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[Qemu-devel] [PATCH 5/9] block/parallels: use buffer-based io
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[Qemu-devel] [PATCH 5/9] block/parallels: use buffer-based io |
Date: |
Mon, 22 Apr 2019 17:58:34 +0300 |
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---
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 = to_allocate * s->tracks;
int64_t nb_cow_bytes = nb_cow_sectors << BDRV_SECTOR_BITS;
- QEMUIOVector qiov =
- QEMU_IOVEC_INIT_BUF(qiov, qemu_blockalign(bs, nb_cow_bytes),
- nb_cow_bytes);
+ void *buf = qemu_blockalign(bs, nb_cow_bytes);
- ret = bdrv_co_preadv(bs->backing, idx * s->tracks * BDRV_SECTOR_SIZE,
- nb_cow_bytes, &qiov, 0);
+ ret = bdrv_co_pread(bs->backing, idx * s->tracks * BDRV_SECTOR_SIZE,
+ nb_cow_bytes, buf, 0);
if (ret < 0) {
- qemu_vfree(qemu_iovec_buf(&qiov));
+ qemu_vfree(buf);
return ret;
}
ret = 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;
}
--
2.18.0
- [Qemu-devel] [PATCH 0/9] block: buffer-based io, Vladimir Sementsov-Ogievskiy, 2019/04/22
- [Qemu-devel] [PATCH 2/9] block/qcow2: use buffer-based io, Vladimir Sementsov-Ogievskiy, 2019/04/22
- [Qemu-devel] [PATCH 3/9] block/qcow: use buffer-based io, Vladimir Sementsov-Ogievskiy, 2019/04/22
- [Qemu-devel] [PATCH 5/9] block/parallels: use buffer-based io,
Vladimir Sementsov-Ogievskiy <=
- [Qemu-devel] [PATCH 6/9] block/backup: use buffer-based io, Vladimir Sementsov-Ogievskiy, 2019/04/22
- [Qemu-devel] [PATCH 8/9] block/stream: use buffer-based io, Vladimir Sementsov-Ogievskiy, 2019/04/22
- [Qemu-devel] [PATCH 1/9] block: introduce byte-based io helpers, Vladimir Sementsov-Ogievskiy, 2019/04/22
- [Qemu-devel] [PATCH 7/9] block/commit: use buffer-based io, Vladimir Sementsov-Ogievskiy, 2019/04/22
- [Qemu-devel] [PATCH 9/9] qemu-img: use buffer-based io, Vladimir Sementsov-Ogievskiy, 2019/04/22
- [Qemu-devel] [PATCH 4/9] block/qed: use buffer-based io, Vladimir Sementsov-Ogievskiy, 2019/04/22
- Re: [Qemu-devel] [PATCH 0/9] block: buffer-based io, Stefan Hajnoczi, 2019/04/23
- Re: [Qemu-devel] [PATCH 0/9] block: buffer-based io, Stefano Garzarella, 2019/04/30