_buf(&qiov));
if (ret < 0) {
return ret;
}
--
2.18.0
- [Qemu-devel] [PATCH v4 00/17] block: local qiov helper, Vladimir Sementsov-Ogievskiy, 2019/02/18
- [Qemu-devel] [PATCH v4 07/17] block/parallels: use QEMU_IOVEC_INIT_BUF,
Vladimir Sementsov-Ogievskiy <=
- [Qemu-devel] [PATCH v4 16/17] hw/ide: drop iov field from IDEBufferedRequest, Vladimir Sementsov-Ogievskiy, 2019/02/18
- [Qemu-devel] [PATCH v4 04/17] block/backup: use qemu_iovec_init_buf, Vladimir Sementsov-Ogievskiy, 2019/02/18
- [Qemu-devel] [PATCH v4 08/17] block/qcow: use qemu_iovec_init_buf, Vladimir Sementsov-Ogievskiy, 2019/02/18
- [Qemu-devel] [PATCH v4 17/17] hw/ide: drop iov field from IDEDMA, Vladimir Sementsov-Ogievskiy, 2019/02/18
- [Qemu-devel] [PATCH v4 15/17] hw/ide: drop iov field from IDEState, Vladimir Sementsov-Ogievskiy, 2019/02/18
- [Qemu-devel] [PATCH v4 03/17] block/block-backend: use QEMU_IOVEC_INIT_BUF, Vladimir Sementsov-Ogievskiy, 2019/02/18
- [Qemu-devel] [PATCH v4 09/17] block/qcow2: use qemu_iovec_init_buf, Vladimir Sementsov-Ogievskiy, 2019/02/18
- [Qemu-devel] [PATCH v4 02/17] block/io: use qemu_iovec_init_buf, Vladimir Sementsov-Ogievskiy, 2019/02/18
- [Qemu-devel] [PATCH v4 12/17] qemu-img: use qemu_iovec_init_buf, Vladimir Sementsov-Ogievskiy, 2019/02/18
- [Qemu-devel] [PATCH v4 01/17] block: enhance QEMUIOVector structure, Vladimir Sementsov-Ogievskiy, 2019/02/18