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Diffstat (limited to 'block-qcow2.c')
-rw-r--r--block-qcow2.c29
1 files changed, 21 insertions, 8 deletions
diff --git a/block-qcow2.c b/block-qcow2.c
index 6eba524a2b..dd28c28e5f 100644
--- a/block-qcow2.c
+++ b/block-qcow2.c
@@ -1270,6 +1270,8 @@ typedef struct QCowAIOCB {
uint64_t cluster_offset;
uint8_t *cluster_data;
BlockDriverAIOCB *hd_aiocb;
+ struct iovec hd_iov;
+ QEMUIOVector hd_qiov;
QEMUBH *bh;
QCowL2Meta l2meta;
} QCowAIOCB;
@@ -1347,8 +1349,12 @@ fail:
n1 = backing_read1(bs->backing_hd, acb->sector_num,
acb->buf, acb->n);
if (n1 > 0) {
- acb->hd_aiocb = bdrv_aio_read(bs->backing_hd, acb->sector_num,
- acb->buf, acb->n, qcow_aio_read_cb, acb);
+ acb->hd_iov.iov_base = acb->buf;
+ acb->hd_iov.iov_len = acb->n * 512;
+ qemu_iovec_init_external(&acb->hd_qiov, &acb->hd_iov, 1);
+ acb->hd_aiocb = bdrv_aio_readv(bs->backing_hd, acb->sector_num,
+ &acb->hd_qiov, acb->n,
+ qcow_aio_read_cb, acb);
if (acb->hd_aiocb == NULL)
goto fail;
} else {
@@ -1377,9 +1383,13 @@ fail:
ret = -EIO;
goto fail;
}
- acb->hd_aiocb = bdrv_aio_read(s->hd,
+
+ acb->hd_iov.iov_base = acb->buf;
+ acb->hd_iov.iov_len = acb->n * 512;
+ qemu_iovec_init_external(&acb->hd_qiov, &acb->hd_iov, 1);
+ acb->hd_aiocb = bdrv_aio_readv(s->hd,
(acb->cluster_offset >> 9) + index_in_cluster,
- acb->buf, acb->n, qcow_aio_read_cb, acb);
+ &acb->hd_qiov, acb->n, qcow_aio_read_cb, acb);
if (acb->hd_aiocb == NULL)
goto fail;
}
@@ -1476,10 +1486,13 @@ static void qcow_aio_write_cb(void *opaque, int ret)
} else {
src_buf = acb->buf;
}
- acb->hd_aiocb = bdrv_aio_write(s->hd,
- (acb->cluster_offset >> 9) + index_in_cluster,
- src_buf, acb->n,
- qcow_aio_write_cb, acb);
+ acb->hd_iov.iov_base = (void *)src_buf;
+ acb->hd_iov.iov_len = acb->n * 512;
+ qemu_iovec_init_external(&acb->hd_qiov, &acb->hd_iov, 1);
+ acb->hd_aiocb = bdrv_aio_writev(s->hd,
+ (acb->cluster_offset >> 9) + index_in_cluster,
+ &acb->hd_qiov, acb->n,
+ qcow_aio_write_cb, acb);
if (acb->hd_aiocb == NULL)
goto fail;
}