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[Qemu-devel] [PATCH 2/9] block/qcow2: use buffer-based io
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[Qemu-devel] [PATCH 2/9] block/qcow2: use buffer-based io |
Date: |
Mon, 22 Apr 2019 17:58:31 +0300 |
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---
block/qcow2.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 3ace3b2209..c3b2ea294d 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -4088,7 +4088,6 @@ qcow2_co_pwritev_compressed(BlockDriverState *bs,
uint64_t offset,
uint64_t bytes, QEMUIOVector *qiov)
{
BDRVQcow2State *s = bs->opaque;
- QEMUIOVector hd_qiov;
int ret;
size_t out_len;
uint8_t *buf, *out_buf;
@@ -4155,10 +4154,8 @@ qcow2_co_pwritev_compressed(BlockDriverState *bs,
uint64_t offset,
goto fail;
}
- qemu_iovec_init_buf(&hd_qiov, out_buf, out_len);
-
BLKDBG_EVENT(s->data_file, BLKDBG_WRITE_COMPRESSED);
- ret = bdrv_co_pwritev(s->data_file, cluster_offset, out_len, &hd_qiov, 0);
+ ret = bdrv_co_pwrite(s->data_file, cluster_offset, out_len, out_buf, 0);
if (ret < 0) {
goto fail;
}
@@ -4181,7 +4178,6 @@ qcow2_co_preadv_compressed(BlockDriverState *bs,
int ret = 0, csize, nb_csectors;
uint64_t coffset;
uint8_t *buf, *out_buf;
- QEMUIOVector local_qiov;
int offset_in_cluster = offset_into_cluster(s, offset);
coffset = file_cluster_offset & s->cluster_offset_mask;
@@ -4192,12 +4188,11 @@ qcow2_co_preadv_compressed(BlockDriverState *bs,
if (!buf) {
return -ENOMEM;
}
- qemu_iovec_init_buf(&local_qiov, buf, csize);
out_buf = qemu_blockalign(bs, s->cluster_size);
BLKDBG_EVENT(bs->file, BLKDBG_READ_COMPRESSED);
- ret = bdrv_co_preadv(bs->file, coffset, csize, &local_qiov, 0);
+ ret = bdrv_co_pread(bs->file, coffset, csize, buf, 0);
if (ret < 0) {
goto fail;
}
--
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 <=
- [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, 2019/04/22
- [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